Arifle is aimed directly at the bulls eye of a target 75 meters away. if the bullet has a speed of 250 m/s, how far below the bulls eye will the bullet hit

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

The energy equivalent of the rest mass of an electron is

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm