In a uniform circular motion map, what is always true? check all that apply.

a. the dots are different distances apart.
b. acceleration vectors point in the direction of motion.
c. velocity vectors are always perpendicular to the circle.
d. acceleration vectors point toward the center of the circle.
e. velocity vectors are the same length.

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.