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In the game of billiards, all the balls have approximately the same mass, about 0.17 kg. The cue ball hits a stationary ball and deflects 30° from its original path. The other ball has a speed of 1.5 m/s immediately after the collision and makes an angle of 60° below the line of the cue balls original path. What is the speed of the cue ball after the collision?
With its wheels locked, a van slides down a hill inclined at 38.0 to the horizontal. Find the acceleration of this van if the hill is icy and frictionless
A proton is at the origin and an electon is at the point x = 0.41 nm, y = 0.36 nm. Find the electric FIELD at the proton,
The potential difference between the ends of a resistor is 9 V and the rate of energy dissipation in it is 18 W. What is the value of that resistor
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
100.0 W tungsten filament bulb generates 95.0 W of heat, determine difference in temp. between inner and outer surface of glass
You're convinced the opera is almost over because of the large women singing a loud vibrato. What is the power coming from her voice
Gas lanterns used on camping trips have mantles (small lacy bags that give off light) made from a rayon mesh impregnated with thorium, A typical mantle contains 345 mg of thorium. What is the activity of the mantle
Your cell phone typically consumes about 440 mW of power when you text a friend. what is the current flowing through the cell-phone circuitry under these circumstances
A 50 kg diver steps off a 10 m high platform and strikes the water below in 1.43 seconds. determine the average frictional force that stopped his motion while in the water
Zinc has a work function of 4.30 eV. What is the maximum possible speed of the electron
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current
a 30 kg child stands on the edge of a stationary merry-go-round of radius 2.0 m. What is the angular speed of the merry-go-round just after the ball is caught
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