Explanation:
Here,
Given,
Mass(m)=40 kg
Gram=9.8m/s
Now,
Weight=m x g
or, weight= 40x9.8
=392.0
Hope you have understood
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Answer:
60.4 J
Explanation:
The work done by the gas is given by:
where
p is the gas pressure
is the final volume of the gas
is the initial volume
We must convert all the quantities into SI units:
So the work done is
Answer:
= 2
Explanation:
During nuclear fusion, two lighter nuclei of elements combine to form heavy nucleus and also energy is released;
During the process of hydrogen fusion a nucleus of deuterium is formed from two protons with emission of a neutrino.
In this case deuterium fuses with hydrogen nuclei to form helium-3 and also release energy.
That is;
2/1 H + 1/1 H = 3/1 He + energy
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Whenever a scientific observation is made, it has to be verified and its interpretation over time may change due to understanding of the specific phenomenon. Scientists do not alter the observation in any way; instead, explanations are presented to fit the observations as best as possible.</span>
