46. * BIO EST Fireflies Fireflies emit light of wavelengths from 510 nm to 670 nm. They areabout 90% efficient at converting chemical energy into light (compared to about 10% foran incandescent lightbulb). Most living organisms, including fireflies, use adenosinetriphosphate (ATP) as an energy molecule. Estimate the number of ATP molecules a fireflywould use at 0.5 eV per molecule to produce one photon of 590-nm wavelength if all theenergy came from ATP.

Detailed explanation:In this problem, we want to determine the number of ATP molecules required for…

Answered: 46. * BIO EST Fireflies Fireflies emit…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Part A The intensity of sunlight hitting the surface of the earth on a cloudy day is about 0.50 kW/m² Assuming your pupil can close down to a diameter of 2.0 mm and that the average wavelength of visible light is 550 nm, how many photons per second of visible light enter your eye if you look up at the sky on a cloudy day? Express your answer using two significant figures. N = ΜΕ ΑΣΦ Submit Request Answer ?
3. دیا Calculate the wavelength (in nm) of a photon whose energy is 3.5 eV. Given, Planck's constant is 6.63 x 10-34 J-s, Speed of light in a vacuum is 3.0 × 108 m/s and 1 eV 1.602 x 10-1⁹ J
2. When light with a wavelength of 218 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.34 x 1019 J. Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface. nm
The electronic structure of atoms and molecules may be investigated using photoelectron spectroscopy. An electron in a photoelectron spectrometer is accelerated from rest by a uniform electric ﬁeld to a speed of 420 km s−1 in 10 µs. Determine the kinetic energy of the electron? a. 8.0 x 10-20 N.m b. 1.6 x 10-25 N.m c. 3.8 x 10-25 N.m d. 4..0 x 10-2 N.m
7
If the intensity of a light source is increased while the frequency and the metal surface remain the same, which of the following will occur? a. Electrons will be emitted at an increased rate with more average energy per electron. b. Electrons will be emitted at the same rate with the same average energy per electron. c. Electrons will be emitted at the same rate but with less average energy per electron. d. Electrons will be emitted at the same rate but with more average energy per electron. e. Electrons will be emitted at an increased rate with the same average energy per electron.
What is the essential difference between gamma rays and green light? A. Gamma rays have an electric field, green light do not. B. There is no essential difference in the nature of gamma rays and green light other than he difference in frequency and wavelength. C. Greenlight undergoes refraction, gamma rays I do not D. Gamma rays are a form of radiation, green light is not E. Greenlight is the beam of photons, gamma rays are not photons
A photon of light has a frequency of 5.00 x 1014 Hz. If the frequency of the photon was doubled then which of these would happen to the energy of this photon? a. it would become one-fourth as much b. it would become half as much c. it would double d. it would quadruple e. it would triple
Light with a wavelength of 550 nm illuminates a metallic surface with a work function of 1.10 eV. a. What is the maximum speed of the photoelectron? b. What is the minimum potential difference required to stop the electrons? *I ask that the answer be written with clear and readable handwriting or typed*
A photon of red light (wavelength = 720 nm) and a Ping-Pong ball (mass = 2.30 × 10-³ kg) have the same momentum. At what speed is the ball moving? Number i Units
The photoelectric effect provided evidence that supported the early suggestion by Max Planck that electromagnetic waves exist as discrete packets of energy. a. Describe the energy transformations that occur during the photoelectric effect. b. If the incident light was not causing the emission of any electrons from the target metal, how could the light be changed to start causing emission of electrons? Explain your answer. c. Rather than changing the light source, explain why changing the target metal from part (c) may allow for the detection of emitted electrons.
How is the frequency of light related to its ability to produce the photoelectric effect? A. Low-frequency light does not produce the photoelectric effect. B. The frequency of the light is not related to the photoelectric effect C. High-frequency light does not produce the photoelectric effect D. All frequencies of light produce the photoelectric effect

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