convert the following into active voice :
1)the threes are being shaken by them for fruits.
anwer:
2)the enemies are being shot by the soldiers.
answer:
3)the clouds were being blown away by the wind.
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4)the rat has been killed by the cat.
5)He had been stung by a scorpion.
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6)something is being hidden by her.
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7)the money was stolen by someone.
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8)New crops are grown by the farmer.
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Answer:
Given :
Mass (m) = 5 kg
Specific heat of water (c) = 1 kcal/kg °C
Change in temperature (ΔT) = 100 − 20 = 80°C.
Find :
Heat energy (Q)
Solution :
Formula: Q = m c ΔT
Calculation:
☆ According to the principle of heat exchange,
Energy supplied to water = Energy gained by water
From the formula,
→ Q = 5 × 1 × 80 = 400 kcal
Hence,
Heat energy necessary to raise the temperature of the water is 400 kcal.
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Explanation:
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