BIO Ultraviolet
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Chapter 32 Solutions
University Physics, Volume 2 (Chs. 21-37) (14th Edition)
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- The wavelength of light emitted by a Carbon Dioxide laser is 10.6 micrometers. a) What is the frequency of the light and b) What part of the EM Spectrum is it. Look in the middle of the chart for the Type of Radiation where you see Radio Waves, Microwaves... etc. to make your selection? c) What are some detectable Objects at this frequency.arrow_forwardA. What is the energy of a 194.0MHz radio-frequency photon? B. What is the energy of a visible-light photon with a wavelength of 611.0nm? C. What is the energy of an x-ray photon with a wavelength of 0.236nm?arrow_forwardOne recent study has shown that x rays with a wavelength of 0.0050 nm can produce mutations in human cells.a. Calculate the energy in eV of a photon of radiation with this wavelength.b. Assuming that the bond energy holding together a water molecule is typical, use the given table to estimate how many molecular bonds could be broken with this energy.arrow_forward
- A photon has a wavelength of 560 nm. a) What is the energy of the photon? b) What is the frequency of the photon? Round answers to 2 decimal places a) E = ______________ J b) f = _______________ Hzarrow_forwardThe photoelectric effect can be used in engineering designs for practical applications. For example, infrared goggles used in night-vision applications have materials that give an electrical signal with exposure to the relatively long wavelength of IR light. If the energy needed for signal generation is 7.5 x 10-20 J, what is the minimum wavelength? What is the frequency of light that can be detected? c = 2.998 x 10 m/s h = 6.626 x 10-34 J s marrow_forwardOur sun's 5800 K surface temperature gives a peak wavelength in the middle of the visible spectrum. What is the minimum surface temperature for a star whose emission peaks at some wavelength less than 400 nm? (i.e. in the ultraviolet)arrow_forward
- Suppose that a detector in the Hubble Space Telescope was capable of detecting visible light in the wavelength range of 400 to 700 nm. (a) List all the wavelengths for the hydrogen atom that are in this range and their series name. (b) The detector measures visible wavelengths of 537.5 nm, 480.1 nm, and 453.4 nm that researchers believe are due to the hydrogen atom. Why are all the known visible hydrogen lines not detected? (c) Use these data to calculate the speed of the stellar object that emitted the spectra. Assume that the object is not rotating. Why might rotation be an issue?arrow_forwardHow much energy does a photon of UV light (frequency = 3.6 x 1016 Hz) have? How fast do the light travel in a vacuum, water (n=1.33), and glass (n=1.50)?arrow_forward(a) What is the wavelength (in meters) of a 93.3 MHz Radio wave frequency? (b) What is the frequency (in Hz) of an x-ray beam with a wavelength of 0.0100 nm?arrow_forward
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