Suppose that a car weighing 2000 pounds is supported by four shock absorbers each shock absorber has a spring constant of 6250 lbs/foot, so the effective spring constant for the system of 4 shock absorbers is 25000 lbs/foot. 1. assume no damping and determine the period of oscillation of the vertical motion of the car. hint: g 32 f/sec2 t314 2. after 10 seconds the car body is 1 foot above its equilibrium position and at the high point in its cycle. what were the initial seconds. conditions? 2 0.4871 ft, and yt y(o,-0100x 0.487 ft. and y(0)- x ft/sec. 3. now assume that oil is added to each the four shock absorbers so that, together, they produce an effective damping force of - 6.93 ib-sec/ft times the vertical velocity of the car body. find the displacement y(t) from equilibrium if y(0)-0 ft and y( ft/sec. y(t)

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called