How do nuclear fusion reactions differ from nuclear fission reactions?
A. Nuclear fusion reactions convert all energy into mass.
B. Nuclear fusion reactions follow the law of conservation of matter.
C. Nuclear fusion reactions form lighter isotopes from heavier isotopes.
D. Nuclear fusion reactions form heavier isotopes from lighter isotopes.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db