Answer the following question and make sure to give a full description to how you got your answer (ex. make sure to use blank rule in order to get blank answer) urgent
a car of mass 1800 kg moving with a speed at 90 km/hr is brought to rest by the application of disc brakes. find the average increase in temperature if the brakes if each of the four brakes has a mass of 4.5 kg. take the specific heat capacity of the brake material to be 680 j/kg degree c, and assume that all the kinetic energy, 562.5 kj, is changed into heat energy in the brakes.

Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*