An electromagnet cannot be shut off once it is started.

True

or

False

You are an astronaut floating alongside your space ship. If you throw a baseball with a speed of 10 m/s, you will move at: a) a slower speed and in the same direction as the baseball. b) a higher speed and in the same direction as the baseball.

An object of mass M is dropped near the surface of Earth such that the gravitational field provides a constant downward force on the object.

Compare and contrast radiant energy and sound energy

What characteristics of a planet determine the strength of its gravitational force on other objects?

Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the machine?

Light travels at 150000000km from the sun to earth in 8 minutes. What speed is this in Km/s

Electricity problem (coulomb's law)

An observer (O) spots a plane (P) taking off from a local airport and flying at a 29° angle horizontal to her line of sight and located directly above a tower (T). The observer also notices a bird (B) circling directly above her.

In order for convection to occur, you must have

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?