The piezoelectric effect, when generating ultrasound waves, involves the conversion of:
a. chemical energy to mechanical energy.
b. electrical energy to potential energy.
c. kinetic energy to electrical energy.
d. electrical energy to mechanical energy.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Building glycogen from glucose molecules is an example of