(35 ) a special airport truck is used to push a heavy airliner away from the terminal. the truck pushes with a force of 2000 lb for a distance of 150 ft. the mechanical work done by the ruck is
a. 30,000 ft*lb
b. 300,000 ft/lb
c. 300,000 ft*lb
d. 30,000 ft/lb

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

The heliocentric and the geocentric models of the solar system included these central principles

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.