One of the biggest problems to overcome with using nuclear fueled reactors is
and
it must be kept safe.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Avoltaic cell converts chemical energy to

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?