A golf ball is thrown straight up in the air at a velocity of 8.3 m/s. T/I (a) Determine the maximum height of the golf ball. [ans: 3.5 m]
(b) How long will it take the ball to reach its maximum height? [ans: 0.85 s]
(c) How long will it take the ball to fall from its maximum height to the height from
which it was initially launched?

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?