Few Physics questions.

Q.
Are there waves which travel faster than light?

Q.
Are there clock not affected by relativity ?

Q.
Is Time an electromagnetic effect? Becaz it all depend on EM waves. And humans can't feel anything except electromagnetic effect.

Q.
Is gravity also a part of electromagnetism, as the speed of gravitational waves is same as the EM waves?

Can frictional force accelerate a stationary object as it deaccelerate?

If we can design an object with such a surface full of black and white stripe.....
Then it will get more force on one side.

Think ourself.

Yes its possible.

Is our universe loosing energy?

I think yes.
At the boundary of our universe we are radiating lots of energy into nothing, i.e. outside our universe. This radiated energy will never come back.

Tidal energy. What will happen if we keep using tidal energy for very long? Moon will move away or will come close?

Will high Vx will change Vy? Can we change velocity in a direction without applying force in that direction?

I guess Yes.

as very high Vx will increase V, so will the mass be increased, becaz of relativity, so to keep Py constant Vy have to reduce as we know momentum is =M.V.

Can a charge apply force on itself?

I think Yes.

As we know two charges interact using photons. Photos is em wave and travel at speed of light.
But em wave travel aat different speed in different medium.
So we can plan a system such that the em wave will travel through the medium at a speed slower than the speed of light and the charge will travel outside the medium at higher speed. And the charge will interect with its own photon and will feel force.

Is it possible?

What is spark?

Sparks are the bright glows due to tiny masses of matter heated to extremely high temperature. It could be a small amount of air in between two electrodes held at high enough electrical potential difference so as to heat it by the current, it could be flying mass of specks of metal particles in a sparkler heated by chemical burning, it could be a flying splinter resulting from the striking of two metallic bodies against each other, or it could be a small sized particle separated from a large body of stone locally heated by friction with another object. In all these cases and more, one observes a flying spark glowing bright.