Calculate the wavelengths of microwaves that has a frequency of 1.5 x 10^15hz:

200 nm

Explanation:

Microwaves are Electromagnetic waves.

Electromagnetic waves are waves that are created as a result of vibrations between an electric field and a magnetic field.

EM waves travel at the speed of light

( that is always 3 x 10⁸ ms⁻¹  in a vacuum.)

By the definition of the velocity of waves

V = fλ

V = fλ

3 * 10⁸ ms¹ = 1.5 * 10¹⁵ Hz *  λ

λ = 2 * 10⁻⁷ m = 200 *10 ⁻⁹ m

   = 200 nm

(1 nm = 1 *10 ⁻⁹ m )

28. evolution

29. environment, survive, offspring  

explanation:

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