Answer:
a) y = 0.0075 m
b) W = 1.569 J
Explanation:
See attachment for the solution
Answer:
The final stored energy will become half.
Explanation:
We know that stored energy in the capacitor is given as

C=capacitance
V=Voltage difference
E=Energy

d=Distance between plates
A=Area

If the distance between plates get double ,say d' = 2 d
Then stored energy



Therefore the final stored energy will become half.
Maybe friction..? my best answer.
Answer:

Explanation:
It is given that,
Mass of the clock, m = 108 kg
Force acting on it when it is in motion, 
After the clock is in motion, a horizontal force of 521 N keeps it moving with a constant velocity, F' = 521 N
It is assumed to find the coefficient of between the clock and the floor. The force of friction is given by :




So, the coefficient of static friction between the clock and the floor is 0.6. Hence, this is the required solution.
Answer:

Explanation:
From the question we are told that:
Weight 
Altitude
Let
Radius of Earth 
Gravity 
Generally the equation for Gravity at altitude is mathematically given by


Therefore
Weight at sea level


Weight at 6.33 altitude


Therefore


