Because the specimen is very small with a light microscope
Answer:
Work = F * s where s is the distance F moves
Since F is stationary, in this case, "no work" is done by either person
Stairs don't have any power at all. All the energy used to climb them
has to come from your muscles.
An elevator gets its power from the electric motors that lift it. All YOU
have to do is stand there and look around.
All of this is a big part of the reason why elevators have become so
popular, and why no buildings with more than a few floors were built
before elevators were invented.
Both planets are similar in shape and have a rocky surface. Not sure about the phases though
Convection currents occur in the magma drive plate tectonics. Here heat is generated from the radioactive decay of elements in the interior of the Earth, creating magma in the asthenosphere.
