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A person pulls a toboggan for a distance of 20.0 m along the snow with a rope directed 30.0° above the snow. The tension in the rope is 95.0 N.
(a) How much work is done on the toboggan by the tension force?
(b) How much work is done if the same tension is directed parallel to the snow?
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 5.0 s, it rotates 5 rad. What was the angular acceleration during this time
A 50,000 kg locomotive is traveling at 60.0 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
An 85-kg man stands 0.70 m from the center of a large, rotating turntable with a frictionless axis. What is the turntable's moment of inertia
A certain camera has f-numbers that range from 1 to 20. If the focal length of the lens is 51 mm, what is the range of aperture diameters for the camera
if a van de graff generator has an electric potential of 169 kv and a diameter of 18.9 cm find how many more protons
A body of mass M is initially at rest, Find the expression for the instantaneous power delivered to the body as a function of time
A battery is connected in series with a 0.27-? resistor and an inductor, Find the inductance of the circuit
A grating with 633 slits/cm is illuminated with light of wavelength 419 nm. What is the highest-order number that might be observed with this grating.
2.5 kg of water undergoes an isothermal, reversible process beginning at 100°C, saturated liquid and ending at 1.0 MPa. Find the change in specific entropy of the water
how fast is the mass moving when leaves the spring. What is her velocity relative to the ice surface.
A pendulum of Length L= 42.1cm and mass m=169g is released from rest when the cord makes an angle of 65.4 degrees with the vertical
The supersonic aircraft Concorde has a length of 61.6m when sitting on the ground on a typical day when the temperature is 12.0C . The Concorde is primarily made of aluminum
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