Nuclear Fusion
Nuclear fusion is a type of nuclear reaction. In nuclear fusion, two or more than two lighter atomic nuclei combine to form a heavier nucleus. During this process, an enormous amount of energy is released. This energy is called nuclear energy. Nuclear fusion is the energy source of the sun and stars.
Fusion Bomb
A fusion bomb is also known as a thermonuclear bomb or hydrogen bomb which releases a large amount of explosive energy during a nuclear chain reaction when the lighter nuclei in it, combine to form heavier nuclei, and a large amount of radiation is released. It is an uncontrolled, self-sustaining nuclear chain reaction where isotopes of hydrogen combine under very high temperature to form helium. They work on the principle of operation of atomic fusion. The isotopes of Hydrogen are deuterium and tritium, where they combine their masses and have greater mass than the product nuclei, get heated at high temperatures, and releases energy.
why is it negative -45? Shouldnt it be positive?
![A stone is thrown from the top of the bldg upwd at an angle of 30° to
the horizontal with an initial speed of 20m/s. The height from which
the stone is thrown is 45m above the ground. (a) How long does it
take the stone to reach the ground? (b) What is the speed of the stone
just before it strikes the ground?
Vxi = V; Cos0; =(20m/s)cos300 = 17.3m/s
Vyi = V;sin0; = (20m/s)sin300 =10.0m/s
Y; = y; +Vyjt + (1/2)a, ²
-45m = 0 +(10m/s)t +(1/2)(-9.8m/s2)t2
t=4.22s
V; = 20.0 m/s
0;= 30.0°
0.
Vyf = Vyi + a,t
=10m/s+(-9.8m/s²)(4.22s)
45.0 m
=-31.3m/s
V=vf + v3f
[(17.3m/s)²+(-31.3m/s)²]!2 = 35.8m/s
D D D D D D O D O](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F10059931-72e5-4a9b-ab2b-c23bdb3bdc41%2F62123c8d-a350-4b2c-847f-303d952c2f77%2Foq8qogr_processed.png&w=3840&q=75)
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