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A student could either pull or push, at an angle of 30? from the horizontal, a 55kg crate on a horizontal surface, where the coefficient of kinetic friction between the crate and surface is 0.23. The crate is to be moved a horizontal distance of 21m.
Calculate the minimum work required for both pulling and pushing.
The gravitational potential energy of all the water stored behind a very large dam is 1.2Ã-10^16 J, How far apart should you place the charges
You fire a gun horizontally that is 25m off the ground and the bullet goes at 200m/s. What is the time it takes for the bullet to hit ground, how far down range does bullet travel, and what is the resultant velocity (in m/s) and final angle.
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
0.100kg stone rests on a frictionless, horizontal surface. A bullet of mass 9.00g , find the magnitude of Daniel's velocity after the collision
A 69.00 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.20. What would be magnitude of the acceleration.
A 10.0 kg crate slides along a horizontal frictionless surface at a constant speed of 4.0 m/s. What is the speed of the crate when it arrives at the lower surface
Calculate the moment of inertia of a skater given the following information. THe 65 kg skater is approximated as a cylinder that has a .110 m radius
A 2.0{\rm mm} -diameter ball bearing has 3.0×109 excess electrons. What is the ball bearing's potential
On planet Zog, Mr. Spock measures that it takes 1.38 s for a mass of 0.30 kg to hit the ground when released from rest from a height of 2.85 m
Oxygen (O2) gas within a piston-cylinder assembly undergoes an expansion from a volume V1= 0.02 m3 to volume V2 = 0.03 m3. The relationship between pressure and volume throughout the procedure is p=AV-1+B, where A= 0.06 bar.m3 and B= 3.0 bar. For the..
A dog and her handler are at rest and are facing each other at a distance 40.0meters. Find the (common) position where the dog and the handler meet
An astronaut is being tested in a centrifuge. The centrifuge has a radius of 8.77 m, what is the magnitude of the astronaut's linear speed
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