A una temperatura de 22 °C una varilla de hierro tiene una longitud de 7 m. Calcula cuál será su longitud al aumentar la
temperatura a 32 °C. Dato: are 11.7 x 10-6°C-1

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not

Are formed where bumps from two surfaces come into contact ?