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4) If a low-pressure sodium vapor lamp emits 100 W of yellow light (frequency = 5.26...
The yellow light from a sodium vapor lamp has a frequency of 5.08x1014 Hz. How much...
The yellow light from a sodium vapor lamp has a frequency of 5.08x1014 Hz. How much energy does each photon of that light carry? e= (answer) x 10^-19
A monochromatic lamp emits a 50.0 W beam of light which has a wavelength of 560...
A monochromatic lamp emits a 50.0 W beam of light which has a wavelength of 560 nm. (a) How many photons does the lamp emit each minute?
A sodium vapor light isotropically emits 15W of light energy at 589 nm. If your pupil...
A sodium vapor light isotropically emits 15W of light energy at 589 nm. If your pupil has a diameter of 4.5 mm, how many photons will pass into your eye every second from a distance of 12 m? 12 km? The threshold of seeing is about 5 photons/second. How far away can you see this 15W bulb? Note that the flux of a light source is the power absorbed/area.
A 100-W lamp operates at a temperature of10492.1 K. How many photons does it emit per...
A 100-W lamp operates at a temperature of10492.1 K. How many photons does it emit per second in the interval 5498 Angstrom to 6248 Angstrom?
a. A laser emits light that has a frequency of 4.69 x 1014 s-1
a. A laser emits light that has a frequency of 4.69 x 1014 s-1. What is the energy of one photon of this radiation? b. If the laser emits a pulse containing 5.0 x 1017 photons of this radiation, what is the total energy of that pulse? c. If the laser emits 1.3 x 10-2 J of energy during a pulse, how many photons are emitted?
If a 100-W lightbulb emits 3.5 % of the input energy as visible light (average wavelength...
If a 100-W lightbulb emits 3.5 % of the input energy as visible light (average wavelength 550 nm) uniformly in all directions. A.How many photons per second of visible light will strike the pupil (4.0 mm diameter) of the eye of an observer 1.3 m away? B.How many photons per second of visible light will strike the pupil (4.0 mm diameter) of the eye of an observer 1.3 km away?
26. A sodium vapor lamp has a power output of 300 W. If 390 nm is...
26. A sodium vapor lamp has a power output of 300 W. If 390 nm is the average wavelength of the source, about how many photons are emitted per secood? (h 1 nm- 10* m) 6.63 x 10Js, c 3.00x 10* m/s, and a. 10 b, 1021 e, 10s d. 10 27. The "seeing" ability or resolution of radiation is determined by its wavelength. If the size of an atom is approximately 10* m, how fast must an electron travel...
KCh 27 HW Item 17 17 of 28> ns If a 100-W lightbulb emits 3.0 %...
KCh 27 HW Item 17 17 of 28> ns If a 100-W lightbulb emits 3.0 % of the input energy as visible light (average wavelength 550 nm) uniformly in all directions Part A How many photons per second of visible light will strike the pupil (4.0 mm diameter) of the eye of an observer 2.5 m away? Express your answer using two significant figures A6.629 10 photons/s Submit Previous Answers Request Answer XIncorrect; Try Again; 5 attempts remaining Part B...
Question 10 5 pts Aradio antenna emits EM waves at a frequency of 100 MHz and...
Question 10 5 pts Aradio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E12 photons/cubic meter 1.0E16 photons/cubic meter OO 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter Question 11 5 pts A square planar loop of coiled wire has a length of 0.25 m on a side and is rotated 60 times per second between the poles of a...
Problem 4: This problem deals with black bodies, photons and lasers. Martin runs out of light...
Problem 4: This problem deals with black bodies, photons and lasers. Martin runs out of light bulbs and decides to make one. He takes a 10 cm long wire with the circular cross-section of radius 1 mm. He hooks it up to electricity and manages to heat it up to 1300 K. • How many photons per second in a wavelength interval of 0.05 nm, cen- tered at 500 nm, does this wire emit? (6 points). • How strong laser...
a. A laser emits light that has a frequency of 4.69 x 1014 s-1. What is the energy of one photon of this radiation? b. If the laser emits a pulse containing 5.0 x 1017 photons of this radiation, what is the total energy of that pulse? c. If the laser emits 1.3 x 10-2 J of energy during a pulse, how many photons are emitted?
26. A sodium vapor lamp has a power output of 300 W. If 390 nm is the average wavelength of the source, about how many photons are emitted per secood? (h 1 nm- 10* m) 6.63 x 10Js, c 3.00x 10* m/s, and a. 10 b, 1021 e, 10s d. 10 27. The "seeing" ability or resolution of radiation is determined by its wavelength. If the size of an atom is approximately 10* m, how fast must an electron travel...
KCh 27 HW Item 17 17 of 28> ns If a 100-W lightbulb emits 3.0 % of the input energy as visible light (average wavelength 550 nm) uniformly in all directions Part A How many photons per second of visible light will strike the pupil (4.0 mm diameter) of the eye of an observer 2.5 m away? Express your answer using two significant figures A6.629 10 photons/s Submit Previous Answers Request Answer XIncorrect; Try Again; 5 attempts remaining Part B...
Question 10 5 pts Aradio antenna emits EM waves at a frequency of 100 MHz and intensity of 0.2 W/m2. What is the photon density in one cubic meter of the beam? 1.0E12 photons/cubic meter 1.0E16 photons/cubic meter OO 1.0E20 photons/cubic meter 1.4E31 photons/cubic meter 6.1E32 photons/cubic meter Question 11 5 pts A square planar loop of coiled wire has a length of 0.25 m on a side and is rotated 60 times per second between the poles of a...
Problem 4: This problem deals with black bodies, photons and lasers. Martin runs out of light bulbs and decides to make one. He takes a 10 cm long wire with the circular cross-section of radius 1 mm. He hooks it up to electricity and manages to heat it up to 1300 K. • How many photons per second in a wavelength interval of 0.05 nm, cen- tered at 500 nm, does this wire emit? (6 points). • How strong laser...
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