If a steam engine does 500 J of useful work, how much work is needed to be put in if the efficiency rating of 20%? Use your triangle,

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg