What is the medium that sound waves travel through when a person speaks?

a. Air

c. Vocal cords

b. Your tongue

d. It does not use a medium

Which type of heat transfer can happen even if there are no particles of matter? A. Conduction B. Radiation C. Convection D. Insulation

A girl walks East at 2.7 m/s. What is the y component of her velocity?

Who has a greater weight to mass ratio, a person weighing 400 N or a person weighing 600 N? Select one: a. The question can't be answered; not enough information is given. b. Neither; their ratios are the same. c. the person weighing 400 N d.

The electron cloud model is a modern theory about the structure of atoms that explains many of the atom's behaviors.

Which action can be explained by physics

In a series circuit, loads which have the same voltage dropped across them will have?.

When a brick is dropped from the roof of a house, it lands on the ground with a speed v. What will the speed at ground level be for an identical brick dropped from a roof twice as high as the first one?

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?