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A 30 kg launching machine fires a 250 gram projectile horizontally at 100 m/s. This causes the machine to slide backward 1.122 meters before coming to a rest.
a) What is the machine's velocity?
b) How long did it take to go the 1.122 meters?
c) What was the momentum of the machine?
d) What was the force necessary to move this machine?
e) What was its acceleration during this time?
f) What is the coefficient of kinetic friction?
g) What surfaces are likely to cause this friction?
h) IF this was on the moon, and all else was the same, how far would this machine slide?
A student sits on a rotating stool holding two 2.0-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
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A high-voltage power line carries a current of 124 at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, What direction does the magnetic force point
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The current in a 1.70mm Ã? 1.70mm square aluminum wire is 1.80A. compute the electron drift speed
On a humid day, an electric field of 2.00 * 10^4 N/C is enough to produce sparks about an inch long. Suppose that in your physics class, use Coulomb's law to calculate the electric field at the surface of the sphere
You have a string with a mass of 0.0129 kg. You stretch the string with a force of 9.67 N, giving it a length of 1.95 m. What is the wavelength of the standing wave you create in the string
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