The angle of incidence of light ray
incicient on equilateral triangle prism
is 40° if the ray is just totally
reflected at the other face of the
puism then find the refractive
index of prism .

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (