A) \[9kg\]
B) \[\frac{4}{3}kg\]
C) \[\frac{3}{7}kg\]
D) \[\frac{3}{14}kg\]
Correct Answer: C
Solution :
Energy needed\[1\text{ }kWh=60\times 60\text{ }kJ\] \[=\frac{3600}{4.18}\] kcal The quantity of mass\[=\frac{3600}{4.18}\times \frac{1}{2}\] \[=430.6\text{ }g\] \[=\frac{3}{7}kg\]You need to login to perform this action.
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