If the Milky Way and another galaxy are on a collision course, scientists should expect what of a light shift?

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

The material that keeps its new shape after it is stretched is called?