Awell-insulated copper rod (thermal conductivity of 388 w/m k) is 50 cm long and has a cross-sectional area of 10 cm/- one end of the copper rod is in contact with a block of ice at 0 c, the others end is in boiling water are 100 c. heat of vaporization for the saturated steam at 100 c is 2257 kj/kh. the heat of fusion for ice at 0 c is 334kj/kg. how much ice melts in 1 min? if the block had a mss of 4 kg, how long would is take to raise the temperature of 6 c? the specific heat of water is 4.18 kj/kg c.

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

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