18. When considering a magnet's force of attraction over a known distance, you would expect the strength of attraction 4 inches
away from the magnet to be _______ weaker than the strength of attraction at 1 inch from the magnet.
A. 8 times
B. 4 times
C. 16 times
D. 6 times
A. 8 times
B. 4 times
C. 16 times
D. 6 times
2 answers:
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The minimum frequency is
while the maximum frequency is
Using the relationship between frequency f of a wave, wavelength
and the speed of the wave v, we can find what wavelength these frequencies correspond to:
So, the wavelengths of the radio waves of the problem are within the range 188-545 m.
while the maximum frequency is
Using the relationship between frequency f of a wave, wavelength
So, the wavelengths of the radio waves of the problem are within the range 188-545 m.
Explanation:
if the elevator is moving upward with the constant speed the spring scale will read 18 N which is the mass of each of the two blocks attached by separate springs to the scale at opposite ends.
