A60 kg student is standing motionless. approximately how much force is the floor exerting on the student? a. 60 kg downward b.600 n upward c.600 n downward

The normal force is equal in magnitude and opposite in direction to the weight of the student.
W = m · g = 60 kg · 10 m/s² = 600 N ( downward )
N = - 600 N

B ) 600 N upward.

A. to determine if humans can explore mars safely

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).