Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 5, Problem 30Q
To determine
The wavelength of photons.
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Check out a sample textbook solutionStudents have asked these similar questions
A photon has a frequency 4873935 Hz. Calculate its
energy in Joules. Answer in Scientific Notation.
Round your answer to 2 significant figures.
What will be the energy associated with a blue photon (in
Joules), if the frequency of the blue light is 650 THz (Terahertz
(THz); 1 Tera – 1012y?
[Hint: Use Planck's cquation: E = hf to calculate the photon
energy! h - Planck's constant – 6,63 × 10-4 Js – 4.14 ×1015 eVs]
A. 650×1012 J
B. 6.5×10° J
C. 4.3x1015 J
D. 4.3×10-19 J
E. 4.3x1019 J
What is the wavelength in meters observed with a frequency of (4.5x10^15)?
Answer with 2 significant figures and it must be in scientific notation.
Note: Your answer is assumed to be reduced to the highest power possible.
Your Answer:
Answer
x10
units
Chapter 5 Solutions
Universe: Stars And Galaxies
Ch. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Prob. 4QCh. 5 - Prob. 5QCh. 5 - Prob. 6QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Prob. 9QCh. 5 - Prob. 10Q
Ch. 5 - Prob. 11QCh. 5 - Prob. 12QCh. 5 - Prob. 13QCh. 5 - Prob. 14QCh. 5 - Prob. 15QCh. 5 - Prob. 16QCh. 5 - Prob. 17QCh. 5 - Prob. 18QCh. 5 - Prob. 19QCh. 5 - Prob. 20QCh. 5 - Prob. 21QCh. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - Prob. 26QCh. 5 - Prob. 27QCh. 5 - Prob. 28QCh. 5 - Prob. 29QCh. 5 - Prob. 30QCh. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Prob. 38QCh. 5 - Prob. 39QCh. 5 - Prob. 40QCh. 5 - Prob. 41QCh. 5 - Prob. 42QCh. 5 - Prob. 43QCh. 5 - Prob. 44QCh. 5 - Prob. 45QCh. 5 - Prob. 46QCh. 5 - Prob. 47QCh. 5 - Prob. 48QCh. 5 - Prob. 49QCh. 5 - Prob. 50QCh. 5 - Prob. 51Q
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- An atom has its electron in the energy level at - 1.2 eV. It absorbs a photon, which promotes the election to the -0.4 eV level. What is the wavelength (in meter) of this photon. Round off the answer to 2 decimal places with scientific representation.arrow_forwardCalculate the wavelength of a photon that has energy 2.83 × 10−19 Joules. Give your answer in units of nano metres. Hint: Planck’s constant h = 6.625 × 10−34 J s.arrow_forwardChoose the correct statements concerning the electromagnetic spectrum given off by stars. (Give ALL correct answers, i.e., B, AC, BCD...) A) Blue photons are more energetic than red photons. B) A hot star will be more red in color than a cooler star. C) All stars are the same color as our Sun. D) Hot stars are much brighter than cool stars of the same size and distance from the Earth. E) If we see a blue star and a red star in a nearby star cluster, we know the red star is hotter. F) Blue photons (blue light) have a longer wavelength than red photons.arrow_forward
- Can you solve the problem?arrow_forwardHow did they get 0 and then 1250nm for the answers? Trying to study for a quiz can you guys help pleasearrow_forwardGiven below are some famous numbers associated with electromagnetic radiations in different contexts in physics. State the part of the electromagnetic spectrum to which each belongs.(a) 21 cm (wavelength emitted by atomic hydrogen in interstellar space).(b) 1057 MHz (frequency of radiation arising from two close energy levels in hydrogen; known as Lamb shift).(c) 2.7 K [temperature associated with the isotropic radiation filling all space-thought to be a relic of the ‘big-bang’ origin of the universe].(d) 5890 Å - 5896 Å [double lines of sodium]arrow_forward
- A photon has wavelength of (λ = 695 pm). Does this photon have enough energy to ionize a hydrogen atom? Show DETAILED calculations to support your answer in the following format. It's a must for me! Its not that complex of a question. you guys have answered a question like this before. please and thank you. What are you solving for? What should be the units of your final answer? What information are you given? What information do you need? How will you connect the information you have and the information you need to solve this problem? (Provide a unit plan) Solve the problem. Be sure to show all units and write clearly. Does your answer make sense? How do you know? Thank youarrow_forwardHow to calculate.arrow_forwardWhat will be the energy associated with a blue photon (in electronvolts, eV), if the frequency of the blue light is 650 THz (Terahertz (THz); 1 Tera = 1012)? [Hint: Use Planck's equation: E - hf to calculate the photon energy! h- Planck's constant – 6.63 x 10-34 Js = 4.14 x1015 eVs] A. 6.5 eV B. 6.5×10-3 eV C. 2.7 eV D. 2.7×10-27eV E. 2.7x107 eVarrow_forward
- Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 x 10-19 J. (a) a photon having a frequency of 6.50 x 10¹7 Hz (b) a photon having a wavelength of 2.50 x 10² nm Step 1 (a) The energy of a photon is given by E = hf, where h = 6.63 x 10-34 Js is Planck's constant and f the frequency of the electromagnetic wave associated with the photon. A photon having frequency f = 6.50 x 10¹7 Hz has an energy, expressed in units of electron volts, of E = hf = (6.63 × 10-34 J. s) (1 x 10³ ev. x 10¹7 Hz) 1 eV x 10-19 1arrow_forwardPhotons of a certain infrared light have an energy of 1.17x10^-19 J A) what is the frequency of this light ————HZ B) calculate its wavelength in nanometers .arrow_forwardWhat wavelength ( in nanometers ) is the peak intensity of the light coming from a star whose surface temperature is 4987 Kelvin? What color would we see with our eyes?arrow_forward
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