Answer:
The weight of the load can be calculated by using the principle of mechanical advantage of a lever. The mechanical advantage of a lever is the ratio of the force exerted on the load (F_L) to the force applied to the lever (F_A). In this case, the mechanical advantage of the lever is given by the ratio of the distance the load moves (0.2 m) to the distance the force is applied (1.2 m), or MA = 0.2/1.2 = 1/6.
So the force exerted on the load (F_L) is 6 times the force applied to the lever (F_A) and the weight of the load can be calculated as:
Weight of the load (F_L) = Mechanical advantage x Applied force (F_A)
F_L = (1/6) * 50 N = 8.33 N
So the weight of the load is 8.33 N.
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A bowling ball with a mass of 3 kg was thrown and accelerated at a rate of 8 m/s².
How much force was used to throw the ball?
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
By formula ;
" Force = Mass × Acceleration "
So, let's proceed ~
[tex]\qquad \sf \dashrightarrow \: f = m \times a[/tex]
[tex]\qquad \sf \dashrightarrow \: f = 3 \times 8[/tex]
[tex]\qquad \sf \dashrightarrow \: f = 24 \: \: N[/tex]
Therefore, the force required to throw that ball provided the given conditions will be 24 Newtons ~
Why will that movement result in the largest increase in potential energy?
Answer:
because it hold the energy
Explanation:
potential energy hold the energy
A 68 kg hiker walks at 5. 0 km/h up a 9 % slope. The indicated incline is the ratio of the vertical distance and the horizontal distance expressed as percentage.
The required metabolic power is (P) Power = 59.73 N * 1.39 m/s = 82.96 Watts and the Metabolic Power = 82.96 W / 0.25 = 331.83 watts.
As we know that the slope is equal to
tan θ = 0.09
θ = 5.14˚
Force = 68 kg × sin(5.14˚) * 9.8 m/s^2 Force = 666.4 * sin (5.14) = 59.73 N
During sprinting, the runner’s body leans forward forming an angle with the terrain, which is smaller the greater the acceleration. If the terrain is tilted upward to bring the runner’s body vertical accelerated running can be considered equivalent to running at a constant speed up an ‘‘equivalent slope’’ (ES).
In addition, the average force exerted by the active muscles during sprinting is greater than the subject’s body weight by the ratio, This ratio is called ‘‘equivalent mass’’ (EM).
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on the fahrenheit scale, how many degrees are there between the freezing and boiling point of water?
On a Fahrenheit Scale, which is a relative scale unlike Kelvin scale, there are 180 degrees between the freezing and boiling points of water.
There are majorly three scales of temperature generally used for calculations and measurements, which are Celsius, Fahrenheit and Kelvin, which also is the S.I. unit of Temperature.
Fahrenheit and Celsius are relative scales while the Kelvin is an absolute scale.
On the Celsius Scale, there are (100 - 0) = 100 degrees between the freezing and boiling points.
On the Fahrenheit Scale, there are (212 - 32) = 180 degrees between the freezing and boiling points.
Here are some conversions used while calculations in temperature:
0° C = 273.15 K°C = (°F - 32) × 5/9K = (F − 32) × 5 ⁄ 9 + 273.15Learn more about Fahrenheit Scale here:
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A tsunami is a wave caused when a landslide falls into the sea, or when there is an earthquake on the sea bed. A tsunami off the coast of Japan can travel 8600 km to the coast of California in 17 hours.
A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor.
What is tsunami?Once a tsunami forms, its speed depends on the depth of the ocean. In the deep ocean, a tsunami can move as fast as a jet plane, over 500 mph, and its wavelength, the distance from crest to crest, may be hundreds of miles. Mariners at sea will not normally notice a tsunami as it passes beneath them; in deep water, the top of the wave rarely reaches more than three feet higher than the ocean swell. NOAA Deep-ocean Assessment and Reporting of Tsunami (DART) systems, located in the deep ocean, are able to detect small changes in sea-level height and transmit this information to tsunami warning centers.To learn more about wavelength refer to:
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The driver of a car traveling at 38.7 m/s applies the brakes and undergoes a constant
deceleration of 2.41 m/s. How many revolutions does each tire make
before the car comes to a stop, assuming that
the car does not skid and the tires have
radii of 0.18 m?
Answer in units of rev.
Each tire makes 274.9 revolutions before the car comes to a stop.
How to calculate?We will calculate the distance covered for by the car after the brakes are applied. We will apply the following equation of motion:
V^2=U² +2as where V is the final velocity, U is the initial velocity, a is the acceleration and s is the distance covered during that acceleration.
0=(38.7)² -2* 2.41 *S (This negative because it is decelerating).
0 = 1497.69 - 4.82* S
S = 310.72
Circumference of the tire = 2πr where r is the radius.
Circumference = 1.13
Distance / circumference = Number of revolutions.
Number of revolutions. =310.72 / 1.13
Number of revolutions = 274.9
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HELP ASAP
Which of the following are properties of an object in projectile motion? Select -
all that are true.
The only acceleration is gravity
The object is in freefall
The trajectory (path) is a parabola
Answer:
The only acceleration is gravity
The object is in freefall
The trajectory (path) is a parabola
are all true
Explanation:
the only thing affecting the object is gravity so it is in free fall.
since the ball is in the air no other forces are affecting it other than gravity so the only acceleration is gravity
objects in the air tend to curve up because of the force that the hand exerts on the ball and then down because of gravity and hit the floor, forming a parabola
therefor all are true
The average mass of a rhinoceros calf is 45 kg. What is its weight in newtons? Round your answer to the nearest whole number.
A. 5N
B. 45N
C.250 N
D. 441 N
Weight = Mass * Acceleration due to gravity
Fw = m • g
g = 9.81 m/s²
m = 45kg
Fw = 45kg • 9.81m/s² = 441.45 N
The correct answer is D) 441 N
A sedentary job is one that requires physicThose with a high fitness rating are more likely to __________.al exertion.
The statement that a sedentary job is one that requires physical exertion is False
The correct option is False.
Those with a high fitness rating are more likely to be an athlete or work in a fitness-related field.
The correct option is C.
What are sedentary jobs?Sedentary jobs are jobs that do not require any physical exertion as most times, the job can be done while sitting,
An example of a sedentary job is a secretarial job.
Sedentary jobs have low fitness ratings.
Your fitness rating serves as a gauge of how well your body can handle the physical demands of daily life. Your body is using it to alert you to underlying medical issues.
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Complete question:
A sedentary job is one that requires physical exertion. True or False
Those with a high fitness rating are more likely to __________.
A.
have difficulty coping with life
B.
suffer a heart attack because of increased stress on their heart
C.
be an athlete or work in a fitness-related field
D.
have limited social skills
A ball is thrown straight up. At the top of its path its acceleration has a value (magnitude) of _____.
a. 0 m/s/s0 m/s/s.
b. about 5 m/s/s5 m/s/s.
c. about 10 m/s/s10 m/s/s.
d. about 20 m/s/s20 m/s/s.
e. about 50 m/s/s50 m/s/s
Did you know that ultrasonic sound can serve as a cleanser? When ultrasonic sound passes through water, the sound waves cause the
water to vibrate rapidly. Ultrasonic washing machines use this principle to shake dirt loose from clothing placed in the water. The same motion is
used for cleaning small metal parts. These are placed in a cleaning fluid agitated by vibrating quartz. The action shakes the dirt and grease off the
metal quickly.
Ultrasonic sound is also used to remove smoke from the air. Standing waves are produced in the air by means of reflectors. The resulting
vibrations make the small particles of soot in the air move toward the nodes of the waves. These particles collide and stick to each other. They
form larger particles which keep growing until they are heavy enough to fall to the ground.
Standing sound waves are produced in the air by means of
1. smoke.
2. quartz.
3. reflectors.
4 collisions.
Typically, a travelling wave and its reflection are used to do this, guaranteeing that the frequency will always be the same.
How does an ultrasonic cleanser work?High-frequency sound waves are used in ultrasonic cleaning to scour clean the surface of submerged objects while travelling through liquid. The liquid solution of water or solvent is stirred up by the high-frequency sound waves, which typically have a frequency of 40 kHz. This causes the molecules in the solution to cavitate. A sound wave is a vibration that travels through a medium, like metals, water, or air.The term "ultrasonic wave" refers to a wave with a frequency that is "inaudible to humans" and typically surpasses 20 kHz.
When the cleaner is turned on without any water in the tank, the transducer burns out almost instantly, leaving you with a piece of equipment that is now entirely useless. Prior to connecting it to electricity, make sure your cleaner is full to the recommended level. Use of any flammable liquid in an ultrasonic bath is strictly prohibited.
Therefore the correct answer is reflectors .
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describe the motion represented by a horizontal line on a distance ?
The motion represented by a horizontal line on a distance is object at rest which means its distance is not changing with time.
We begin our investigation of motion by looking at objects that are extremely little in proportion to the scale of their journey through space. So that humans can deal with only an object in just this manner, we call it a particle. This chapter looks at the case at which a particle moves in such a straight path.
The coordinate of the particle, given by x or y, specifies its location. The particle's coordinate varies with time, t, as it moves. The displacement x is just the shift in position of the particle from x1 to x2, with x = x2 -X1.
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Calculate the net gravitational force experienced by each planet.
The net gravitational force between the forces is determined as 2.72 x 10²⁷ N.
What is the gravitational force between m1 and m2?
The gravitational force between m1 and m2 is calculated by applying the following formula.
F₁₂ = Gm₁m₂ / ( r₁₂²)
where;
G is universal gravitation constantm₁ is the mass 1m₂ is the mass 2F₁₂ = ( 6.67 x 10⁻¹¹ x 9 x 10²³ x 6 x 10²³ ) / ( 5 x 10⁸ )²
F₁₂ = -1.44 x 10²⁰ N
The gravitational force between M₂ and M₀ is calculated as;
F₀₂ = -( 6.67 x 10⁻¹¹ x 1.7 x 10³¹ x 6 x 10²³ ) / ( 5 x 10⁸ )²
F₀₂ = +2.72 x 10²⁷ N
Net force = 2.72 x 10²⁷ N - 1.44 x 10²⁰ N = 2.72 x 10²⁷ N
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An asphalt surface absorbs solar energy than a cement surface. this difference is chiefly due to differences in?
Answer:
Color - An asphalt surface is nearly black and a cement surface is closer to white - the emissivity (and adsorbability) is much greater for a dark surface than for a light surface
What are the units of momentum for a high-speed subatomic particle in terms of a newton and another fundamental si unit?.
The momentum of a high-speed subatomic particle is typically expressed in terms of the kilogram-meter per second (kg·m/s) or the newton-second (N·s).
These units are both derived from the SI base units of mass (kilogram), length (meter), and time (second). In terms of fundamental SI units, the momentum of a high-speed subatomic particle can also be expressed as kilogram-meter per second squared (kg·m/s²).
Momentum is a fundamental physical quantity that describes the motion of an object. It is a vector quantity, meaning it has both a magnitude and a direction. Momentum is defined as the product of an object's mass and its velocity. This means that the momentum of a high-speed subatomic particle depends on its mass and the speed at which it is travelling.
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The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is ? .
O 134A Table 430.250
O 34A Table 430.251
O 34A Table 430.250
O 34A Table 530.25
The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is Table 430.250.
What is 480 volt, three-phase power?Electrical power of the 480V three-phase variety is frequently employed in industrial and commercial environments. It is a high voltage system that has the capacity to supply a lot of power to operate substantial machinery or equipment.The transformer's supply voltage is 480/277 V. Accordingly, any phase of the supply wires has a 277 V voltage to ground.The transformer is wye-connected and has 480 volts between any two phases, as shown by the "480 Y" marking. There are 277 Volts between any phase and neutral, as shown by the "277 V" (N). Phase-to-phase voltage (277 x 1.732 = 480) is 1.732 times phase-to-neutral voltage.To learn more about full-load current refer to:
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The "Giant Swing" at a county fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Each arm supports a seat suspended from a cable 5. 00 m long, the upper end of the cable being fastened to the arm at a point 3. 00 m from the central shaft.
(a) Find the time of one revolution of the swing if the cable supporting a seat makes an angle of 30. 0∘ with the vertical.
(b) Does the angle depend on the weight of the passenger for a given rate of revolution?
The swing takes 6.2 seconds to complete one revolution.
The weight of the passenger has no bearing on the angle.
The settings provided;
Angle of tilt, = 300 length of the fastened arm, r1 = 3 m length of the cable, L = 5 m
The circular path's overall radius is computed as follows;
R = r1 + Lsin(θ)
R = 3 + 5sin(30)
R = 5.5 m
The following formula is used to compute the swing's normal force:
Tcos (-1) mg =
This is how the parallel force on the swing is calculated:
Divide (2) by (1);
Tsin (θ)/Tcos (θ) = mv2 / Rmg
tan(θ) = v2/Rg
v2 = Rg
Tsin(θ) = m2 --(2) R (θ)
: v = Rgtan (θ)
V Equals 5.58 m/s when v = 5.5 x 9.8 tan(30)
The swing's time for one rotation is determined as follows:
T = 2πr / v
= 2π × 5.5 / 5.58 T= 6.2 s
(b) The rotation's angle is stated as;
where tan(θ) = Rg;
R is the radius of the circular path, and v is the swing's speed.
As a result, the angle is independent of the passenger's weight.
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a 30 kilogram penguin slides on its belly on a horizontal surface with coefficient of kinetic friction 0.08 at an initial speed of 12 meters per second. how far will the penguin slide before coming to a stop?
a 30 kilogram penguin slides on its belly on a horizontal surface with the coefficient of kinetic friction 0.08 with an initial speed of 12 m/s . The deacceleration of -0.8m/s^2 will apply and distance travelled will be accordingly it.
What is coefficient of kinetic friction?The ratio of the normal force Ff/N to the kinetic friction force (F) between the surfaces in contact during motion is known as the coefficient of kinetic friction. The surfaces in contact affect both the static and kinetic coefficients of friction. Experimental data is used to determine their values.
Calculation:
given:
coefficient of kinetic friction 0.08;
initial speed of 12 meters per second.
30 kilogram penguin
-μkmg=ma
a=-μkg
inserting the values
a=-0.08*10
a=-0.8m/s^2
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An airplane flew at an average rate of 600 miles per hour from tokyo to seattle. Because of a strong headwind, the average rate of the return trip was only 480 mph. The round trip took 18 hours.
According to question, 600t = 480(18 - t) equation can be used to determine the time for each leg.
Headwinds are advantageous during takeoff and landing because they let you to use a shorter runway. Headwinds are problematic during flying because they lead you to move more slowly and use more fuel to reach your objective. In contrast, tailwinds are advantageous throughout flight but detrimental during takeoff and landing.
Although a cruise flight is not considerably impacted by wind speed, strong winds frequently make people nervous when flying. Only the duration of the flight may differ due to strong winds. An airplane can slow down due to strong headwinds.
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how to calculate friction force without coefficient ?
Answer:If the object on the incline is not moving, the force of static friction will be mg•sin(theta)
Explanation:
Can kinetic energy exist without momentum?
Yes, kinetic energy exist without momentum because kinetic energy and momentum are related but not necessarily dependent on each other.
In classical mechanics, kinetic energy and momentum are closely related and are both properties of an object that depends on its motion. According to the principle of conservation of momentum, when the net external force acting on an object is zero, the momentum of the object is conserved. However, it is possible for an object to have kinetic energy without having momentum. For example, in quantum mechanics, particles such as photons and other elementary particles, can have kinetic energy without having a definite momentum, this is known as wave-particle duality. In a similar way, in a system of multiple particles, the kinetic energy of one particle can be increased or decreased without affecting the total momentum of the system, as long as the momentum of the other particles is adjusted accordingly. While an object with kinetic energy typically has momentum, it is possible for an object to have kinetic energy without having momentum.
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5. a. In daily language we express the sign (plus or minus) of a change by using different words. For example, Elizabeth gained 1 kg, Tom lost 2 kg. Express these statements in terms of change in mass.
b. In the morning the temperature rose from 10°C to 14°C. In the afternoon the temperature fell from 16 deg * C to 11°C. What were the changes in temperature in the morning and in the after- noon?
Expressing these statements in terms of change in mass it will be Elizabeth gained 1 kg mass and Tom lost 2 kg mass. The changes in temperature in the morning and in the afternoon are 4° and -5° respectively.
What does the word "mass" mean?
The term mass refers to the quantity of matter that makes up something or someone. As acceleration is a rate of change of the velocity, mass can also be thought of as the amount of the inertia an item has the strength of an object's gravitational pull to other bodies is also influenced by its mass.
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A car applies a force of 36. 8 newtons for a 668-meter loop; what was the work done?(1 point).
The value of the work that was done on the car is 24.6 J.
How to calculate how much the work on the car was done?Work define as an energy that move from or to one object to the another object that has possibility to make the object have the displacement, or work is equal to force multiply with displacement in meters. If we write it in formula form, it will be written as W = F x s. As per data given F = 36.8 N and s = 668 m. The work will be:
W = F x s
W = 36.8N x 668m
W = 24,582J
Round the work value. So, the answer will be 24.6 J
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A ship is moving at a speed of 15 km/h parallel to a straight shoreline. The ship is 4 km from shore and it passes a lighthouse at noon. (a) Express the distance s between the lighthouse and the ship as a function of d, the distance the ship has traveled since noon; that is, find f so that s = f(d). S = f(d) = (b) Express d as a function of t, the time elapsed since noon; that is, find g so that d = g(t). D = g(t) = (c) Find f ∘ g. (f ∘ g)(t) =
The time elapsed since noon where d as a function of t, then g so that d will be: (a) S = 4 km - d, (b) D = 15 km/h * t, (c) (f ∘ g)(t) = 4 km - (15 km/h * t) = 4 km - 15t.
What is the time?
It is currently impossible to answer the question without knowing what time it is. Depending on the time of day, the answer could be anything from "It is midnight" to "It is noon" or any other time. However, without more information, it is impossible to provide an accurate answer.The time is whatever the clock says it is. Depending on where you are located in the world, it could be a different time. It is important to be aware of the time in order to stay on schedule and be productive. Knowing the exact time is also important for making sure you don't miss important appointments or events.
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A rolling ball has 28 joules of kinetic energy and is rolling 7m/s. Find its mass
kinetic energy of the rolling ball of velocity of 7 m/s is given 28 Joules. Then, the mass of the rolling ball is 1.14 kg.
What is kinetic energy?The kinetic energy of an object is the energy generated by virtue of its motion. It is related to its mass and velocity by the expression written below:
Ke = 1/2 m v²
Thus, kinetic energy increases with mas and velocity. When a body starts moving from rest, its potential energy starts to convert into kinetic energy.
Given the velocity of the rolling ball = 30 m/s
let m be the mass of the rolling ball.
then Ke = 1/2 × m kg ×7 m/s × 7 m/s = 28 J.
Then mass m = 2 Ke/v²
m = 2 × 28 J/(7 m/s)²
m = 1.14 Kg
Therefore, the mass of the rolling ball with a velocity of 7 m/s and 28 joules of kinetic energy is 1.14 Kg.
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In 1936, Col. Harry Froboess of Switzerland jumped into the ocean from the airship Graf Hindenburg, which was 1.20 x 10? m above the water's surface.
Assuming Froboess had a mass of 72.0 kg, what was his kinetic energy at the moment he was 30.0 m from the water's surface? What was his speed at that moment? Neglect the air resistance
(a) The kinetic energy of Foboess when he was 30.0 m from the water's surface is 63,504 J.
(b) The speed of Forboess at that moment is 42 m/s.
What was his kinetic energy
The kinetic energy of Foboess when he was 30.0 m from the water's surface is calculated by applying the principle of conservation of energy.
K.E = ΔP.E
where;
ΔP.E is the change in the potential energyΔP.E = mg (h1 - h2 )
where;
m is the mass of Foboessg is acceleration due to gravityh1 is the initial height above water surfaceh2 is the final height above water surfaceThe kinetic energy is calculated as follows;
K.E = ΔP.E = mg (h1 - h2 )
ΔP.E = 72 x 9.8 (120 - 30 )
ΔP.E = 63,504 J
The speed of Forboess at that moment is calculated as;
v = √ 2g(h1 - h2 )
v = √ ( 2 x 9.8 x (120 - 30 )
v = 42 m/s
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the solution is not obvious and important information is missing in a
The solution is not obvious, and important information is missing in a problem.
What is problem? A situation, query, or item that results in difficulty, tension, or uncertainty is referred to as an issue. A question that is posed to elicit thought is also a problem. A statement or equation that needs to have its solution is referred to in mathematics as a problem.Between "problem" and "task," a distinction can be made. A chore is typically a clearly defined piece of work that is imposed by another person, may be taxing, and is frequently burdensome. A task, a circumstance, or a person that is challenging to handle or manage because of its complexity and opaqueness is often thought of as a difficulty. An issue indicated for investigation or verification is referred to as a problem in common speech. Problems are regarded as matters in each situation.For more information on problem kindly visit to
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Complete question: the solution is not obvious and important information is missing in a____
a. problem
b. consequence
c. response
d. query
Astronauts on the first trip to mars take along a pendulum that has a period on earth of 1.50 s. the period on the other planet turns out to be 2.45 s. what is the free-fall acceleration on that other planet?
On Mars, the rate of free fall acceleration is 3.68 m/s².
A simple L-length pendulum's period T can be calculated using,
T = 2π[tex]\sqrt{\frac{L}{g} }[/tex]
where g stands for gravity's acceleration.
A pendulum's period on Earth is, T = 2π[tex]\sqrt{\frac{L}{g} }[/tex]... (1)
The pendulum's period on Mars is, T' = 2π[tex]\sqrt{\frac{L}{g'} }[/tex]... (2)
It is given that T = 1.50 s and T' = 2.45 s.
Eq. (1) divided by Eq. (2) results in:
[tex]\frac{T}{T'} =[/tex] [tex]\frac{2\pi \sqrt{\frac{L}{g} } }{2\pi \sqrt{\frac{L}{g'} } }[/tex]
or, [tex]\frac{T}{T'} = \sqrt{\frac{g'}{g} }[/tex]
or, [tex]g' = \frac{T^{2} }{T'^{2} } g[/tex]
We have, g = 9.8 m/s²
So, putting all the values in above equation, we get
g' = [tex]\frac{1.50^{2} }{2.45^{2} }[/tex] × 9.8
or, g' = 3.68 m/s².
Hence, the free-fall acceleration is 3.68 m/s².
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What is the momentum of a 5,500 kg car moving at 110 m/s? Write the equation. Substitute with units
Answer:
605,000 kg m/s
Explanation:
p = momentum (kg m/s)
m= mass (kg)
v= velocity (m/s)
p = mv
p = 5,500 x 110
p = 605,000 kg m/s
a runner is moving at a speed of 8.8 m/s rounds a bend of a radius of 25 m. what is the centripetal acceleration of the runner?
The centripetal acceleration of the runner is 3.1 m/s². The result is obtained by using the formula for centripetal acceleration.
What is centripetal acceleration?Centripetal acceleration is the acceleration experienced in a circular motion. The direction always points toward the center of rotation.
The centripetal acceleration can be expressed as
ac = v²/r
Where
ac = centripetal acceleration (m/s²)v = linear speed of object in circular motionr = radius of circular motionA runner is moving in a circle with
Speed, v = 8.8 m/sRadius, r = 25 mFind the centripetal acceleration!
The centripetal acceleration would be
ac = v²/r
ac = 8.8²/25
ac = 77.44/25
ac = 3.1 m/s²
Hence, the runner would have the centripetal acceleration of 3.1 m/s².
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