An oil-filled radiator contains 8kg of oil circulating slowly through the heating element near the bottom. When the electrical power consumed is 800w , the maximum temperature difference of the oil inside the heater remains constant at10*c .the specific heat capacity of the oil is 2000J kg*(-1)c*(-1)
Question:
a)when the oil circulates once through the heating element .How much energy is released to the surroundings?
b) the manufracturer claims that the radiator is 100% efficient .Do you agree?
c)how much internal energy is produced by the heater each second?
d) how long does it take for the oil to circulate once through the heaing element?
thx~
圖片參考：http://imgcld.yimg.com/8/n/HA07554843/o/701106040060613873455640.jpg
更新1:
回覆JeanasisSs I am asking some question about physic but u give me the website about shoping , and ask me to give you 20 marks , are you joking?
更新2:
sorry , the answer of a) is 160 000J , d) is 200s I want the step !!!!!!!!!
