Urgent pleassseee

calculate the wavelength of emr that has a frequency of 7.50 x 10^20 hz

i dont understand this at all and there is a quiz tomorrow

0.4 * 10^-12 m

Explanation:

Frequency of the given Electromagnetic radiation is 7.50* 10^20 Hz

Speed of the electromagnetic radiation is 3*10^8 m/s

Hence wavelength is given by the formula: Speed/Frequency

Substituting the required values:

Wavelength = 3 * 10^8/7.50 * 10^20

=3/7.5 * 10^-12 = 0.4 * 10^-12 m

Hence the required wavelength of the electromagnetic radiation is 0.4*10^-12 m/s

d. temperate deciduous forest

answer; i do believe the correct answer is (river); /// good luck