The element aluminum has an atomic number of 13. How many protons are in the nucleus of an aluminum atom? How many electrons does an aluminum atom have?

What is the name of the force that slows it down?.

The distance between stars if referred to aa

Zachary, a lab instructor, is writing a safety contract that his chemistry class will use for an experiment. He mentions that students should not eat or drink in the lab. Which other item should also be included? A. Do not wear hats in the lab. B.

Which person is responsible for the building and operation of stage machinery and scenery; has charge of lighting crews and industrial scheduling; has charge of moving scenery in and out of the theatre;

What is the definition of power? A. The ability to do work B. The rate of doing work C. The amount of work done D. Work output divided by work input

Suppose you squeeze a sponge into a small ball. does the mass of the sponge change? Does it's density change?

A solid round bar with diameter of 2-in has a groove cut to a diameter of 1.8-in, with a groove radius of 0.1-in. the bar is not rotating.

If a pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25. N for 10 M. The handle she pulls on makes an angle of 36.5 degrees with the horizontal. How much work does she do over the ten meter distance?

What happens to the density when water is poured into a empty glass?

A British newspaper was interested in whether groups of people who differed in social standing were treated differently when they complained to organizations about poor service they had received.