A box with a weight of 100 N is at rest. It is then pulled by a 50 N horizontal force. Does the box move if the coefficient of static friction is
0.4? If it does move, and has a coefficient of kinetic friction of 0.2, what
is the Net Force acting on this object?

The answer is A i took the test make me brainlest

Explanation:

he made 11 calls in one day

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.