(a) a space vehicle is launched vertically upward from the earth's surface with an initial speed of 7.11 km/s, which is less than the escape speed of 11.2 km/s. what maximum height does it attain?

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

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

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.

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

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.

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?

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

The tangential acceleration can be calculated by

at = rα

Where

Suppose you spin a bicycle wheel. It has

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

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

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

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

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:

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

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

The resistance is 14×10⁵ ±5%

To learn more about resistance of a resistor refers to:

brainly.com/question/2500996

#SPJ1

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

The velocity of the body is 16.1 m/s.

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

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.

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

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

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

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

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

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

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

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

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

Answer: It is C I guess.

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

(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.

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).

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

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.

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

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

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

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;

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

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.

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

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

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

"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