I will give u 50 points if u answer this and get it right Calculate the kinetic energy of a 50 kg cart moving at a speed of 6.9 m/s.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Acar of mass 800kg is moving at a speed of 2.2m/s.

Thermal radiation gets its name because