Answer:
Part a)

Part b)

Explanation:
As we know that the energy of capacitor when it is not connected to potential source is given as

As we know that initial energy is given as

now we know that capacitance of parallel plate capacitor is given as

now the new capacitance when distance is changed from 3.80 mm to 1.45 mm



Now the new energy of the capacitor is given as


Part b)
Now if the voltage difference between the plates of capacitor is given constant
now the energy energy of capacitor is


now when capacitance is changed to new value then new energy is given as



Answer:
91.64 km
91.64 km high material would go on earth if it were ejected with the same speed as on Io.
Explanation:
According to Newton Law of gravitation:

Where:
G is gravitational constant=
For Moon lo g is:

According to law of conservation of energy
Initial Energy=Final Energy


For Jupiter's moon Io:
Velocity is given by:

For Earth Velocity is given by:

Now:





91.64 km high material would go on earth if it were ejected with the same speed as on Io.
1.) the objects have the same temperature
this is the answer because thermal equilibrium is when two substances touch and the temperature becomes the same.
Answer: C Heat Transfer, E Addition of Volatiles and A Decompression
Explanation:
- Decompression melting takes place within Earth when a body of rock is held at approximately the same temperature but the pressure is reduced.
Answer:D.Refractive Indez
Explanation:
It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".