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A child pushes a 20 kg box across a wood floor as shown in
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What is the friction force of the road on the tires of a car
what is the friction force of the road on the tires of a car that is driving uphill with constant speed? … read more
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A man pushes a 20.0 kg wooden crate 50.0 m across a
A man pushes a 20.0 kg wooden crate 50.0 m across a horizontal wooden floor with a constant velocity. Calculate how much work was done on the box by friction as the man pushed the box across the horiz… read more
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Which of the following is a true statement regarding
Which of the following is a true statement regarding perpetual motion machines?They will work if you can minimize the friction in the machine.They will not work because you can never completely get ri… read more
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I want to get the true or false problem's answer. This is
Second opinion] I want to get the true or false problem's answer … read more
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This is that question If a system experiences no friction during motion, there is no change in the total energy of the system. … read more
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1. What concepts would you use to describe an asteroids motion?
1. What concepts would you use to describe an asteroid's motion? 2. If the asteroid is moving at a constant speed in its orbit, does this also mean it is moving at a constant velocity? Explain your an… read more
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5 Physics questions I need assistance with please- I keep getting the wrong answer (No work needs to be shown): 1. Vector v has a magnitude of 76 m and vector u has a magnitude of 77 m. The angle betw… read more
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A 10 kg box is traveling 5 m/s down a 4 meter inclined plane
A 10 kg box is traveling 5 m/s down a 4 meter inclined plane that is at an angle of 37 degrees. The coefficient of friction is .4. What is the change in potential energy, the work done by the friction… read more
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A flywheel, mass 3 kg, outside radius 300 mm, radius of gyration
A flywheel, mass 3 kg, outside radius 300 mm, radius of gyration 212 mm. suspended mass 0.5 kg. The mass is released and falls 0.5 m in 1.5 seconds. calculate: a). tension in the rope. b). frictional … read more
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A horizontal force 70 N acts on mass 5 kg. From rest the distance
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Three smooth stones, A, B and C are initially at rest, in contact
Three smooth stones, A, B and C are initially at rest, in contact with each other on the smooth surface of a frozen lake. The masses of the stones are, to 3 significant figures, A = 800 g, B = 600 g a… read more
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Three smooth stones, A, B and C are initially at rest, in contact
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A cheetah can accelerate from rest to a speed of 27.8 m/s in
A cheetah can accelerate from rest to a speed of 27.8 m/s in 5.20 s. The cheetah can maintain this speed for 9.7 seconds before it quickly runs out of energy and stops. What distance does the cehetah … read more
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RRJha, I have two physics questions Im working on right
RRJha, I have two physics questions I'm working on right now: Question 1: When an object is lifted up it gains in potential energy. Where is the potential energy stored? I believe the "stored" energy … read more
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1 The purpose of break through propulsion physics is to
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What is the physics equation for car stopping distances
I have an assignment to: Determine the minimum stopping distances at all speeds up to the cars maximum when the cars wheels lock and the car skids to a halt on the road for Dry, Wet and Icy roads… read more
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