Each electron provides a charge of -1.602 × 10^-19 coulombs.
If there are 8.51 × 10^-6 extra electrons:
1 electron ____________ -1.602 × 10^-19 coulombs
8.51 × 10^6 electrons___x = -1.602 × 10^-19*8.51 × 10^6/1=-1.32×
10^-12 coulombs
So the extra electrons provide a charge of 1.32× 10^-12
coulombs.
So the net charge is -1.32× 10^-12 coulombs (there are more
electrons besides those extra electrons, but there are also protons, so they
don’t affect the net charge – the other electrons just compensate the charge of
the protons).
Answer:

Explanation:
Let solve the differential equation by separating corresponding variables:

The solution of this equation is:

The explicit form of the temperature as a function of time is:


The value of the integration constant is:

The complete expression is:

Answer:
Testable
Explanation:
Because don't you have to test the question to see if its right so It has to be testable
The quantity that has a magnitude of zero when the ball is at the highest point in its trajectory is
the vertical velocity.
In fact, the motion of the ball consists of two separate motions:
- the horizontal motion, on the x-axis, which is a uniform motion with constant velocity

, where

- the vertical motion, on the y-axis, which is a uniformly accelerated motion with constant acceleration

directed downwards, and with initial velocity

. Due to the presence of the acceleration g on the vertical direction (pointing in the opposite direction of the initial vertical velocity), the vertical velocity of the ball decreases as it goes higher, up to a point where it becomes zero and it reverses its direction: when the vertical velocity becomes zero, the ball has reached its maximum height.