A copper penny has a mass of 3.1 g and a volume of 0.35 cm3. What is the density of copper? Be sure to show your work and include units.

1. Describe three ways that the transverse waves of the electromagnetic spectrum are used in medicine.

Is Heredity nature or nurture?

What two models are used to describe how light behaves

Faina says that an object cannot be in mechanical equilibrium when only a single force acts on it. do you agree or disagree? explain.

What is light year give me a easy sentence with that word i can not write small

The scientific method begins with recognizing a problem. The recognized problem in this scenario is, "Why is the printer in the office not working?" Choose the hypotheses that are testable and from which an experiment can be formed.

The correctly balanced equation for H2O2 → H2O + O2 is

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron