Simple Harmonic Motion
1. The displacement of a particle at t = 0.25 s is given by the expression
x= (4.0 m) cos (3.0 p t + p), where x is in meters and t is in seconds. Determine
(a) the frequency and period of the motion,
(b) the amplitude of the motion,
(c) the phase constant, and
(d) the displacement of the particle at t = 0.25 s

This is the number of complete movements of a wave per second.

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )

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