Which of the following is an example of a pure substance?

A. a sample of oxygen gas

B. a solution of sugar water

c. a mixture of pasta and sauce

D. an alloy of iron and carbon

In order for objects to remain at rest what must be true?

In late spring, a student began conducting an investigation about the flower preferences of bees. She counted the number of wildflowers in a small plot and created the following table.

Coulomb's law states that the force F of attraction between two oppositely charged particles varies jointly as the magnitude of their electrical charges q1 and q2 and inversely as the square of the distance d between the particles.

Where is the distribution of positive charges found in the atom?

If the wavelength of a wave increases does its frequency also increase?

Does temperature affect the dissolving phase?

In a clear, coherent, paragraph-length answer, explain why the speed of the apple half way between the release and the maximum height is not half the initial speed.

In pea plants Round (R) is a dominant trait and wrinkled nose (r) is a recessive trait. Which combination would result in wrinkled seeds? 1. RR 2. Rr 3. rr 4. ww

According to the article, data from scientific observations fulfill what three functions

What are the three ways that an object can accelerate