14. ***A gas inside a cylinder expands from 4.2 L to 8.7 L at a constant pressure of 5.1 x 10^3 Pa. What work is involved in this process? REMEMBER! You must convert L to m^3!!! 1 L = 0.001 m^3.

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?