A small .40 kg cart is moving back and forth along an air track between two bumpers that are 2 m apart on the air track with a constant speed of .50m/s by treating the cart as a quantum particle, estimate the value of the principle quantum number that corresponds to its classical energy

when earth is in rotational motion around the sun,it displaces from its place.

when a ball is placed on an inclined surface it does both the rotational and circular motion.

explanation:

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this