The electrostatic force of attraction or repulsion is can be found as follows,
let us consider 2 bodies in gravitational field of earth. Let the distance between those two bodies is equal to r meters. The charge on the first body is Q1 and charge on second body is Q2.
By columbs force, <u>F </u><u /><u>α Q1×Q2</u><u>
</u> r²
F=<u>k Q1×Q2 </u> where k-gravitational constant.
<u /> r²
Ask me, if you have any doubt regarding this.
The answer would be C.30J
Answer:
The runner's acceleration as she sped up to the finish line is 0.95m/s²
Explanation:
Acceleration is the change in velocity of a body with respect to time. It is expressed as;
Acceleration = change in velocity/time
Change in velocity = final velocity - initial velocity
Acceleration = final velocity - initial velocity / time
Given initial speed = 8.0m/s
Final speed = 9.9m/s
Time taken = 2.0s
Acceleration = 9.9-8.0 / 2.0
Acceleration = 1.9/2
Acceleration = 0.95m/s²
Answer:
I already know the first one is electromagnetic but I don't know the second one sorry
Explanation:
