1. sometimes in very cold places water pipes burst. give reason why.

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.