Can you figure out how high the speed of star has to be in direction of the Earth in order to blueshift the line in the blue part of the spectrum by 25 nanometers? ___km/s

Drag each item into the proper state of matter category.

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?