How many butter, which has a usable energy content of 6.0 Cal/g ( = 6000 cal/g), would be equivalent to the change in gravitational potential energy of a 64 kg man who climbs 7.07 km? Assume that the average g for the climb is 9.80 m/s^2.

A pitched ball is hit by a batter at a 45degrees angle and just clears the outfield fence, 98m away. Assume that the fence is at the same height as the pitch and find the velocity of the ball when it left the bat. Neglect air resistance.

Order these clouds from highest (1) to lowest (3) : stratus alto cirrus

A motorcycle starts from rest and has a constant acceleration. In a time interval t, it undergoes a displacement x and attains a final velocity v. then t is increased so that the displacement is 3x. What final velocity does the motorcycle attain?

Which statement about the effects of medium on the speed of a mechanical wave is true? A. Medium has no effect on the speed of a mechanical wave. B. A mechanical wave generally travels faster in solids than liquids. C.

If the designers of submarines do not appropriately account for hydrostatic pressure, A) the pressure could crush the submarine B) the submarine can reach unlimited depths. C) the submarine can be used as long as no people are in it.

In the study that the FBI did on examining the physical characteristics of hair, what percentage of the "matches" were not really matches at all?

Evaporation only occurs at the surface of a liquid

Which of these substances has the highest pOH? 0.10 M HCl, pH = 1 0.001 M HNO3, pH = 3 0.01 M NaOH, pH = 12

A climber pulls herself 8 meters upwards with a force of 150 Newtons. If it takes her 16 seconds to cover the 8 meters, how much power is she using? A. 40 W B. 55 W C. 70 W D. 75 W

How is volume calculated directly and indirectly