Sound is faster than light that is why we hear thunder before we see lightning
1 answer:
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A. momentum = mass x velocity
b. kinetic energy = 1/2 x mass x velocity^2
Although total momentum is conserved, total kinetic energy is not necessarily equal. It’s because Jay acted a force on the skateboard and increased the energy of the system.
b. kinetic energy = 1/2 x mass x velocity^2
Although total momentum is conserved, total kinetic energy is not necessarily equal. It’s because Jay acted a force on the skateboard and increased the energy of the system.
Answer:
The permittivity of rubber is
Explanation:
From the question we are told that
The magnitude of the point charge is
The diameter of the rubber shell is
The Electric field inside the rubber shell is
The radius of the rubber is mathematically evaluated as
Generally the electric field for a point is in an insulator(rubber) is mathematically represented as
Where is the permittivity of rubber
=>
=>
substituting values