When you do physical exercise, the energy stored in the carbohydrate, fat, and other molecules in the cells of your body is converted to energy of motion.
a.
solar
b.
chemical
c.
heat
d.
wind

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.