Which property of a filled balloon will be unchanged on the moon where there’s no air and less gravity? a) mass b) weight c) volume d) density

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).