Answer:
The energy stored in the solenoid is 0.18J
Explanation:
We need to obtain the inductance in order to calculate the energy:

The energy stored in the solenoid is given by:


Every object in the universe attracts every other object with a force which is proportional to the product of their masses and inversely proportional to the square of the distance between them. The forces along the line joining the centre of the two objects.
❍ Let us consider two masses m1 and m2 line at a separation distance d. Let the force of attraction between the two objects be F.
According to universal law of gravitation,

Also,

Combining both, We will get

Or, We can write it as,

Where, G is the constant of proportionality and it is called 'Universal Gravitational constant'.
☯️ Hence, derived !!
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Answer: yes wave are created by vibration because if there anit any vibration then the water cant move
Explanation:
Areas of rising air causes low air pressure areas and <span>Areas of sinking air are areas of high air </span>pressure