Which of the following measurements involve a direction? (select all that apply)

A. acceleration

B. speed

C. Time

D. Displacement

What happens to ice when the heat is added?

When must scientific theories be changed? A. When one experiment shows a surprising result. B. When a new government is elected. C. When an old scientist dies D. When new evidence is discovered

When a sound source approaches you, how does the pitch change?

A soccer ball kicked on a level field has an initial vertical velocity component of 15.0 meters per second. Assuming the ball lands at the same height from which it was kicked, what is the total time the ball is in the air?

Counting your pulse can be most accurately performed by applying light pressure to an artery that is close to the surface of the skin. True or false?

What will happen to the brightness of a string of bulbs hooked up in series when you increase the number of bulbs in the string? A. Each light in the string will get brighter. B. Each light in the string will get dimmer. C.

What are the two factors that influence the composition of beach material

Which of the following indicates that a ChemicL change has taken place? (A) a change from liquid to a gas (B) an increase in the volume of a substance (C) a change in the color of a substance (D) a change from a solid to a liquid A precipitate is a

Which of these circuit schematics has an ammeter?

What is the meaning of the word corrosion?