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17 solutions

Wavelength and Frequency

Q. Be sure to answer all parts. A lithium flame has a characteristic red color due to emissions of wavelength 6'1 nm. What is the mass equivalence of 9.0 mol of photons of this wavelength (1 J =1 kg•m• s•)?

Solved • Jul 22, 2019

Wavelength and Frequency

Q. A sodium flame has a characteristic yellow color due to emissions of wavelength 185cm. What is the mass equivalence of one photon of this wavelength(1 J=1 kg*m2/4

Solved • Jul 22, 2019

Wavelength and Frequency

Q. Cobalt-60 is a radioactive isotope used to treat cancers of the brain and other tissues. A gamma ray emitted by an atom of this isotope has an energy of 8.10 Me\ (million electron volts: 1 eV = 1.601 10-19 J). What is the frequency (in Hz) and the wavelength (in m) of this gamma ray'7 Enter your answers in scientific notation. Frequency: X10 Hz Wavelength: X10

Solved • Jul 22, 2019

Wavelength and Frequency

Q. Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies. (a) A molecular vibration absorbs radiation of wavelength 169 pm. What frequency tin s-1) corresponds to that wavelength? Enter your answer in scientific notation. (b) A molecular vibration has a frequency of vibration of 9.204 x 1013 Hz. What wavelength (in pm) corresponds to that frequency?

Solved • Jul 22, 2019

Wavelength and Frequency

Q. Green plants absorb sunlight to power photosynthesis, the chemical synthesis of food from water and carbon dioxide. The compound responsible for light absorption and the color of plants, chlorophyll, strongly absorbs light with a wavelength og 662.nm. Calculate the frequency of this light. Round your answer to 3 significant digits.

Solved • Jun 29, 2019

Wavelength and Frequency

Q. NASA communicates with the Space Shuttle and International Space Station using Ku-band microwave radio. Suppose NASA transmits a microwave signal to the Space Shuttle using radio waves with a frequency of 12.GHz. Calculate the wavelength of these radio waves. Round your answer to 2 significant digits.

Solved • Jun 29, 2019

Wavelength and Frequency

Q. Infrared radiation from young stars can pass through heavy dust clouds surrounding them, allowing astronomers here on Earth to study the earliest stages of star formation, before a star begins to emit visible light. Suppose an infrared telescope is tuned to detect infrared radiation with a frequency of 21.1THz. Calculate the wavelength of the infrared radiation. Round your answer to 3 significant digits.

Solved • Jun 29, 2019