Which of the following is a mixture:

a. air c. water

b. salt d. sulfur

What are two ways to change the state of a substance?

How big would you have to be to have a gravitational pull?

A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg.

Which of the statements below is correct about waves? A) All waves do not carry energy. B) All waves carry energy without transferring matter. C) All waves carry energy by transferring matter. D) All waves transfer matter.

What is the low end of the range of surface temperature of white stars

Design an investigation to compare the durability of the three different brands

The surface area of the skin of a person who is 70 inches tall and weighs w pounds can be estimated by s (w) equals=342 w superscript 0.425342w0.425 , where s is in square inches.

The train speeds passed Holly at 70 km/h north ward. This spider crawls past lukes foot in the same direction at 30 m/h. What is the velocity of the spider relative to Holly?

What is the name of a particle with no charge in an atom?

What voltage produces a current of 500 amps with a resistance of 50 ohms?