The direction of the force on an electric charge in a magnetic field is
a. in the direction of the magnetic field
b. in the direction of motion of the charge
c. perpendicular to the magnetic field
d. perpendicular to the direction of motion of the charge
e. none of the above
C, D
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Briefly describe the modern theory of how our Moon formed
What will be an ideal response?
A wave is traveling with a velocity of 300 m/s and strikes a surface at an angle of 30.0 degrees with the normal to the surface. The wave splits into a reflected part and a refracted part. The refracted wave travels with a velocity of 400 m/s. What is the angle of refraction?
A. 20.5 degrees B. 25.9 degrees C. 30.5 degrees D. 41.8 degrees E. 50.3 degrees
Spiral arms are thought to be sites of ________, based on the observations of red HII regions and blue-white OB associations in and around these features
Fill in the blank(s) with correct word
A 60.0-Hz AC generator with a peak voltage of 110 V drives a series RL circuit with R = 10.0 ? and L = 10.0 mH. The peak current in the circuit is
a. 0.963 A. b. 10.3 A. c. 11.0 A. d. 11.9 A. e. 29.2 A.