Related questions with answers

Three waves are described by the following equations: $y_1=0.1\;\mathrm{m}\times \sin{\left[(2\;\mathrm{s^{-1}}t)+(3\;\mathrm{m^{-1}}x)\right]}$ , $y_2=-0.2\;\mathrm{m}\times \sin{\left[(3\;\mathrm{s^{-1}}t)-(2\;\mathrm{m^{-1}}x)\right]}$ , $y_3=0.3\;\mathrm{m}\times \sin{\left[(4\;\mathrm{s^{-1}}t)-(4\;\mathrm{m^{-1}}x)\right]}$ . (a) Rank the speeds of the waves from largest to smallest; (b) rank the wavelengths of the waves from largest to smallest; (c) rank the displacement magnitudes of the waves at t = 0.5 s, x = 0.5 m from largest to smallest.

A seismographic station receives S and P waves from an earthquake, separated in time by 17.3 s. Assume the waves have traveled over the same path at speeds of 4.50 km/s and 7.80 km/s. Find the distance from the seismograph to the focus of the quake.

The combining of waves as they meet is known as a. a crest. b. noise. c. interference. d. the Doppler effect.

Question

Why is it dangerous to be exposed to X-rays but not (or at least much less) dangerous to be exposed to radio waves?

Solution

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Answered 1 year ago

X-rays have a greater frequency than radio waves. Yet with their lower wavelength and greater frequency, X-rays are more harmful because they penetrate deeper into the human body and interact with and influence cells, occasionally resulting in neoplastic transformation of cells. Excessive X-ray exposure can alter the genes in a person's cells, leading to cancer. As their capacity to interact and affect cells improves, so does the danger of radiation illness, cancer, and other radiation-caused disorders.