A girl weighing 25kg while dancing exerts a force of 250N on the floor. Her Feet cover an area of 80 cm2 on the floor. The pressure exerted by the girl on the floor is ___
a. 2000N/cm2
b. 500000N/cm2
c. 200000N/cm2
d. 2000N/m2

Stion 13 of 20 : select the best answer for the question. 13. if a certain mass of mercury has a volume of 0.002 m3 at a temperature of 20°c, what will be the volume at 50°c? a. 0.002021624 m3 b. 0.004021624 m3 c. 0.000010812 m3 d. 0.002010812 m3

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

The two required components for a generator are