If the andromeda galaxy collided with the milky way, what would most likely happen to earth?

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.