Cobalt-60 has a half life of 5.25 years. If you started with a 40 gram sample of pure cobalt-60, how many grams of cobalt-60 would remain after 10.5 years?

What is the acceleration of a car moving at a steady speed of 50 mph?

Which sequence of processes occurs in the correct order? a weathering, erosion, transportation. b erosion, weathering, transportation. c erosion, transportation, weathering. d All of these processes occur at the same time.

The size of the gravitational force between two objects depends on their__. frictional force, inertia, masses and the distance between them, Speed and direction

The charge on an electron is: positive negative neutral unknown

How are electrical signals transmitted over long distances?

When the velocity of a mass on a spring is zero, the acceleration is at

Which is a disadvantage of using wind as an energy source? Check all that apply. It may be unreliable. It is not naturally occurring. It produces a lot of waste. It requires wires to carry electricity. It generates large amounts of electricity.

One step in the production of hydroelectric power involves

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?

A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these