The atmospheric pressure is due to the

(a) sky above our head (b) air mass surrounding the earth

(c) gravitational force of sun and other planets. (d) mass of the earth

A fugitive tries to hop on a freight train traveling at a constant speed of 5.0 m/s. Just as a box car passes him, the fugitive starts from rest and accelerates at a=1.4 m/s^2 to his maximum speed of 6.0 m/s, which he then maintains.

Where did the rotational kinetic energy of the earth come from?

The second law of thermodynamics describes what phenomenon?

How know that rocks formed from the seafloor sediments deposited in the Amadeus basin were softer than the arkose sandstone

What happens to molecules when their kinetic energy decreases?

Compare and contrast the terms melting and freezing

A medical cyclotron used in the production of medical isotopes accelerates protons to 6.5 MeV. The magnetic field in the cyclotron is 1.9 T.

What is the speed of sound in a vacuum?

An object has 60 j of potential energy and 40 j of kinetic energy. then 10 j of the potential energy is converted into kinetic energy. how much work was done on the object?

At what height above earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?