How do you get rid of depression?
2 answers:
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Answer : The correct option is, (d)
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of copper =
= specific heat of water =
= mass of copper = 120 g
= mass of water = 300 g
= final temperature of mixture =
= initial temperature of copper = ?
= initial temperature of water =
Now put all the given values in the above formula, we get:
Therefore, the temperature of the kiln was,
<h3>Answer:</h3>
- E≈2,5 eV
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λ=500 nm = 500·10⁻⁹ m
c=3·10⁸ m/s
h=6,63·10⁻³⁴ J·s = 4,14·10⁻¹⁵ eV·s
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E - ?
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