What is the difference between a radio telescope, x-ray telescope, and optical telescope (both reflecting and refracting)

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.