Homework Help: Physics

Posted by sophie on Saturday, April 11, 2009 at 7:52pm.

An electromagnetic wave has a wavelength of 6.2 x 10^14 m. What is the frequency of the wave?
A. 2.0 x 10^6 Hz
B. 4.8 x 10^-7 Hz
C. 1.8 x 10^24 Hz
D. 5.3 x 10^-22 Hz
I got B..?

When the currents in two parallel metal conductors are in the same direction, the conductors ____ each other.
A. attract
B. repel
C. do no exert any force
D. exert forces that are perpendicular to
I got D..?

Physics - bobpursley, Sunday, April 12, 2009 at 10:34am
first right,second wrong.

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