Explain why adding oil to the moving parts of a machine can increase its efficiency

Water at 1 atm pressure is compressed to 430 atm pressure isothermally. Determine the increase in the density of water. Take the isothermal compressibility of water to be 4.80 * 10-5 atm-1.

The sun generates both mechanical and electromagnetic waves. Which statement about those waves is true? ОА The mechanical waves reach Earth, while the electromagnetic waves do not. ОВ.

What is an object that allows some electrons to go through it - current - resistor - generator

Does the mass of an object ever change ?

After world war 2, why did the Soviet Union consider the United States a threat?

A 0.25 kg hockey puck is sliding along the ice with an initial velocity of 5 m/s when a player strikes it with his stick, causing it to reverse its direction and giving it a velocity of 30 m/s.

The physiological aim of drive reduction theory is

You are caring for a person who was involved in an automobile collision. The woman is complaining of pain in her abdomen, nausea and extreme thirst. She also is breathing rapidly. Which of the following would you suspect?

A fountain of water and steam that erupts from the ground

A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over the edge of a building 120 ft high. how much work is done (in ft-lb) in pulling half the rope to the top of the building?