additionally, some scientists speculate that our universe is not the only universe that exists, but the only one we can gather evidence about. this idea is called

Answers

Answer 1

Moreover, some scientists speculate that our universe is not the only universe that exists, but the only one from which evidence can be collected. This idea is called the big bang theory.

At the big bang, astronomers explain the beginning of the universe. The idea is the universe started as a single point, expanded to its current size, was stretched, and is still expanding. According to the Big Bang theory, the observable expansion of the universe began with the explosion of a single particle at a specific point in time. Georges Lemaître (1894–1966), was a Belgian cosmologist, Catholic priest, and father of the Big Bang theory.

Learn more about the big bang theory in

https://brainly.com/question/1933033

#SPJ4


Related Questions

How do you find the kinetic energy of a ball?

Answers

The kinetic energy of a ball can be found by the formula KE = ½ mv². We assume that the ball is moving.

What is kinetic energy?

Kinetic energy is the energy of an object due to its motion. So, if an object is moving, it has kinetic energy.

The energy is equal to half mass of an object multiplied by the square of its velocity. The statement can be expressed as

KE = ½ mv²

Where

KE = kinetic energy (J)m = mass of object (kg)v = velocity of object (m/s)

Find the kinetic energy of a ball!

A ball has a mass of m and a velocity of v.

The kinetic energy can be found by the formula above.

KE = ½ mv²

Hence, the kinetic energy of a ball can be calculated by KE = ½ mv².

Learn more about kinetic energy of the rock here:

brainly.com/question/21288807

#SPJ4

PLS HELP ASAP
Two lamps carrying the same current intensity, the first is double the resistance of the second, so the ratio between the power consumed in the first to the second is...
a.4:1
b.1:2
c.2:1
d.1:1

Answers

Answer: It is C I guess.

the answer too ur question is b

How long will it take a roller roaster car to go from rest to 23 m/s if the car accelerates at a rate of 12 m/s²?
Hint: items that fall in air a =

Answers

Acceleration = (Final Speed - Initial Speed) / t

12 = (23- 0) / t
12t = 23
t = 1.916666667
t = 1.92s (3s.f.)

what is the period of this oscillation? what is the period of this oscillation? 12 s 24 s 36 s 48 s 50 s

Answers

According to question, the correct matching of oscillations is A - B, B-C, C -B, D-B and E-B .

T = 2 Square root of L/g, where L is the pendulum's length and g is the acceleration brought on by gravity, is the formula for a pendulum's period.

The time it takes a body to make one complete to and from movement is the period of oscillation for that body. (ii) The acceleration of free fall caused by gravity is the rate at which a body's velocity increases over time as a result of the earth's gravitational pull when it is falling under its own weight (alone).

To know more about  oscillations visit :

https://brainly.com/question/30111348

#SPJ4

The correct question is :

Figure Q14.24 represents the motion of a mass on a string. A What is the period of the oscillations?

A 12 S

B 24 S

C 36 S

D 48 S

E 50S

B What is the amplitude of the oscillation?

a 1.0 cm

b 2.5 cm

c. 4.5 cm

D 5.0 cm

E 9.0 Cm

two cars are initially (2.50 c) km apart on a straight road. if the cars are moving toward each other, car 1 with a speed of (7.50 a) m/s and car 2 with a speed of (5.40 b) m/s, how many seconds will it take before the cars meet? round your answer to three significant figures.

Answers

The time by which the two cars initially 2.50km apart and moving towards each other meet is 194 seconds.

The two cars are initially 2.50km apart. So the distance between the two cars,d= 2.50km. The speed of car 1 is v₁=7.50 m/sec. The speed of car 2 is v₂=5.40 m/sec. Let t be the time at which the two cars meet. Then at time t, the distance traveled by the two cars will be equal to the distance between them initially.

So, the distance d₁ traveled by car1 is 7.50×t m. The distance d₂ traveled by car 2 is 5.40×t m. Now d₁+d₂=2500, 7.5×t+5.4×t=2500, 12.9×t=2500, t= 2500/12.9, t=193.8 secs. So the time by which the two cars meet is 194 secs.

For further learning about speed, follow the link:

https://brainly.com/question/8576610

#SPJ4

What is the connection between global warming and climate change ?

Answers

Global warming refers to the warming of the earth due to holes in the ozone layer. The ozone layer protects the earth from harmful ultraviolet rays emitted by the sun. This phenomenon causes our planet to warm and this concept is called global warming leading to climate change.

Global warming refers to an increase in the temperature of the earth, mainly due to an increase in the concentration of greenhouse gases in the atmosphere. “Climate change” refers to gradual changes in climate policy over time, including precipitation, temperature, and wind patterns. The burning of fossil fuels, deforestation, and livestock farming are increasingly impacting the planet's climate and temperatures. This adds enormous amounts of greenhouse gases to those naturally present in the atmosphere, increasing the greenhouse effect and global warming.

Learn more about global warming in

https://brainly.com/question/29625243

#SPJ4

7. How much potential energy is contained in a 52 kg skier at the top of a 150 m ski
slope?

Answers

The potential energy that is contained in a 52 kg skier at the top of a 150 m slope is 76,440J.

How to calculate potential energy?

Potential energy is the energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).

The potential energy of an object can be calculated by using the following formula:

P.E. = mgh

Where;

m = mass of object (kg)g = acceleration due to gravity (m/s²)h = height (m)

P.E = 52 × 9.81 × 150

P.E = 76,440J

Therefore, 76,440J is the potential energy of the skier.

Learn more about potential energy at: https://brainly.com/question/24284560

#SPJ1

A force that resists motion of two surfaces that are touching is known as?

Answers

A force that resists motion of two surfaces that are touching is known as friction.

What resisting force exists between two surfaces?

when attempting to slide an object across two surfaces, there is resistance. When "rough edges" interact at the molecular level, friction results: Every time there is friction, the direction of motion is reversed.

The force that opposes motion when the surface of one object rubs against the surface of another is known as friction.

opposing forces These comprise: Friction is a force that tries to stop two surfaces from slipping or sliding when they are in contact. The motion is countered by air resistance, which acts.

To know more about friction visit:

https://brainly.com/question/13000653

#SPJ4

The speed of a moving bullet can be determined by allowing the bullet to pass through two rotating paper disks mounted a distance 92 cm apart on the same axle. From the angular displacement 23.2 ◦ of the two bullet holes in the disks and the rotational speed 971 rev/min of the disks, we can determine the speed of the bullet.

Answers

The the speed of the bullet as per the given information will be 235.8 m/s.

What is angular displacement?

"The angle in radians (degrees, revolutions) through which a point or line has been rotated in a particular sense about a specified axis" is the definition of angular displacement. It is the angle at which a body moves in a circular motion.

First use the angular displacement to find the time.

Δθ = ω t

23.2 x 1/360 = 971 rev/min x 1/60 x t

0.064 = 16.18 x t

t = 0.0039s

Now use the distance to find the speed.

v = Δx / t

v = 0.92/0.0039

v = 235.8 m/s

Thus, the speed is 235.8 m/s.

For more details regarding angular displacement, visit:

https://brainly.com/question/26483834

#SPJ1

What are some benefits of genetic engineering What are some concerns?

Answers

The benefit of genetic engineering is to assist in meeting the needs of human life, including providing future food needs with better quality.

The concern that arises as a result of genetic engineering is that the balance of the ecosystem can be disrupted due to the domination of GMOs over natural species as well as health problems due to the use of genetic engineering products, for example, proven allergic reactions.

What is genetic engineering?

Genetic engineering is an attempt to modify the genetic molecules of an organism so that new properties are obtained.

The application of genetic engineering is very helpful in meeting the needs of human life, including providing future food needs with better quality. In addition, genetically modified plants are usually more resistant to pests and can increase crop yields.

But genetic engineering also has a negative impact, namely research has proven that some food products contain artificial genetic material which will create adverse effects on human health and health problems due to the use of genetic engineering products, namely allergic reactions that have been proven.

Learn more about crop profits through genetic engineering here :

https://brainly.com/question/29764651

#SPJ4

a subatomic particle found in the nucleus of every atom, this particle has a positive electrical charge

Answers

A subatomic particle found in the nucleus of every atom and the particle has a positive electrical charge : proton.

What is meant by proton?

Proton is a subatomic particle found in the nucleus of every atom and the particle has positive electrical charge, equal and opposite to that of electron. If isolated, then a single proton would have mass of only 1.673 * 10^-27 kilogram, just slightly less than mass of a neutron.

A proton is a stable subatomic particle, with symbol p , H⁺, or ¹H⁺ with positive electric charge of +1 e elementary charge. It's mass is slightly less than that of neutron and 1,836 times the mass of electron.

To know more about proton, refer

https://brainly.com/question/28023882

#SPJ4

The reason for quick hotness of sand more than the bank side water in a river is:
(A) Specific heat of water is more than sand
(B) Specific heat of water is less than sand
(C) Specific heat of water is equal than sand
(D) Due to local conditions

Answers

Because water has a higher specific heat capacity than sand, it takes longer to heat up. Because sand has a low specific heat capacity, it heats up quickly during the day.

What is specific heat?

The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius. The specific heat capacity of a material is defined as the amount of heat (J) absorbed per unit mass (kg) when its temperature rises 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C). Heat capacity, also known as specific heat, is the amount of heat required per unit mass to raise the temperature by one degree Celsius. Specific heat is useful in determining processing temperatures and the amount of heat required for processing, as well as in distinguishing between two polymeric composites.

Here,

Water takes longer to heat up than sand because it has a higher specific heat capacity. Sand heats up quickly during the day due to its low specific heat capacity.

To know more about specific heat,

https://brainly.com/question/28852989

#SPJ4

In a physics lab experiment, a spring clamped to the table shoots a 19 g ball horizontally. When the spring is compressed 20 cm, the ball travels horizontally 5.2 m and lands on the floor 1.6 m below the point at which it left the spring. What is the spring constant?

Answers

A spring attached to a table clamp launches a 19 g ball horizontally. The spring's spring constant is [tex]$k=m v^2 / x^2$[/tex] when it is crushed by 20 cm.

What do you meant by spring constant ?

The issue consists of two elements. The ball changes from having spring energy to having kinetic energy in the first part. We have a horizontal launch issue in the second section, with the usual variables of v, h, R, and tair. If you are familiar with two thirds of v, R, or h for horizontal launches, you can calculate the third. The following two equations of motion in y and x are used to achieve this, solving for ta is the standard method:

[tex]$\mathrm{x}=\mathrm{vt} \quad$ (constant velocity $-$ true for any $\mathrm{t}$ )$y=1 / 2 \mathrm{gt}^2$ (constant $\mathrm{a}=\mathrm{g}$ true for any $\left.\mathrm{t}\right)$[/tex]and locate the final unknown (in this instance, given R and h, locate v and ta). Now that the energy balance is set up:[tex]$1 / 2 \mathrm{kx}^2=1 / 2 \mathrm{mv}^2$[/tex]

Solving for k using [tex]$E_{\text {spr,initial }}=E_{K, \text { final }}$[/tex] or [tex]$1 / 2 \mathrm{kx}^2=1 / 2 \mathrm{mv}^2$[/tex] ,final [tex]$k=m v^2 / x^2$[/tex]

To learn more about spring constant refer to :

https://brainly.com/question/23885190

#SPJ1

This table displays information about position and time. What was the average speed of the baseball from the time it left the pitcher's hand to the time it was 7. 2 m from the pitcher's hand?.

Answers

The average speed of the baseball from the time it left the pitcher’s hand to the time it was 7.2 m from the pitcher’s hand is 25.7 m/s.

Thus, the correct answer is option A.

What is average speed?

The object's average speed is the total distance it travels in a predetermined length of time. It has a scalar value. It is characterized by the magnitude and lacks direction. You may calculate it by dividing the total distance travelled by the total amount of time needed to go that distance.

The average speed of the baseball is calculated as:-

Distance = 7.2 m

Time = 0.28 sec

Using the formula,  Speed = distance/time

Speed = 7.2/0.28 = 25.7 m/s

Therefore, 25.7 m/s is the average speed of the baseball from the time it left the pitcher’s hand to the time it was 7.2 m from the pitcher’s hand.

To learn more about average speed, refer to:

brainly.com/question/12322912

#SPJ4

Complete question is as follows:

The time taken for the baseball to reach 7.2m from the pitchers hand is 0.28 seconds. This table displays information about position and time. What was the average speed of the baseball from the time it left the pitcher’s hand to the time it was 7.2 m from the pitcher’s hand? Formula for Speed S=d/t Speed= distance/time Question 4 options: 25.7 m/s 50.7 m/s 30.2 m/s 20.5 m/s

HELP ME ASPP PLEASE THANK YOU

Answers

Correct option is B, The reactants are 4Al + 3O₂.

Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

The things you start with before a reaction occurs are the reactants. Any chemicals on the left side of the arrow are reactants in a chemical equation.

Any new substance created during the reaction is considered one of the products. They are placed on the right side of the arrow in a chemical equation.

example: 2 H2 + O2 -> 2 H2O

We begin with hydrogen and oxygen (reactants) in this reaction, and we end up with water (product)

To learn more about reactants and products from given link

https://brainly.com/question/2608651

#SPJ1

ssuming a typical efficiency for energy use by the body, if a 67 kg person were to use the energy in this candy bar to climb stairs, how high could she go? express your answer in meters.

Answers

Based on the formula for work done, the height to which the 67 kg person can climb after eating the Candy bar is 3.07 m.

What is the energy in Joues present kin the Candy bar?

The energy in Joues present kin the Candy bar is determined by using the conversion factor of calories to Joules.

The conversion factor is: 1 calorie = 4.2 joules

480 calories = 4.2 * 480 joules

480 calories = 2016 Joules

Work done by the 67 kg person is calculated using the formula:

Work done or energy = mgh

where;

m is the mass in kg = 67 kg

g is the acceleration due to gravity = 9.81 m/s²

h is height = ?

Therefore, h = work done/mg

h = 2016 / (9.81 * 67)

h = 3.07 m

Learn more about work done at: https://brainly.com/question/28894116

#SPJ1

Complete question:

The label on a Candy bar says 480 Calories. Assuming a typical efficiency for energy use by the body, if a 67kg person were to use the energy in this candy bar to climb stairs, how high could she go?

at what time or times is the particle moving to the right at maximum speed? enter your answers as integers in ascending order separated by commas.

Answers

The particle moving to the right at maximum speed at 0 s, 4 s, 8 s

When a particle experiences a restoring force proportional to its displacement, it is said to be in simple harmonic motion (SHM), and as a result, the particle's acceleration is directly proportional to its displacement (although in the opposite direction):

α∝-x

Additionally, as illustrated in the figure for the particle in this case, the displacement of a particle in SHM can be characterized by a sinusoidal function.

The graphic shows that a function with the following formula describes the displacement of the particle in this issue.

x(t) = A sin ωt

where

A is the amplitude

ω =  2π/ T, where T is the period, ω is the angular frequency. The particle completes 1 oscillation in 4 seconds, as shown on the graph, therefore

T = 4 s

The angular frequency is hence

ω =  2π/ T

ω =  2π/ 4 =π/2 rad/s

thus,

x(t) = A sin ωt

x(t) = A sin π/2t

As the derivative of displacement can be used to determine a particle's velocity in SHM, the following results are obtained:

v(t) = x'(t)= Aωcos(ωt)= Aπ/2 cos (π/2t)

Consequently, the particle is traveling to the right at its fastest when

cos (π/2t) =+1

(because this is the cosine part's highest possible positive value.) Trying to find t,

(π/2t) =0

t = 0s

There is yet another instance of this when

(π/2t) =2π

t= 4 s

also

(π/2t) =4π

t = 8 s

Therefore, at 2 and 6 seconds, the particle is travelling to the right at its fastest.

Your question is incomplete but most probably your full question attached below

Learn more about position vs time graph at https://brainly.com/question/15545754

#SPJ4

a rubber balloon is blown up and the end tied. is the pressure inside the balloon greater than, less than, or equal to the ambient atmospheric pressure?

Answers

The pressure inside the rubber balloon is greater than the ambient atmospheric pressure.

The pressure inside the rubber balloon is greater than the ambient atmospheric pressure because when the balloon is blown up, the person blowing the balloon is compressing the air inside the balloon. According to gas laws, when a gas is compressed, the pressure inside the container increases. When the end of the balloon is tied, this compressed air is confined within the balloon, which causes the balloon to expand.

When air is compressed, the particles of the air molecules move closer together and collide more frequently. This increases the force of the collisions and creates an increase in pressure. This is why the pressure inside the rubber balloon is greater than the ambient atmospheric pressure.

In summary, when the rubber balloon is blown up, the air inside the balloon is compressed and the pressure inside the balloon is greater than the surrounding ambient atmospheric pressure.

Learn more about the concept of pressure and how it relates to a rubber balloon here:https://brainly.com/question/14980888

#SPJ4

if a scuba diver descends by 1 m and fails to equalize, what is pressure difference on the two sides of an eardrum?

Answers

A scuba diver descending by 1 meter and fails to equalize, then the pressure difference on the two sides of an eardrum would be approximately 1 atmosphere (ATA).

A scuba diver who descends 1 meter without equalizing will experience a pressure difference of about 1 atmosphere (ATA) on the two sides of their eardrum. This can cause pain and damage to the eardrum if not addressed.

Divers must properly equalize the pressure in their ears and sinuses as they descend to prevent injury. It is important to note that as the diver goes deeper the pressure increases, so the deeper the diver goes, the more important it becomes to equalize properly. If the diver has a difficulty equalizing it's important to ascend and address the problem before continuing the dive.

To learn more about equalizing visit: https://brainly.com/question/7181128

#SPJ4

In 11.1d, what would the velocity be 15 s after the start if the acceleration were maintained?
What is the velocity of an object accelerating at 5.0 m/s² after 15 s having started from
rest?

Answers

Answer:In physics, the velocity of an object under constant acceleration can be calculated using the following formula:

v = vₒ + at

where vₒ is the initial velocity (assumed to be zero if the object is starting from rest), a is the acceleration, and t is the time elapsed.

If the acceleration were maintained:

v = vₒ + at

v = 0 + (5 m/s²) * (15 s) = 75 m/s

So, the velocity would be 75 m/s after 15 seconds if the acceleration were maintained.

If the object is starting from rest:

v = vₒ + at

v = 0 + (5 m/s²) * (15 s) = 75 m/s

So, the velocity of an object accelerating at 5.0 m/s² after 15 s, having started from rest, would be 75 m/s.

Explanation:

Physical science pls help I am struggling

Answers

The resistance is 14×10⁵ ±5%

How to calculate the resistance of a resistor using colour code?Hold the resistor with the gold or silver band to the right and read the color codes from the left to the right. Select the color codes from the bands on the resistor. Read the colors from left to right. The resistance value based on the color code provided is now displayed.If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω. So, colour bands are printed on them to represent the electrical resistance. These colour bands are known as resistor colour codes. The resistor colour code was invented in the 1920s by the Radio Manufacturers Association (RMA). All leaded resistors with a power rating up to one watt are marked with colour bands

To learn more about resistance of a resistor refers to:

brainly.com/question/2500996

#SPJ1

Suppose a scrawny 20. Kg Wyle was shot straight up with an initial velocity of +50 m/s.   
a.     Assuming that all his initial Ek was transformed into Eg, what is the maximum height he could reach?

b.     Suppose that 20% of his initial Ek were lost due to friction with the air (air resistance).  
What is the maximum height he could reach?

Answers

(a) If all of his initial velocity were converted into an equation, his highest point would be at a height of y = 127.6 m.

The tallest he could get was (b) h = 102.08m.

What is the straightforward meaning of velocity?

The dislocation that an element or particle experiences with the passage of time is expressed vectorially as velocity. The centimeter per second (m/s) is the accepted unit of velocity profiles (also known as speed).

What is the SI unit for velocity?

The velocity is the rate at which a given displacement changes. By figuring out the displaced to total time ratio, it may be estimated. The same as for speed, "m/s" is the SI unit for velocity.

V = 50 m/s

a = - 9.8m/s²

y = ?

0 = 50² + (-9.8)y

y = 127.6 m

= 127.6 * .2

= 25.52 m

= 127.6 - 25.52m

h = 102.08m

To know more about velocity visit:

https://brainly.com/question/28395671

#SPJ1

Can anyone help me solve this question?
7. A student throws a water balloon vertically downwards from the top of a building. The balloon leaves the thrower’s hand at a speed of 6.0 m/s. air resistance may be ignored, so the water balloon is in free fall after it leaves the thrower’s hand. (a) what is its speed after falling for 2.0 s (b) how far does it fall in 2.0 s? (c) what is the magnitude of its velocity after falling 10.0 m?

Answers

The velocity of the body is 16.1 m/s.

What is Velocity?

The rate of motion and direction of an object are measured by a vector known as velocity. Therefore, we need to understand both the magnitude and direction in order to calculate the velocity according to this definition.

For instance, if an object moves at 5 meters per second (m/s) in the direction of the west, its velocity in that direction will be 5 m/s. The most popular and straightforward method for calculating velocity is given in the formula below.

While m/s (meter per second) is the SI unit for velocity, it can also be expressed in any d/t unit (distance per time). Miles per hour (mph), kilometres per second (km/s), and kilometers per hour are a few of the units that can be used to express velocity (kph).

Therefore, The velocity of the body is 16.1 m/s.

To learn more about Velocity, refer to the link:

https://brainly.com/question/18084516

#SPJ1

What important safety precaution should be taken when using a melting point apparatus?

Answers

By contrasting a substance's melting point with the melting points of other known chemicals, melting point determination can be used to identify a substance.

The temperature at which a substance transitions from a solid to a liquid form is known as the melting point of that substance. A pure substance has a sharp melting point and melts at a specific temperature, whereas an impure substance has a lower melting point and melts over a wider temperature range.

Precautions to be taken while using a melting point apparatus are -

1. To find the melting point of a sample, use a dry, powdered sample.

2. Maintain a level distance between the thermometer and the lower end of the capillary tube.

3. There shouldn't be any significant air spaces between the solid particles and the powder during packing.

4. To keep a constant temperature, the bath should be gradually heated and stirred often.

5. Neither the bottom of the beaker nor the sides of the thermometer's bulb or the capillary attached to it should contact.

6. When connecting the capillary tube to the thermometer, avoid using rubber bands.

To know more about melting point from the link

brainly.com/question/40140

#SPJ4

Describe how another permanent magnet can be used to identify the blocks

Answers

When the poles are brought in close proximity to a suspended magnet in turn, a permanent magnet repels one of the poles.

Explain what a permanent magnet is.

Materials known as permanent magnets are those whose interior structure itself produces the magnetic field. Both the atom's nucleus and its electrons are found inside of atoms and crystals.

A magnet made of an unmagnetized substance would be drawn to both poles. Magnets can push or pull objects without coming into contact with them because magnetism can operate at a distance. On other magnets or magnetic materials, a permanent magnet always exerts a force. The primary characteristics of a permanent magnet are that it generates its own magnetic field. The magnetic field is always present; it cannot be turned on or off.

To learn more about magnetic field use link below:

https://brainly.com/question/14411049

#SPJ1

a metal conducting sphere of radius r holds a total charge q. what is the surface charge density, , on the outer surface of the conducting sphere?

Answers

The surface charge density of the metal conducting sphere on the outside is zero.

Conductive hollow spheres are positively charged with a +q Coulomb charge. If a sphere has the same density across its surface, the +q charge will be evenly distributed across the surface. So the whole system is a symmetrical system. Charge density depends on the amount of charge and the surface area of ​​the conductor or the size of the conductor. A conductor with an uneven surface has different surface areas at different locations on its surface. As a result, the surface charge density varies from point to point on the surface. The magnitude of the surface charge density is higher in regions of maximum curvature.

Learn more about the surface charge density in

https://brainly.com/question/8966223

#SPJ4

         

you spin a bicycle wheel (diameter of 0.85 m, mass of 4.5 kg), applying a force of 24 n tangentially. what is the angular acceleration of the wheel?:

Answers

The angular acceleration of the wheel is 12.5 rad/s². The result is obtained by using the equation of tangential force.

What is tangential force?

Tangential force is the force acting on a body in the direction of the tangent to the curved path of the body. The equation of tangential force is

Ft = m × at

Where

Ft = tangential force (N)m = mass of object (kg)at = tangential acceleration (m/s²)

The tangential acceleration can be calculated by

at = rα

Where

r = radius or the circle (m)α = angular acceleration (rad/s²)

Suppose you spin a bicycle wheel. It has

Diameter, d = 0.85 mMass, m = 4.5 kgTangential force, Ft = 24 N

Find the angular acceleration!

The radius of the spin is

r = ½d

r = ½(0.85)

r = 0.425 m

The tangential acceleration is

Ft = m × at

24 = 4.5 × at

at = 24/4.5

at = 5.3 m/s²

The angular acceleration would be

at = rα

5.3 = 0.425α

α = 5.3/0.425

α = 12.5 rad/s²

Hence, the spinning bicycle wheel has the angular acceleration of 12.5 rad/s².

Learn more about tangential force here:

brainly.com/question/29221372

#SPJ4

What is the value of the slope of the graph?

Answers

Answer:

-3 lb/wk

Explanation:

Pick any 2 points on the graph.  I pick (0,180) and (10,150)

Slope = Δy/Δx = (150 - 180) / (10 - 0) = -3 lb/wk

This is the rate of weight loss

a 2 kg bowling ball travelling at 4 m/s hits a stone wall and stops. what is the impulse acting on the bowling ball? kg*m/s

Answers

The impulse acting on the bowling ball is - 6kg m/s

An object's impulse can be defined as the amount by which its momentum shifts as a direct result of a force being applied to it for a certain amount of time. To calculate impulse, we can use this following formula:

Impulse = Δp = p final – p initial

Where,

Δp = the change in momentum

Pfinal = the final momentum

Pinitial =the initial momentum

Hence, the impulse:

Δp = pf – pi

Δp = m x vf – m x vi

In this case, we are given that:

the mass of the bowling ball (m) = 2 kg

the velocity before it hits the stone (vi) = 4 m/s

the velocity after it hits the stone (vf) = 0 m/s (since the ball stopped)

So,

Δp = (2.0 kg) (0. m/s) – (2.0 kg) (4.0 m/s)

Δp = -6 kg m/s

To learn more about impulse, click here:

https://brainly.com/question/12059084

#SPJ4

A force of 6. 0 Newtons is applied to a block at rest on a horizontal frictionless surface over a 7. 0 meter span. How much energy is gained by the block?

Answers

42 Joules energy is gained by the block. This can be solved by using the concept work done formula.

What is work done?

The product of a force and the distance it is applied across is what is referred to as the work done. An item moves across space when a force is applied to it, which is referred to as doing work. By applying a force across a distance, such as when you lift a burden, you are performing labor.

A force delivered over a distance to an item causes work to be done. Thus, an object's total energy will be impacted when a force is applied to it across a distance.

Given that,

a force of 6.0 Newtons is applied to a block at rest on a horizontal friction less surface over a 7.0 meter span.

The parameters given are:

Distance covered = 7.0 m

The force = 6.0 N

The formula for work done is the product of force and distance. That is,

Work done = force × distance

Where work done is the same as energy.

So, Energy = force × distance

or, Energy = 6.0 N × 7.0 m

or, Energy = 42 Joules.

Therefore, the energy gained by the block is 42 Joules.

To know more about work refer to:

brainly.com/question/25573309

#SPJ4

Other Questions
Why is 7 a natural number? When looking through a microscope, which organelles would make it clear that you were looking at a plant cell? Hint: which ones are specific to plant cells :)__________________________________ and ________________________________________.When looking through a microscope, which organelles would make it clear that you were looking at an animal cell? Hint: Which ones are specific to animal cells :)____________________________________________________________________________________.Cells have _________________________________________ to help it perform specific functions. ______________________________________ is the organelle that converts energy to a useable form for the cell.This organelle resembles the circulatory system because it carries nutrients to other areas of the cell. What is it?____________________________________________________________________This organelle provides support to the cell in a plant cell. What is it?_______________________________________________________________________________If you were a scientist and wanted to learn more about the DNA of a plant or animal cell. Where would you look? Hint: Which organelle would it be within?________________________________________________________________________________ Which is the best definition of theme in a literary text? Why does Luke research what happened and write about Jesus life as well? cell size maximizes the ability of diffusion and motor proteins to transport nutrients and waste products.a. trueb. false how does the interview impact stars perception of the world chapter 5 the hate you give A large and increasing number of genetic tests are available to prospective parents and children. Even as these testing methods become more and more sophisticated, what is one thing technology will never solve? the ability to prescribe the correct course of action based on test results Rikki has the following capital gains and losses for the current year:Short term capital gain $1000long-term capital gain $9900long-term capital loss $1100collectible gain $7900collectible loss $2200What is the effect of capital gains and losses on Rikki's taxable income and her income tax liability?Assume that Riki is in the 33% marginal tax rate bracket Come on please help me ASAP!!! When Dan makes chocolate chip cookies at home, he typically mixes x ounces of chocolate chips into the batter. In his last batch, he decided to make the cookies extra delicious and used 30% more chocolate chips.Pick all the expressions that represent how many ounces of chocolate chips Dan used in his last batch.0.3x1.3xx+0.3xx+1.3x What message does this political cartoon convey?Eastern states had granted the right to vote to more women than Western states.Eastern states needed to follow the lead of Western states in the suffrage movement.The entire country had made amazing strides in the suffrage movement. The entire country had made little progress in granting women the right to vote. what principle or theory argues that it is in a countrys best interests to maintain a trade surplus? 3. Which is a true statement?1.Colons are used to join independent clauses separated by a conjunctive adverb.2.Colons are used to end salutations in formal business letters.3.Semicolons are used before a list following an independent clause.4.Semicolons are used to signal important ideas. What types of geologic features are created by convergent boundaries of continental and oceanic plates? what should you use with a laptop to avoid frequent insertion and removal of external input and video devices? Which is an example of a mental health that may be at risk?A. When you don't have time to get everything done in a dayB. When troubling thoughts come and go throughout the day.C. When strong emotions lead to problems getting through the day.D. When you feel sad occasionally. if you are looking at a star 100 light-years away, for how many years has the light that you're seeing been travelling? hanging on in quiet desperation is the english way who was a choreographer during the post-modern movement who strived to create works that were accessible and entertaining to viewers. Why did the United States intervene in the Indochina War? What is the distance between points (- 4 0 and 6 0?