Earth has a radius of 6370 km what is earth's mass?

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Ascientific blank must be testable and capable of being proven false?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?