Illustrate the crowbar protection for silicon controlled rectifier
1 answer:
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Liquid Hydrogen is the fuel used by rockets.
Explanation:
- Liquid hydrogen which can be chemically denoted as "
" is often considered as the significant fuels for rocket.
- However rocket in its lower stages uses fuels such as Kerosene and oxygen where as in the higher stages such as second and third stages it uses liquid hydrogen.
- Liquid hydrogen is known to easily cool the nozzle and then also other parts of the rocket before mixing with the oxidizer such as the oxygen.
- Thus liquid hydrogen helps in preventing nozzle erosion and also reduces combustion chamber.
- Liquid hydrogen one the other hand is very expensive as 384,071 gallons of it will cost approximately $376,389.58 .
Thus liquid hydrogen is effectively used as a fuel for rocket.
Answer:
I=0.3636
Explanation:
See the attached picture for explanation.
Answer:2058.992KJ
Explanation:
Given data
Mass of object=521kg
initial velocity=90m/s
Final velocity=14m/s
kinetic energy of body is given by=
change in kinectic energy is given by substracting final kinetic energy from initial kinetic energy of body.
Change in kinetic energy=
Change in kinetic energy=
Change in kinetic energy=2058.992KJ