The electric potential energy is 
Explanation:
The electric potential energy stored in a capacitor is given by the equation

where
Q is the charge stored in the capacitor
is the potential difference between the plates
For the capacitor in this problem, we have
is the charge
is the potential difference
Substituting, we find the potential energy:

Learn more about capacitors:
brainly.com/question/10427437
brainly.com/question/8892837
brainly.com/question/9617400
#LearnwithBrainly
Answer:
200J
Explanation:
work done = force x distance
= 20 x 10
= 200J
The force applied to the spring is the weight of the object that compresses it, so it is equal to:

Because of this force, the spring compresses by

. Using Hook's law,

,
since we know the intensity of the force (the weight W) and the compression of the spring, x, we can find k, the spring constant:
High task repitition, forceful exertions, repetitive or sustained awkward posture
Let the rise in temperature be 
The expansion in length due to change in temperature is given by the expression lαΔt , where l is the length, α is the coefficient of linear expansion, Δt is the change in temperature.
Here l = 93 m, α =
, and Δt = 
So expansion in length = 93*
*5 = 0.007905 m = 
So order of magnitude in change in length = -3