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

Physics & Space Science

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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.

Physics & Space Science

What is the direction of at point P?

A. A B. B C. C D. D E. E F. F T. Zero

Physics & Space Science

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.

Physics & Space Science

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

Physics & Space Science