What evidence of a chemical change is observed when rust forms on iron

If you walk at 5 km/h down the aisle to towards the front end of a train that moves at 70 km/h, what is your speed relative to the ground?

Solve for v P=2/3 (N/V) 1/2mv2

If a sea star egg is taken from the ocean and put into Elk Lake would you expect the egg to shrink swell are stay the same?

If a hurricane is a low pressure system then why is it calm in the eye

Tim's car breaks down just down the street from his house. he and his friends decide to push it to his house. Using Newton's three laws of motion, explain why this will be difficult.

Which movies are longer than 2 hours?

A new object has been discovered in the solar system. In your own words, justify how the object can be proved to be a comet.

What is cosmic microwave background radiation?

Ocean water has a salinity of 35 parts per thousand. Fresh water has a salinity of less than 0.5 parts per thousand. What can you conclude from this information? A. Ocean water is rich in salt minerals. B.

You decide to add up all the work you did yesterday. If you accomplished 10,000 newton·meters of work yesterday, how much work did you do in units of joules?