Which of the following is a mixture?

A. steel

B. water

C. oxygen

D. gold

A railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. the cara lock together. what is their final velocity? A. 2.0 m/s B. 0.5 m/s C. 60,000 kg-m/s D. 1.0 m/s

What is the direction of the electric force exerted by paperclip 1 on paperclip 2?

When a car travels around a curve in the road, what supplies the centripetal force needed?

Hydrochloric acid and sodium hydroxide can be combined in equal ratios to form sodium chloride and water. Which best explains the reaction? A: The total volume produced by sodium hydroxide will result in the same volume of sodium chloride.

Which is true of the low-tide zone? A. It hosts very few kinds of life. B. It is almost always under water. C. Its ecosystem never includes species that live on land. D. Creatures there can spend a lot of time exposed to the air.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?

What is the reasonable estimate for Lim g (x)

Do tides depend more on the strength of gravitational pull or on the difference in strengths? explain.

Which of the following scenarios would create the most friction between the two surfaces? A.) a shoe with a rubber sole moving against a smooth tile floor B.) a shoe with a wooden sole moving against a smooth tile floor C.

A ball is dropped from rest from the top of a building. what force is responsible for the downward motion of the ball?