Which of the following statement is true about waves?
a. always have the same speed in a medium
b. a wave has the same speed in all media.
c. a wave has the same speed in a medium
d. sound waves are faster than light waves

What is the major limitation to the light microscope?

A( developed during the process of technology design

During the apollo moon missions, astronauts were concerned about the effects of newton's third law of motion when: o a. they ejected waste water, because they were concerned that it would push them off course. o b. they reentered earth's atmosphere, because they were carrying heavy moon rocks. o c. they took off from earth, because a large force was required to generate large acceleration. o d. they detected incoming space debris, because the inertia of the debris could damage their ship.