The amount of energy needed is 110 calories. We know this by dong the following:
<span>Q=20×0.11×<span>(75−25)</span></span>
<span>⇒Q=20×0.11×50</span>
<span>⇒Q=110<span> cal
Bu doing this you have the required heat represented as Q that is supposed to raise the temperature of fork that will be equivalent to the mass multiplied by the specific heat and also by the change in temperature</span></span>
The right answer to 1b is 1 5/8 and the right answer to number 1e is 1 3/7. The way I solved this was by starting out adding two fractions at a time...
1b). 5/8 + 5/8 + 3/8
5/8 + 5/8 = 10/8 or 1 1/4
10/8 + 3/8 = 13/8 or 1 5/8.
1e). 5/7 + 1/7 + 4/7
5/7 + 1/7 = 6/7
6/7 + 4/7 = 10/7 or 1 3/7
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I divided 8745 by 8 and got 1005 so i would say 1000
