If an object is moving at constant speed, it’s speed . A. Changes small amounts
B. Increases then decreases
C. Decreases then increases
D. Does not change

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

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

The energy produced as a result of this flow of electrons from atom to atom is called