Suppose there are three stars in space, each moving at 100 km/s. star a is moving across (i. e., perpendicular to) our line of sight, star b is moving directly away from earth, and star c is moving away from earth, but at a 30° angle to the line of sight. from which star will you observe the greatest doppler shift? from which star will you observe the smallest doppler shift?

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?