If a 2kW heater is immsersed in 1kg of water at 12 oC and is switched on for 10 minutes,find
a)tha amount of energy supplied to the water,
b)the amout of water boiled away.
Form3 Physics(today)
2009-01-01 10:56 pm
回答 (1)
2009-01-01 11:06 pm
✔ 最佳答案
a) E=Pt=(2x10^3)(10x60)
=1.2x10^6J
b) E=mc?T
=1(4200)(100-12)
=3.696x10^5J
latent of the ......=(1.2x10^6-3.696x10^5)/the amount of water mass
the amount of water mass=.......
I think the latent is given to you.
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