Considere um circuito elétrico formado por uma bateria de 12 V e dois resistores idênticos associados em série. A corrente total do circuito é 3 A. Qual é o valor de cada resistência?

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Why is metal often used for cooking pan?