12,727 Answered Questions for the topic physics

Physics

12/13/22

What would be the student weight 1 radius away from the earth surface, 2 radii away?  3 radii away.  Calculate g at each altitude
Calculate the weight of a student that weighs 154 lbs in newton.  what would be the student weight 1 radius away from the earth surface, 2 radii away?  3 radii away.  Calculate g at each altitude.
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Physics

12/13/22

physics question
You bought a violin that was nicely tuned in the music store. When you took it home where the temperature is much different than the music store, the notes were not in tune any more. Please explain.
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Physics

12/13/22

physics question

A child asks you very politely why the sky appears blue on a bright and sunny day. What would you say to him or her? They then go on to ask about why the sunset appears red when it normally looks... more
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Physics Math Science

12/13/22

A football player kicked a football ball at 31 meters/second at an angle of 50° from the ground.

What is the flight time of the ball? What is the range of the kick? What is the maximum height of the kick?
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Physics Math Science

12/13/22

A bomber flying horizontally at 120 meters/second drops a bomb from an altitude of 240 meters.

How long does it take for the bomb to hit the ground?
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Physics

12/12/22

What is the momentum

Two carts mounted on an air track are moving toward one another. Cart 1 has a speed of 0.9 m/s and a mass of 0.46 kg. Cart 2 has a mass of 0.75 kg.(a) If the total momentum of the system is to be... more
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Physics

12/12/22

What is the momentum
During an ice show a 60.0 kg skater leaps into the air and is caught by an initially stationary 55.0 kg skater.(a)What is their final velocity in meters per second assuming negligible friction and... more
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Physics

12/12/22

What is the momentum
Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 120,000 kg and a velocity of 0.300 m/s, and... more
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Physics

12/12/22

What is the impulse on a 45,000 kg airplane when it changes its velocity from 242 m/s to 258 m/s?
720,000 kg·m/s2,800 kg·m/s16 kg·m/s440,000 kg·m/s
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Physics Calculus

12/12/22

A ball is thrown upward with an initial velocity of 64 feet per second
A ball is thrown upward with an initial velocity of 64 feet per second from an initial height of 80 feet. How long does it take for the ball to hit the ground? (Acceleration due to gravity is a... more
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Physics

12/12/22

What is the speed of a wave that has a wavelength of 4 meters and a frequency of 2 Hz? V = fʎ
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Physics

12/12/22

A 491 kg roller-coaster car rolls down past point A (radius of 10m) and then up past point B (radius of 15m).
(a) If the vehicle has a speed of 26.0 m/s at point A, what is the force of the track on the vehicle at this point?(b) What is the maximum speed the vehicle can have at B for gravity to hold it on... more
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Physics

12/12/22

A child, who has a mass of 41 kg, tries to swing from a 10.0 m long rope.
Its speed at the bottom of the swing is 5.0 m/s. The rope is only rated to handle 3000 N of tensile force. The maximum amount of force will be put on the rope at the bottom of the swing. What is... more
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Physics

12/12/22

physics lab questions
just answer the questionsExperiment: There are many household devices that manipulate light, and one of the most familiar is a magnifying glass. A magnifying glass bends light rays toward one... more
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Physics

12/12/22

physics question
What makes diamonds and their cut special in the way that they shine and sparkle?How is light affected as it moves from air through the diamond and back out into theair? If someone submerges their... more
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Physics

12/12/22

physics question
A child asks you very politely why the sky appears blue on a bright and sunny day.What would you say to him or her? They then go on to ask about why the sunsetappears red when it normally looks... more
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Physics

12/10/22

I am having a lot of difficulty with this question. Thank you in advance for a thorough explanation!
A student is doing a physics experiment with a pendulum, with a 2.8kg bob, in the car ride home from school. At one point during the ride the car is increasing speed at a rate of 4.8m/s2. Assume... more
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Physics

12/10/22

PLease help provide a thorough explanation. Thank you!
A student is doing a physics experiment with a pendulum in the car ride home from school. At one point during the ride she notices that the 1.4kg bob of the pendulum is holding the position shown.... more
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Physics

12/10/22

PLease help on this question. Through explanation is appreciated
A 3000kg helicopter, tilted as shown, is flying horizontally (neither gaining nor losing altitude). The helicopter is experiencing a 1200N drag.How many forces are acting on the helicopter?Are all... more
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Physics

12/10/22

I need help on this question. I am not too sure how to approach it. Thank you in advance!
A system is released. The mass of each object is shown. Neglect drag, friction and the mass of the string and pulley. How many forces are acting on the 7kg mass? How many forces are acting... more
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Physics

12/10/22

Please help give a thorough explanation so that I can understand these problems better. Thank You!
A 1300kg truck is pulling a 600kg trailer to the right by generating a 420N force. The truck is experiencing a 600N drag and the trailer experiences 340N drag. Neglect any friction impeding the... more
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Physics

12/10/22

I need help on this physics question. I am not sure how to approach it.
A student is trying to calculate the coefficent of friction between a box and a surface. She measures that the 80kg box will slide if the student pushes with a force greater than 408N.Answer each... more
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12/10/22

How is it that we can lose so many neurons without massive memory effects?
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Physics

12/09/22

circular motion bicycle problem( physics 12).
Bicycle racetracks, or velodromes, are banked at the ends. If we ignore friction, and the banking angle is  θ= 25 degrees.a) what is the maximum speed of a bicycle if it is to move around the end... more
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Physics

12/09/22

potential energy/ momentum
Mary applies a force of 78 N to push a box with an acceleration of 0.47 m/s2. When she increases the pushing force to 86 N, the box's acceleration changes to 0.64 m/s2. There is a constant friction... more
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