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A billiard ball (A) of mass m is moving at 10 cm/s [E] toward another billiard ball (B) of equal mass that has an initial velocity of 0. After the collision ball B moves off at 5.0 cm/s at [E60S] while ball A moves off at and angle of [E30N]. Determine the speed of ball A
Each year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 meter. find what was his average power output during the race
A 1000N force stretches a wire by 4.0mm . A:A second wire of the same material is twice as long and has twice the diameter. How much force is needed to stretch it by 1.0 mm? B:A third wire of the same material is twice as long as the first and has..
A cable is used to raise a 29kg urn from an underwater archeological site. There is a 21 N drag force from the water as the urn is raised at a constant speed.
Calculate the change in entropy of 250 g of water heated slowly from 20ºC to 80ºC.
The figure shows two thin-walled circular cross-sections with radius a and wall thickness t
Sketch the probability density functions of electrons at energies E+ and E- and k=π/a and sketch also the periodic potential V(x) using the same origin of the coordinate system.
Another way to sort the droplets would be to give each droplet the same charge, then vary the electric field between the deflection plates.
The magnetic field in a certain region is 0.128 , and its direction is that of the axis in the figure. What is the magnetic flux across the surface ?
A cannon tilted up at a 30° angle fires a cannon ball at 65 m/s, What is the ball's impact speed on the ground below
Two cylinders, made from the same material and having the same length, have radii r1 and r2 with r1 > r2. Find the final angular velocity of the smaller cylinder
An osprey's call is a distinct whistle at 2200Hz. An osprey calls while diving at you, to drive you away from her nest. You hear the call at 2300 Hz. How fast is the osprey approaching
A block rests on a horizontal surface, and the coefficient of static friction between the block, Find the frequency at which the block begins to slide on the surface
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