Look at the graph below. Which type of graph is displayed? line bar scatterplot histogram

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Explain why electric current cannot exist if a current doesn't have a voltage source.