The atomic number of magnesium is 12. Its nucleus must contain A) 6 protons and 6 neutrons. B) 6 neutrons and 6 electrons. C) 12 neutrons and no protons. D) 12 protons and no electrons.

You plan to take your hair blower to europe, where the electrical outlets put out 240 v instead of the 120 v seen in the united states. the blower puts out 1600 w at 120 v.

True or false if matter can be found in different forms different forms are called states of matter

How does a steam engine work? steam causes wheels to turn steam expands and spins an axle steam turns a turbine steam enters a cylinder and pushes a piston

1.5 gigabytes equals how many terabytes?

Find the rotational inertia of a cylinder. Mass is 2.0kg, radius. 21m

Scientists hypothesize that oxygen began to accumulate in earth's atmosphere of living things with the ability to?

The 3 stages of the water cycle are

What is the main natural force responsible for mass movement of rocks and debris?

In a mass spectrometer, a specific velocity can be selected from a distribution by injecting charged particles between a set of plates with a constant electric field between them and a magnetic field across them (perpendicular to the direction of

What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart. (A) 4.5*10-9N (B) 5.6*10-9N (C) 7.4*10-9N (D) 8.0*10-9N (E) 10.5*10-9N