Is the formation of rust on an iron nail a chemical change or a physical change? Explain your answer.

During a lunar eclipse the mood is not completely dark, but it is often a deep red in color. Explain this in terms of the refraction of all the sunsets and sunrises around the world.

How could you be moving in one frame of reference but not in another?

Sandstone is made of many small grains of sand cemented together. Which term names the process that forms sandstone? A. accretion B. fire formed C. lithification D. clastics

If the potential difference across the bulb in a certain flashlight is 3.0 V, What is the potential difference across the combination of batteries used to power it?

Lisa has three classes that each last 50 minutes qhat ia the total nuber of minutes of minutes of the three classe?

Electric current is ...

What type of ethic is life-centered and views humans as just one component life on Earth

Which formula describes acceleration? m/s^2 m/s s/m m2

An arrow is shot upward on mars from ground level with a velocity of 60 meters per second. Its height (in meters) after t seconds is given by 2 s (t) = 60t - 1.9t^2.

Energy transformations in a bouncy house