An electric motor must have which of the following in order to work?

galvanometer, power source, secondary coil, or primary coil

Two disks of identical mass but different radii (r and 2r) are spinning on frictionless bearings at the same angular speed?0, but in opposite directions. The two disks are brought slowly together.

Which is a compound machine? a broom a screwdriver a slide a pair of scissors

1) A stone is dropped from their top of a tower. if it reaches the earth in 6 seconds, the height of the 3 tower is nearly: a) 360 m b) 180 m c) 100 m d) 60 M 2) A car accelerates from rest at a constant rate for the first time 10 seconds and

During a race, a runner runs at a speed of 6 m/s. 2 seconds later, she is running at a speed of 10 m/s. What is the runner's acceleration? Show your work.

What are non examples of light years?

An unknown solution has a pH of 8. How would you classify this solution? A) The substance is an acid. B) The substance is a base. C) There is not enough information to answer the question.

What is the most abundant element in the universe? A. helium B. hydrogen C. carbon

A bee flies at a constant rate of 5 ms until it notices a flower. It then comes to rest in 5 seconds. Find the acceleration of the bee if a = ΔvΔt

When is there zero net force on an object?

The bending of light when it travels from one material to another is called deflection refraction reflection correction