If a boulder has a mass of 50 kg and a potential energy of 490 j what is the height of the boulder

Near the end of a marathon race, the first two runners are separated by a distance of 41.6 m. The front runner has a velocity of 3.4 m/s, and the second a velocity of 4.85 m/s.

Check all that are functions of the cerebellum A. Receives sensory plans for movements B. Acts as the "principal" of unconscious physical actions by regulating functions of motor pathways C.

When did multicellular life begin to appear on earth?

The atomic mass of gold is 0.197 kg/mole. how many moles are in 0.566 kg of gold.

Within a book on a desk, there are billions of forces pushing and pulling on all the molecules. why is it these forces never by chance add up to a net force in one direction, causing the book to accelerate "spontaneously" across the desk?

What change occurs to the mass of an object when an unbalanced force is applied to it? A. The mass increases. B. The mass decreases. C. The mass remains the same. D. The mass reduces to zero. E. The mass changes by an indeterminate amount.

The equilibrium price will rise, but equilibrium quantity may increase, decrease, or stay the same if a. demand increases and supply decreases. b. demand increases and supply increases. c. demand decreases and supply increases. d.

The nearest large galaxy to our own is about 2.5 million light-years away. how many meters is that

An automobile travels on a straight road for 25 km at 32 km/h. it then continues in the same direction for another 25 km at 64 km/h.

Why is it important for engineers to design bumper cars safely