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Sagot :
If 56.6J = 60%,
then 56.6/0.6 = 94.3333 J = 0.0943... kJ
The rest of the information (mL and temperature change) isn't needed for the answer...
then 56.6/0.6 = 94.3333 J = 0.0943... kJ
The rest of the information (mL and temperature change) isn't needed for the answer...
ANSWER: 94.33 J
EXPLANATION
I'm assuming this is a multi-part question as most of these values aren't needed for this specific question as if we know that 56.6 J is needed but the heater only uses 60% efficiently, 56.6 is 60% of the heater's total required value to raise this amount of water by this much.
Simply multiply up:
60% = 56.6
⇒ 10% = 9.4333
⇒ 100% = 94.33333.... J
(although we cannot have recurring decimals in Physics so stop at a certain point and mention the number of decimal places/significant figures)
EXPLANATION
I'm assuming this is a multi-part question as most of these values aren't needed for this specific question as if we know that 56.6 J is needed but the heater only uses 60% efficiently, 56.6 is 60% of the heater's total required value to raise this amount of water by this much.
Simply multiply up:
60% = 56.6
⇒ 10% = 9.4333
⇒ 100% = 94.33333.... J
(although we cannot have recurring decimals in Physics so stop at a certain point and mention the number of decimal places/significant figures)
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