Answer:
TRUE
Explanation
Nuclear fission is the process that provides energy to generate electricity in nuclear power plants.
Nuclear fission involves the radioactive decay of a heavy nucleus spontaneously. Such a nucleus a disintegrates into lighter nuclei and several neutrons. This reaction is a nuclear reaction and it is accompanied with a large release of energy. Each of the neurons produced further reacts with new nucleus to give newer atoms. This drives a series of chain reactions. With each reaction comes the release of large amount of energy.
The energy that results from a nuclear reaction far exceeds those derieved from chemical ones. The spontaneous decay of a nucleus helps produce energy.
The most commonly used fuel for most reactors is uranium. Uranium occurs naturally and can easily by mined.
The energy produced is channelled to drive a turbine system. Water becomes heated to steam, the steam helps to do work by turning turbines connected and designed into a magnetic field. Electricity is therefore induced by this process.
Nuclear fusion on the other hand involves the combination of small atomic nuclei to form larger ones. This process releases huge amount of energy. The energy that accompanies a fusion reaction far exceeds those of a fission reaction. Nuclear fusion is the process at work in the sun, the only star in our solar system.
Answer:
1.2 x 10¹¹ kgm²/s
Explanation:
m = mass of the airplane = 39043.01
r = altitude of the airplane = 9.2 km = 9.2 x 1000 m = 9200 m
v = speed of airplane = 335 m/s
L = Angular momentum of airplane
Angular momentum of airplane is given as
L = m v r
Inserting the values
L = (39043.01 ) (335) (9200)
L = (39043.01 ) (3082000)
L = 1.2 x 10¹¹ kgm²/s
Physics is not a strong subject for me, but I am almost 100% sure the answer is C.
Hope this helps!!
ΔU =
-Wint
Consdier the work of of
interaction is W =m*g*h - equation -1
and the Potential energy U.
Final Potential energy Uf =0
, And the Initial Potential Energy Ui =m*g*h
<span>Now we will write the
equation for a Change in Potential energy ΔU,</span>
ΔU = Uf
- Ui
= 0-m*g*h
<span> ΔU = -m*g*h --Equation 2</span>
Now compare the both equation
<span>Wint = -ΔU</span>
we can rewrite the above
equation
ΔU =
-W.
<span>So our Answer is ΔU = -W. .</span>
<span> </span>
Answer:
10 rad/s
Explanation:
The gears have the same linear speed.
ω₁ r₁ = ω₂ r₂
(25 rad/s) (2R) = ω (5R)
ω = 10 rad/s
