Chemistry. Calculating wavelength and frequency

Radar signals are also part of the EMS in the microwave region. A typical radar signal has a wavelength of 3.19 cm. What is the frequency in Hertz?

• 0.940 x10⁸ Hz

• 9.40x10⁷ Hz

• 9.40x10⁹ Hz

• 940 Hz

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NGSS.HS-PS4-1

FM radio dials are calibrated in frequency. In Ottawa, the radio station MAGIC 100 broadcasts its FM signal at a frequency of 101.1 MHz. What is the wavelenght of the signal in meters?

• 2.970 m

• 303.3 m

• 29.70 m

• 30.33 m

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NGSS.HS-PS4-1

The frequency of violet light is 7.5x10¹⁴ Hz. What is its wavelength?

• 4.0x10^-7 m

• 4.0x10⁷ m

• 2.25x10²³m

• 2.25x10²³ Hz

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NGSS.HS-PS4-1

Red light has a wavelength of 675 x 10^-9 m. What is its frequency?

• 2.03x10¹¹ m

• 4.44x10¹⁴ Hz

• 4.44x10¹⁴ nm

• 2.03x10¹¹ Hz

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NGSS.HS-PS4-1

What is the speed of light?

• 3.0x10⁸ ms

• 3.0x10⁸ m/s

• 6.626x10^-34 Js

• 6.626x10^-34 J/s

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NGSS.HS-PS4-1