Answer:
r₂/r₁ = 1.82
Explanation:
The electric field due to a point charge, has the following expression:
For a distance r₁, the magnitude of the electric field is 395 N/C, so we can solve for r₁², as follows:
r₁² = (1)
For a distance r2, the magnitude of the electric field is 119 N/C, so we can solve for r₂², as follows:
r₂² =
We can find the quotient r₂/r₁, from (1) and (2):
r₂/r₁ = = 1.82
Since P=E/t,
where P=power (W),
E=energy (J) and
t=time (s).
Just rearrange this formula to obtain E=P*t=5400*640=3456000 J.
Energy and work are very related since energy is defined like the ability of doing work. Actually work is also measured in J so the answer is the one above.
Work = 3456000 J
Answer:
Explanation:
Use that:
Then use the 2nd Newton's Law of Motion:
At x = 0.3 and y = 0.6, we can find the acceleration as:
(in SI unit)
Then the magnitude of the acceleration on that point is:
(SI Unit)