As the mass and distance between two objects decrease, so does the gravitational force exerted between them. true or false
1 answer:
You might be interested in
Answer:
0.24 seconds
Explanation:
The signal will reach the computer at light speed =
Distance between the satellite and the computer =
Since, the bodies have no acceleration relative to each other we use the following formula
Time = Distance / Time
One way delay would be at least 0.12 seconds.
But when you click on a link to open a website this signal has to be first sent to the satellite then the satellite would have to send the required signal back to the computer.
Hence, the minimum time delay would be 0.12+0.12 = 0.24 seconds
Answer:
a) E = ρ / e0
b) E = ρ*a / (e0 * r)
c) E = 0
Explanation:
Because of the geometry, the electric field lines will all have a radial direction.
Using Gauss law
Using a Gaussian surface that is cylinder concentric to the cable, the side walls will have a flux of zero, because the electric field lines will be perpendicular. The round wall of the cylinder will have the electric field lines normal to it.
We can make this cylinder of different radii to evaluate the electric field at different points.
Then:
A = 2*π*r (area of cylinder per unit of length)
Q/e0 = 2*π*r*E
E = Q / (2*π*e0*r)
Where Q is the charge contained inside the cylinder.
Inside the cable core:
There is a uniform charge density ρ
Q(r) = ρ * 2*π*r
Then
E = ρ * 2*π*r / (2*π*e0*r)
E = ρ / e0 (electric field is constant inside the charged cylinder.
Between ther inner cilinder and the tube:
Q = ρ * 2*π*a
E = ρ * 2*π*a / (2*π*e0*r)
E = ρ*a / (e0 * r)
Outside the tube, the charges of the core cancel each other.
E=0