Waves of energy made by vibrations- requires a medium such as air, water, or solid to travel A. Amplitude
B. Volume
C. Noise
D. Sound Waves

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.