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Answer:
The force of kinetic friction between the block and the floor is 2.4 N
Explanation:
The given parameters are;
The weight of the block = 8 Newtons
The velocity of the block = Constant velocity
Taking the kinetic friction for wood,
= 0.3, we have;
The normal reaction of the block on horizontal ground, N = The weight of the block = 8 N
The force of kinetic friction between ,
=
× N
Therefore, we have;
The force of kinetic friction between the block and the floor,
= 0.3 × 8 N = 2.4 N.
Answer:
The magnitude of the electric field is
in the r direction.
Explanation:
The equation of the electric field is given by:

Where:
- k is the Coulomb constant is

- q is the charge
- r is the distance from A to q
Therefore, the magnitude of the electric field is
in the r direction.
I hope it helps you!
Some of the energy is converted into heat. This is the main reason why electrical material gets hot when connected to a source. Therefore, your initial energy does not equal final energy. This does not violated energy conservation law because the energy is being converted so it is never lost.