P = m v
250 = m5
250 = 5m
m = 50 Kg
Option C
Answer:
The divergence on the sensor shows the magnitude of the charges
Explanation:
This will increase as length increases since it is said to be proportional to the length. note that test charge is always positive and charge on the grid is positive as indicated (1 nC)
By Newton's Law of Universal Gravitation.
F = GMm/r²
Where F is Force of Gravitation, M = Mass of first object, m = mass of second object, r = distance of separation
From the formula, you can see that if the masses, M and m, increased, the value of F would definitely increase as well.
And if r increased the value of F would be reduced because you would be dividing by a bigger number, but when the value of r is decreased the value of F would be increased, because you would then be dividing by something smaller. Note the r is at the denominator of the formula.
So F would increase if there was increase in Masses and decrease in distance.
So the answer is C. a and b.
Answer: a hydraulic machine has water or air controlled by pistons that are airtight, water does great forces and air when compressed or squeezed to make things move, take a CAT machine for example (if you live in america, its those big yellow trebuchets or cranes) they use a piston for the arm and in front of those pistons you have mainly water (if your using a CAT machine) and those pistons push the water to and from your machines arm to create movement.
as you can see, in this picture, the CAT has hydraulics running against the arms of the machine