4,584 Answered Questions for the topic physics

1h

Please help me understand this physics question!
Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles per hour). A local team has drafted an up-and-coming, left-handed pitcher who can consistently... more
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1h

A ball is released from a height of 12 m and weighs 37 N. What is the magnitude | Δ U | of the total change in potential energy when the ball falls to the ground?
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12h

Physics question
Find moment of inertia of 1 kg cylinder shaped ring, rotating around its axis of symmetry. Part a: Inner radius of the ring is 0,2 m, outer radius - 0,25 m; Part b: distance of rotation axis is 0,2 m
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1d

physics dynamic friction

A block rests on an inclined plane. Its angle with the horizontal is increased. When the angle becomes 40 ̊, the block starts to slide. Calculate the coefficient of static friction between the... more
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1d

Question related to Applied Physics
Question:An elecric dipole of two charged particles of magnitude q but of opposite sign, oriented along z-axis separated by distance d as shown in fig.1. A point P is located on z-axis at distance... more
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1d

A 1500 kg mass car travelling at 25 m/s hit a wall. The front of the car is 0,5 m compressed.
Find: Force the wall acted on car Acceleration of the car Acceleration the driver was being stopped, if the seat belts let him move 20 cm forward (tenseness of seat belts during the stop didn't... more
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1d

A ball is kicked vertically 20 m/s from height of 1,5 m above the surface. Find a) max height the ball reaches, b) speed it hits the surface, c) time in the air
How to solve these?Answers: a) 21,9 m b) 20,7 m/s c) 4,1 s
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1d

Uniform Circular Motion
A space station is made up of a long cylinder with radius 250 meters. In order to simulate gravity on Earth, what is the period of the space station’s rotation?
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2d

Spring-like force acts on a body
The only force acting on a 3.50-kg body as it moves along a positive x axis has an x component Fx = -6.40x N, with x in meters. The velocity at x = 4.82 m is 7.35 m/s. a) What is the velocity of... more
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2d

Can someone do this impossible problem?
If you lift a box 60 m with a force of 120 N what is the output work? If you push the same box 200 m up a ramp to the same height with the force of 25 N what is the input work? And what is the... more
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2d

force and motion
A bus travels at 6.0  then comes to a complete stop in 2.0 seconds. What is the average acceleration of the bus?Show your work 
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2d

Force and Motion

During a race, a sprinter increases her speed from 5.5  to 7.5  over a period of 1.5 seconds. What is the sprinter's average acceleration?Show your work.
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2d

What is the efficiency of the incline plane?
An incline plane requires 600 J of output work and 1200 J of input work.
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2d

What is it’s M.A.?
An incline plane has length of 11 meters and a height of 3 meters.
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2d

How much work is done?
A box with a mass of 10kg being pulled by the force of gravity at 10 m/sec2 is lifted upward 10 meters.
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2d

What is it’s M.A.?
A lever has a distance from the fulcrum to the input force of 12 meters and a distance of the fulcrum to the output force of 2 meters.
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2d

What is it’s M.A.?
A lever has a distance from the fulcrum to the input force of 12 meters and a distance of the fulcrum to the output force of 2 meters.
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2d

Physics Dynamics Friction Problems

43. A 200-lb crate lies on the floor. The coefficient of static friction between the crate and floor is 0.60. What is the minimum force required to start the crate sliding? 44. A 60-kg student... more
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2d

What is it’s M.A.?
An incline plane has length of 11 meters and a height of 3 meters.
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2d

PHYSICS QUESTION 1
8.1 moles of an ideal monatomic gas expand adiabatically, performing 8800  of work in the process.What is the change in temperature of the gas during this expansion?
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3d

web assign physics
A bartender slides a beer mug at 1.0 m/s towards a customer at the end of a frictionless bar that is 1.1 m tall. The customer makes a grab for the mug and misses, and the mug sails off the end of... more
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3d

A 1600 kg is driven through town with a speed of 22 m/s. What is the magnitude of the cars momentum?
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3d

force and Motion
A train travels 120 kilometers in 2.5 hours. What is the train's average speed?Show your work
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3d

forces and Motion
Kellie jogs 4.0 km in 32 minutes, then 2.0 km in 22 minutes, and finally 1.0 km in 16 minutes. What is her average speed in ?Show your work
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4d

Forces and Motion
Matt is driving down 7th street. He drives 150 meters in 18 seconds. Assuming he does not speed up or slow down, what is his speed?Show your work 
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