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A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is -6.0 x 103 J, what is the speed of the skier on reaching the bottom of the slope?
How does this number of calories compare with the number of calories required to vary the same gram of 100 degree C boiling water to 100 degree C steam.
Suppose a train engineer is climbing a vertical ladder at a speed of 0.2m/s while the train is slowly coasting east at 0.70 m/s. Find out the vector of the engineer relative to the ground in rectangular notation.
A concave mirror produces a virtual image that is seven times as tall as the object. What is the focal length of this mirror
a rod of length L lies along the x-axis between x=A and x=A+L. The rod has a non-uniform charge density, What is the magnitude of the electric field at the origin
You gather up your things and quickly flee the hotel. As you make your way through the crowded streets you are forced to conclude that Miquel is supplying information to your would be killers, what is the horizontal speed of the boat after you jump..
W hat is the ratio of an amplitude of the damped oscillations
Assume this asteroid has the shape of a sphere. A rock sitting on the surface of the asteroid has a weight of 100 Newtons. How is the mass of the rock affected by its change in position
A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find out the mass of the worker.
The magnetic flux that passes through one turn of a 10-turn coil of wire changes to 5.0 Wb from 6.0 Wb in a time of 0.086 s. The average induced current in the coil is 185A. What is the resistance of the wire
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. If the final pressure is 100 kPa, determine a) the work done on the gas and b) the heat transfer (specify whether the..
A uniform density cube of mass m, side 2b, and center at C is placed on a fixed horizontal cylinder of radius r and center O in Earth's gravitational field.
When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell.
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