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An astronaut weighs 185 lb on earth. What is her weight on the moon, where the acceleration due to gravity is 5.28 ft/s2?
Charge of uniform density (80 nC/m^3) is distributed throughout a hollow cylinder region formed by two coaxial cylindrical surfaces of radii 1.0 mm and 3.0 mm. Determine the magnitude of the electric field at a point which is 2.0 mm from the symmetry..
A proton moves perpendicularly to a uniform magnetic field at 5.0 107 m/s and exhibits an acceleration of 1.0 1013 m/s2 in the +x-direction when its velocity is in the +z-direction. find the magnitude and direction of the field.
The rms speed of a sample gas is increased by 2 %, What is the percent change in the temperature of the gas
A magnetic field is directed at a 40.0 angle to a plane circular loop of wire with a radius of 26.8 cm. a) Draw a diagram showing the wire loop, compute the induced emf in the wire loop
A mover's dolly is used to deliver a refriger- ator up a ramp into a house. What gravitational potential energy is gained by the refrigerator
Find out the normal force exerted on the crate by the elevator.
plan a free-body diagram of the wire and bird system. How much tension does the bird produce in the wire? Ignore the weight of the wire.what is the rotational inertia of the wheel.
A 69-kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted in place.
A slide projector needs to create a 96.0 cm high image of a 2.20 cm tall slide. The screen is 301 cm from the slide. find focal length does the lens need
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window in one hour
The loaded cab of an elevator has a mass of 2.8 x 10^3 kg and moves 214 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.54 m/s. The pulling force is 108 N parallel to the incline, What is the change in kinetic energy of the crate
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