If a tunnel is 4 m by 7 m in cross section, a car in the tunnel
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If a tunnel is 4 m by 7 m in cross section, a car in the tunnel will not receive an AM radio signal (e.g., f = 10 MHz).
(a) True
(b) False
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a True The AM radio frequency of 10 MHz is much hig...View the full answer
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