The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is 300 meters
Indicate whether the statement is true or false
T
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What is the direction of 
at point P?
A. A B. B C. C D. D E. E F. F T. Zero
An object moving with speed 
collides head-on with an object at rest that is very much more massive. If the collision is elastic, how does the lighter object’s speed 
after collision compare to ?
A. 
B. 
C. 
D. 
E. 
F. 
What is the most accurate way to determine the distance to a nearby galaxy?
A) stellar parallax B) radar ranging C) Hubble's law D) main sequence fitting E) Cepheid variables
Two solenoids of equal length are each made of 2000 turns of copper wire per meter. Solenoid I has a 5.00-cm radius; solenoid II a 10.0-cm radius. When equal currents are present in the two solenoids, the ratio of the magnitude of the magnetic field BI along the axis of solenoid I to the magnitude of the magnetic field BII along the axis of solenoid II, BI/BII, is
a. 1/4. b. 1/2. c. 1. d. 2. e. 4.