What would be the velocitywhen a dog of 10kg and it's kinetic energy is 20J
2 answers:
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Answer:
The work done in bringing the plates together is 5.9 x 10⁻¹⁰ J.
Explanation:
Given;
potential difference between the plates, V = 10 V
length of each square side of the plates, L = 20 cm = 0.2 m
area of the plates, A = 0.2 x 0.2 = 0.04 m²
separation of the plates, d = 3 cm = 0.03 m
The work done in bringing the plates together is calculated as;
W = ¹/₂qV
Therefore, the work done in bringing the plates together is 5.9 x 10⁻¹⁰ J.
Answer:
k = 86,646,076.92 J
Explanation:
We know that:
K =
where K is the kinetic energy, I is the moment of inertia and W is the angular velocity.
First we have to find the I with the equation:
I =
where M is the mass and R the radius of the cylinder.
so:
I =
I = 365.04 kg*m^2
Now we replace all the data in the first equation as:
K =
K =
k = 86,646,076.92 J