<em>the</em><em> </em><em>two</em><em> </em><em>boa</em><em>r</em><em>d</em><em> </em><em>group</em><em> </em><em>of</em><em> </em><em>energy</em><em> </em><em>are</em>
<em>(</em><em>1</em><em>)</em><em> </em><em> </em><em>pte</em><em>ntial energy</em>
(2) kinetic energy
Explanation:
the explanation of ptential is =(energy that is s
stored).
the explanation of kinetic energy is =(the energy of moving objects).
Explanation:
<u>Hydrogen is used as fuel in automotives . It yields very high energy on combustion. It has great energy density by weight but poor energy density by volume. This is because Hydrogen is a very light gas, approx. 11 times lighter than normal air.</u> Hence it would require large volume of container to store it at normal atmospheric pressure conditions. That is why it is compressed using external energy to increase its density and decrease the volume needed for storage . So it becomes portable.
Only problem in this approach is that it utilities about 20% energy of the Hydrogen's energy potential to compress it . But this method proves cost effective as it reduces the overall weight of the container and also gives space to vehicles .
Answer:
The plates converge together to form mountains and volcanoes because when the plates push against each other, the only place for them to go is up to form these landscapes.
