Which diagram best represents a convex lens

2 decimeters expressed in millimeters

The minute hand of a large clock is 0.50 m long. (A) Calculate its linear speed at its tip in meters per second. (0.000873 m/s) (B) Calculate the centripetal acceleration of the tip of the hand. (1.52 x 10-6 m/s2)

A race car drives around a turn on a flat race track at constant speed. Identify the force that allows the race car to travel around the turn? A) Air resistance applies the force needed. B) No force is required to go around the turn.

What are the characteristics of an index fossil? A. limited to a short span of geologic time but widely distributed B. Geographically limited C. found only in shale D. preserved as a mold E. Large enough to see without a hand lens

Thorium-232 decays by alpha decay. Part of the nuclear equation is shown below. Fill in the blank with a number. 232/90

A student throws a coin vertically downward from the top of a building. The coin leaves the thrower'S hand with a speed of 15.0m/s. How far does it fall in 2.00 s?

A force between two objects?

Two iron rods are placed horizontally, touching end-to-end. One end of one rod is heated. After some time, the other rod also feels warm to touch.

Which part of the motor is responsible for reversing the flow of current?

In a generator, as the magnet spins, opposite poles of the magnet push the electrons in opposite directions. This back-and-forth movement of electrons is called what? A) revolutions per minute B) direct current C) alternating current.