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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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.
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