A radar unit operates at a wavelength of 4.2 cm. Radar waves travel at the speed of light, which is $3.0 \times 10 ^ { 8 }$ . What is the frequency of the radar waves?
A) 7.1 $\times 10 ^ { 6 }$ Hz
B) 7.1 $\times 10 ^ { 9 }$ Hz
C) 6.7 $\times 10 ^ { 9 }$ MHz
D) 7.1 $\times 10 ^ { 9 }$ MHz
E) 6.7 $\times 10 ^ { 9 }$ Hz

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The Answer of A radar unit operates at a wavelength of 4.2 cm. Radar waves travel at the speed of light, which is $3.0 \times 10 ^ { 8 }$ . What is the frequency of the radar waves?
A) 7.1 $\times 10 ^ { 6 }$ Hz
B) 7.1 $\times 10 ^ { 9 }$ Hz
C) 6.7 $\times 10 ^ { 9 }$ MHz
D) 7.1 $\times 10 ^ { 9 }$ MHz
E) 6.7 $\times 10 ^ { 9 }$ Hz

A Radar Unit Operates at a Wavelength of 4 3.0×1083.0 \times 10 ^ { 8 }3.0×108

A Radar Unit Operates at a Wavelength of 4 $3.0 \times 10 ^ { 8 }$