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

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?