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April 20, 2014

April 20, 2014

Posted by **Andy** on Wednesday, December 2, 2009 at 5:24pm.

A. Find the total work done by gravity on the satellite fragment.

B. Find the amount of that work converted to heat

Thanks for the help on the water flow problem. I thought that we had to use the given velocity so no problems there. This problem is really giving me trouble I assume that I'm supposed to use PE=-G(Me)(m)/R to start but not sure

physics Bob Pursley plz help - bobpursley, Monday, November 30, 2009 at 5:05pm

Find the total PE available

PE=GMm/Re (1/2.019 -1/1)

Now, that has to be the work done

heat+finalKE=work done

ok so I posted this a couple days ago and I'm still having trouble. This is what I am doing

PE=(GMm/1.019Re)+(GMm/Re)

please help I'll be all done with physics for the semester if I can just finish this one problem!

- physics bobpursly help still having trouble -
**bobpursley**, Wednesday, December 2, 2009 at 5:28pmchangeofPE=(GMm/1.019Re)+(GMm/Re)

is correct. Now subtract the final KE from that, and then the remainder must be the heat given off.

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