The energy density of starlight in interstellar space is 10–15 J/m3. If the average wavelength of...
The energy density of starlight in interstellar space is
10–15 J/m3. If the average wavelength of
starlight is 500 nm, what is the corresponding density of photons
per cubic meter of space? (photons/m3)
photons/m3
Homework Answers
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The energy density of starlight in interstellar space is
10–15 J/m3. If the average wavelength of...
ok this same question has been posted before but there were two answer responses, each giving...
ok this same question has been posted before but there were
two answer responses, each giving a diffrent answer? and i am
confused on how to convert 500 nm to m? is it 1x10^-7 or
1x10^-9?
eSee page 337 17 Question (3 points) 1st attempt See Periodic Table See Hint The energy density of starlight in interstellar space is 10-15 J/m3. If the average wavelength of starlight is 500 nm, what is the corresponding density of photons per cubic meter...
Interstellar space has an average temperature of about 10 K , and an average density of...
Interstellar space has an average temperature of about 10 K , and an average density of hydrogen atoms of about one hydrogen atom per cubic meter. Calculate the mean free path of hydrogen atoms in interstellar space. Use ?=100 pm as the diameter of a hydrogen atom.
Electromagnetic wave has an average energy density of 2.0 J/m3 . A) Find the electric field...
Electromagnetic wave has an average energy density of 2.0 J/m3 . A) Find the electric field amplitude. Answer in V/m B) Find the magnetic field amplitude. Answer in mT C) By what factor must the field amplitudes be increased if the average energy density is to be doubled to 4.0 J/m3 ?
One watt (W) is equal to 1 J/s. Assume that 5.0% of the energy output of...
One watt (W) is equal to 1 J/s. Assume that 5.0% of the energy output of a 75 watt light bulb is visible light and that the average wavelength of the light is 550 nm, how many photons per second are emitted by the light bulb? If 5.0% of the energy of a 75 watt light bulb is visible light, then the rate of energy of all the photons emitted is J/s (3 s.f.). A 550 nm wavelength is the...
Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.71...
Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.71 × 10−20 J per photon.m For light of wavelength 450 nm, calculate the number of photons per joule. photons/J Enter your answer in scientific notation. Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron (using one of the photons with wavelength 450 nm) is 2.38 × 10−19 J.
If the average density of the universe is at least 6.0 x 10"27 kg/m3, then the...
If the average density of the universe is at least 6.0 x 10"27 kg/m3, then the universe will eventually stop expanding and begin contracting (a) How many electrons are needed in each cubic meter to produce the critical density? (me 9.11 x 10-31 kg) electrons/m (b) How many protons per cubic meter would produce the critical density? (mp 1.67 x1027 kg) protons/m3 eBook -10.62 points Tipler6 1.P075. My Notes Ask Your Teac The table below gives the periods T and...
3 attempts left Check my work Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1....
3 attempts left Check my work Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.61 x 10-20 J per photon. For light of wavelength 450 nm, calculate the number of photons per joule. x 10 photons/J Enter your answer in scientific notation. Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron (using one of the photons with wavelength 450 nm) is 2.93 x 10""'J....
15, O -1 points Tiplere 1. F.070. If the average density of the universe is at...
15, O -1 points Tiplere 1. F.070. If the average density of the universe is at least 6.0 x 10 27 kg/m3, then the universe will eventually stop expanding and begin contracting. (a) How many electrons are needed in each cubic meter to produce the critical density? (me 9.11 x 10 31 kg) electrons/m (b) How many protons per cubic meter would produce the critical density? (mp 1.67 x 10 27 kg) protons/m a Show My Work ptional) Submit Answer...
Please make sure you give me the correct answer 13) The cosmic background radiation permeating the...
Please make sure you give me the correct answer
13) The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. The energy density of deep space is 4.19 x 10-8 J/cm3 a, What is the peak wavelength of this radiation? b, Assuming the energy density of space is from these photons, how many photons are there on average in each cubic centimeter of space?
Find kinetic energy per cubic meter of flowing blood ( m3) in aorta for individual at...
Find kinetic energy per cubic meter of flowing blood ( m3) in aorta for individual at rest. Suppose flow rate is about 15 liter/min, radius of aorta cm. The density of blood is 1.05∙103kg/m3
ok this same question has been posted before but there were
two answer responses, each giving a diffrent answer? and i am
confused on how to convert 500 nm to m? is it 1x10^-7 or
1x10^-9?
eSee page 337 17 Question (3 points) 1st attempt See Periodic Table See Hint The energy density of starlight in interstellar space is 10-15 J/m3. If the average wavelength of starlight is 500 nm, what is the corresponding density of photons per cubic meter...
One watt (W) is equal to 1 J/s. Assume that 5.0% of the energy output of a 75 watt light bulb is visible light and that the average wavelength of the light is 550 nm, how many photons per second are emitted by the light bulb? If 5.0% of the energy of a 75 watt light bulb is visible light, then the rate of energy of all the photons emitted is J/s (3 s.f.). A 550 nm wavelength is the...
If the average density of the universe is at least 6.0 x 10"27 kg/m3, then the universe will eventually stop expanding and begin contracting (a) How many electrons are needed in each cubic meter to produce the critical density? (me 9.11 x 10-31 kg) electrons/m (b) How many protons per cubic meter would produce the critical density? (mp 1.67 x1027 kg) protons/m3 eBook -10.62 points Tipler6 1.P075. My Notes Ask Your Teac The table below gives the periods T and...
3 attempts left Check my work Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.61 x 10-20 J per photon. For light of wavelength 450 nm, calculate the number of photons per joule. x 10 photons/J Enter your answer in scientific notation. Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron (using one of the photons with wavelength 450 nm) is 2.93 x 10""'J....
15, O -1 points Tiplere 1. F.070. If the average density of the universe is at least 6.0 x 10 27 kg/m3, then the universe will eventually stop expanding and begin contracting. (a) How many electrons are needed in each cubic meter to produce the critical density? (me 9.11 x 10 31 kg) electrons/m (b) How many protons per cubic meter would produce the critical density? (mp 1.67 x 10 27 kg) protons/m a Show My Work ptional) Submit Answer...
Please make sure you give me the correct answer
13) The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. The energy density of deep space is 4.19 x 10-8 J/cm3 a, What is the peak wavelength of this radiation? b, Assuming the energy density of space is from these photons, how many photons are there on average in each cubic centimeter of space?
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