A(n) 1.3 kg mass sliding on a frictionless surface has a velocity of 7.6 m/s east when it undergoes a one-dimensional elastic collision with an unknown mass that is initially at rest. After the collision, the velocity of the 1.3 kg is 1.1 m/s west. What is the unknown mass?

Explain vector addition, triangle method and parallelogram method

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?