Gravitational forces are stronger over shorter distances, and
weaker over longer distances. That's a big part of the reason
why our bodies are attracted to the Earth with more force than
we're attracted to Jupiter, for example.
The force doesn't just get weaker in proportion to the distance.
It gets weaker in proportion to the SQUARE of the distance.
The new rotational speed of the combined system is 32 rad/s
<u>Explanation:</u>
Given-
Moment of Inertia, I = 8 kg m²
speed of rotation, ω = 4 rad/s
Mass of the lump = 1 kg
distance = 1 m
New rotational speed = ?
We know,
When the lump is dropped on the rotating disc then the angular momentum remains conserved.
Angular Momentum of the disc, Lₐ = Iω
Angular momentum of the lump, L ₓ = mvR
Since the angular momentum remains conserved,
Lₐ = Lₓ
8 X 4 = 1 X v X 1
New rotational speed, v = 32 rad/s
Therefore, the new rotational speed of the combined system is 32 rad/s.
Answer:
The electrical field in the region between the plates is 10,000 V/m.
Explanation:
Given;
potential difference between the two parallel plates, V = 100 V
distance between the two parallel plates, d = 1 cm = 0.01 m
The electrical field in the region between the plates is given as;
E = V / d
where;
E is the electrical field in the region between the plates
E = (100) / (0.01)
E = 10,000 V/m
Therefore, the electrical field in the region between the plates is 10,000 V/m.
Answer:
0.000000009006 or 9.006 x 10^-9
Explanation:
0.0000038 x 0.00237 = 0.000000009006 or 9.006 x 10^-9