Tim is pushing a heavy box across the floor. He is using 300N of force and can accelerate at 2m/s/s. What is the mass of the box? -298 kg
-600 kg
-0.006 kg
-150 kg

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

i don't understand. explain it clearly

i think the answer is a and b

i wish you luck