Which statement is correct?

A. Light, in a vacuum, travels at the same speed even if the light source is moving.
B. Light given off from a moving source will travel faster in a vacuum.
C. Light given off from a moving source will travel faster in air.
D. Light, in a vacuum, travels slower if the light source is moving.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.