### Find the maximum height reached by ball

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##### Reference no: EM1314646

Q1. A golf ball with the initial angle of 34° lands exactly 240 m down the range on the level course.

A) Neglect air friction, what initial speed would achieve this result?

B) Using speed determined in item (a), find the maximum height reached by ball.

Q2. Light of wavelength 400nm is shone on a metal surface in an apparatus. The work function of the metal is 2.50 eV.

(a) Find the extinction voltage that is, retarding voltage at which the photoelectron current disappears. (b) Find speed of the fastest photoelectrons.

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