Answer:
0.12 kg
Explanation:
The amount of energy added is:
1000 W × (5 min × 60 s/min) = 300,000 J = 300 kJ
Heat to boil the water is:
q = mCΔT + mL
q = m (CΔT + L)
300 kJ = m (4.2 kJ/kg/K × (100°C − 30°C) + 2200 kJ/kg)
300 kJ = m (2494 kJ/kg)
m = 0.12 kg
Answer: The energy yield is 931.5MeV
Explanation: Please see the attachments below
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➷ A dry cell changes chemical energy into electrical energy.
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Answer:
It flows in one direction. It goes out the positive side and back into the negative side.
Explanation:
There are images that can help you understand better. I hope this helped a little :)