Aroller coaster reaches its maximum potential energy when it

a. is sitting at the top of a hill.
b. reaches the bottom of a hill.
c. rounds a curve.
d. starts up a hill.

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

What type of electromagnetic radiation has a shorter wavelength than blue light