Aheat exchanger is used to cool oil from 150°c to 40°c at a rate of 2 kg/s. the oil is cooled using water that enters at 22°c and at a rate of 1.5 kg/s. if the specific heat of the oil is c, = 2.20 kj/kg k and that of water is c 4.18 kj/kg k, determine the outlet temperature of the water in °c

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

An object's buoyant force and weight mean the same thing.a. trueb. false