# Compare the visible part of the ear to a satellite dish in terms of form and function.

I will be happy to critique your thinking on this.

bobpursley? You are of no help to me on any of this! If I want you to "critique my thinking" I was ask you to, but no where in my question did I ask you to!

Liz,

So many students are not experts at finding information on the www (perhaps not their fault). They simply don't know how to do an advanced search. I feel if you don't want to give an answer that it is best to give a website. This makes the student dig a bit. It also, I feel, makes them feel helped enough they can't really complain bitterly. Albiet, no system is without drawbacks.

Lead is a soft, dense metal with a specific hear of 0.028 kcal/kgcelcius, a melting point of 328 degrees celcius and a heat fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0kg sample of lead with a temperature of 20 degrees celcius?????

calculate the potential energy of an object that has a mass of 110 kg and is 15 m high?

calculate the potential energy of an object that has a mass of 0.056 kg and is 150 m high?

calculate the potential energy of an object that has a mass of 15 lbs. and is 15 ft. high?

calculate the potential energy of an object that has a mass of 1556 lbs. and is 0.5 ft high?

How is any of this done?

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