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The air inside a bicycle tire pump has 217 joules of work done on it as 55.3 joules of heat are added to it. What is the change in internal energy of the air?
Two people carry a heavy electric motor by placing it on a light board 1.55 m long. One person lifts at one end with a force of 420 N, Where along the board is its center of gravity located
A 16.2 dog is running northward at 2.77 , while a 4.51 cat is running eastward at 3.05. Find the direction and magnitude of the owner's velocity
Discuss the main causes of loss of available energy in a turbine and how they can be minimized. What are typical turbine efficiencies?
Sketch the detailed periodic potential for this model Si? Is this value of W reasonable and why? How does the bandwidth vary with interatomic spacing a.
A pump is required to lift 20 kilogram of water per minute through a height of 4.00 meter. Find what output power rating in watts should the pump motor have
If you are cruising down the road at 50 mph and a policeman with a radar gun (wavelength 1 cm) reflects radar light off your bumper, what wavelength of radar light does he get back
Andy drops a ball from a height of 1.28 m. The ball hits the ground and rebounds to 40 percent of its original height. What is the y-component of the velocity of the ball the instant before it hits the ground? What is the y-component of the velocity ..
a -10.0nc point charge and a 20.0nc point charge are 15.0cm apart on the x-axis.what is the electric potential at the
Pete slides a crate up a ramp at an angle of 23.1 degree by exerting a 138 Newton force parallel to the ramp. The crate moves at constant speed. Compute how much work has been done against gravity
Light in vacuum is incident on the surface of a slab oftransparent material. What is the index of refraction of the transparent material
Miranda, a satellite of Uranus, is shown in part a of the figure below. It can be modeled as a sphere of radius 242 km and mass 6.68 1019 kg. Find the free-fall acceleration on its surface
Spiderman, whose mass is 70.0 kg, is dangling on the free end of a 12.6-m-long rope, the other end of which is fixed to a tree limb above. find How much work was done by the gravitational force on Spiderman in this maneuver
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