Answer:
Potential energy is when something isn't in motion. It's just sitting there. Kinetic energy is when an object is in motion.
Explanation:
So if you like, blow up a balloon, you have potential energy in that balloon. When you let it go, it flys everywhere using kinetic energy.
Answer:
It could be some kind of bug.
Explanation:
I would suggest you go to the app store or wherever you got Brainly and look through the reviews of the app. You just might an answer to your problem.
Perhaps consider deleting and redownloading the app. (Of course, this is assuming you are using Brainly on your phone and that you haven't done so already.)
Given :
A tourist drops (from rest) a ping pong ball from the top of the tower, which has a height of 174 meters.
To Find :
How long does it take for the ping pong ball to hit the ground ?
Solution :
We know, equation of motion of object doing free fall is :
....1)
Here, g = 9.8 m/s² ( acceleration due to gravity )
Also, u = 0 m/s ( its free fall )
Putting these values in equation 1), we get :
Therefore, ball will take 5.96 s to hit the ground.
The magnitude of electric field is produced by the electrons at a certain distance.
E = kQ/r²
where:
E = electric field produced
Q = charge
r = distance
k = Coulomb Law constant 9 x10^9<span> N. m</span>2<span> / C</span><span>2
Given are the following:
Q = </span><span>1.602 × 10^–19 C
</span><span>r = 38 x 10^-9 m
Substitue the given:
E = </span>
E = 998.476 kN/C