Mechanics | Relativity Answers

There is a box of chocolates and an apple on the table in the train. Why did the apple roll back (with regard to the train) and the box of chocolates remained in place when the train began its motion?

In how many times will the oscillation frequency of a simple pendulum change if the length of the thread is increased 3 times?

Two bodies of equal volume — made of steel and lead - move with identical velocities. Compare the impulses of these bodies.

Why does a body thrown on the Moon appear to be in state of complete weightlessness during the flight and why can the same body but on the Earth be considered weightless only approximately?

After a car is driven for some distance, why does the air pressure in the tires increase?

Why doesn't the boat move from the place when a person in it presses down on the side and why does it begin to move, if a person goes out of the boat and pushes it with the same force?

Compare the ingestion of a light signal sent from the rocket, if:
a) the rocket moves away from the observer,
b) the rocket is approaching the observer.

At what ratio of forces, which act on a bubble rising from the bottom of the reservoir, does the motion of the bubble become uniform?

Can a car move uniformly along a horizontal road with the engine shut off?

Fluctuations of which of the following bodies will be free: a) a piston in the engine cylinder, b) a needle of a sewing machine, c) a branch of a tree after a bird flew off it, d) a string of a musical instrument, e) the end of the compass hand; f) membrane of a phone during a conversation; g) a cup of a lever balance?