Find the eight balls speed after the colision. parallel, Ask an Expert

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Q. A cue ball initially moving at 2.6 m/s strikes a stationary eight ball of the same size and mass. After the collision, the cue ball's final speed is 0.97 m/s at an angle of alpha with respect to its original line of motion. Find the eight ball's speed after the colision. Assume an elastic collision (ignoring friction and rotational motion).

Q. Parallel rays of green mercury light with a wavelength of 546 nm pass through a slit with a width of 0.437 mm. What is the distance from the central maximum to the first minimum on a screen 1.75 mm away from the slit?

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