Answer:
A capacitor is an electronic component that stores and releases electricity in a circuit. It also passes alternating current without passing direct current. A capacitor is an indispensible part of electronic equipment and is thus almost invariably used in an electronic circuit.
Answer:
The average temperature is much warmer
Explanation:
The specific heat capacity of the substance is 
Explanation:
When an object of mass m is supplied with a certain amount of energy Q, its temperature increases according to the equation:

where
m is the mass of the object
is its specific heat capacity
is the increase in temperature of the object
In this problem, we have

m = 50 g

Therefore, we can solve for
to find its specific heat capacity:

Learn more about specific heat capacity:
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The electrostatic force between two point charges is given by:

where

is the Coulomb's constant
q1 and q2 are the two charges
r is the distance between them
In our problem, charge 1 is

while charge 2 is

and their distance is
r=5.0 cm=0.05 m
So, the electrostatic force between them is

And the negative sign means the force is attractive, because the two charges have opposite sign.