If an object that was held steady (0 speed) and then dropped, how many meters would it fall in one second?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?