A microwave is travelling through a vacuum at 300,000,000 m/s (speed of light). It has a wavelength of 1cm. What is it's frequency?
v = f * λ --- 300,000,000 = f * 0.01 --- f = 300,000,000 ÷ 0.01 --- f = 30000000000 Hz (30 GHz, 3000 MHz, 30000000 KHz)
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