Sara tells michael she is 160 centimeters tall, while michael says

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

What are similarities and differences between refraction, reflection, diffraction and absorption?

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.