Answer:
E
Explanation:
A vector is a physical quantity that has magnitude and direction while a scalar is a physical quantity that has magnitude only
*electric potential is a scalar quantity because it only has magnitude
*electric field and electric force are vector quantities because they have magnitude and direction
Answer:
a) 
b) No
Explanation:
A) Because the electron is affected by an acceleration force in this case by the electric field, we can use the formulas of 2-dimension movement.
We will assume the electron missed the upper plate, so we need to calculate the time to travel all the way through the plate, that is:
so:
the electron experiences an accelerated motion in the vertical direction, so we can obtain the acceleration of the electron:
so:
now we can use the relation:
Now we can calculate the electric field:
B) Because the proton has the same charge but positive it will go in the opposite direction, so because we assume the electron didn't touch the plate, the proton won't.
Answer:
In Newton's Cradle there are N number of balls are suspended from the thread such that they all touch each other.
Now when we pull one ball apart and released then after the collision one ball on the other side moves up
Then in next time if we pull two balls from one side then after collision it will pull upwards exactly two balls on the other side after collision.
So here the number of balls on the other side is exactly same every time we pull the balls.
This is due to the conservation of momentum principle
As we know that all the balls are identical here then when we pull any number of balls on one side and then release them then after collision the momentum of the balls is transferred to same amount of the balls on the other side
Since there is no external force on this system so we can say that that this momentum conservation will exist for all cases and all number.
I really don’t get this give me a second
