a laser with a red-light source gives off 1.5 moles of photons every second how much...
a laser with a red-light source gives off 1.5 moles of photons every second how much total energy in kJ, does the laser give off after 2 hours.? red=750nm
Homework Answers
Add Answer to:
a laser with a red-light source gives
off 1.5 moles of photons every second how much...
17 Calculate the energy associated with 3.00 moles of photons from red light with 750 nm...
17 Calculate the energy associated with 3.00 moles of photons from red light with 750 nm wavelength. A. 479 kJ B. 160 kJ C. 215 kJ D. 320 kJ E. 640 kJ
7. A 342 nm laser pulse contains 2.65 kJ of energy. How many moles of photons...
7. A 342 nm laser pulse contains 2.65 kJ of energy. How many moles of photons are in the laser pulse?
An LED emits red light at a wavelength of 670 nm. In one second, the LED...
An LED emits red light at a wavelength of 670 nm. In one second, the LED uses 8.0 J of energy to emit photons. How many photons does the LED emit in one second? 2.7*10^19 photons 2.7x10^28 photons 3.0x10^19 photons 2.4x10^18 photons
A photon of light produced by a certain laser has an energy of 3.297x10-19). Calculate the...
A photon of light produced by a certain laser has an energy of 3.297x10-19). Calculate the frequency (in Hz) and wavelength (in nm) of the photon. 1 4.976e14 Hz wavelength 2 2 6025 nm What is the total energy (in kJ) in 1 mole of these photons? 198.5 xk What is the color of the emitted light? violet blue green yellow orange red
How much energy does a photon of blue light with a wavelength of 465 nm have?...
How much energy does a photon of blue light with a wavelength of 465 nm have? How much energy does a photon of red light with a wavelength of 663 nm have? Photons of which color of light (red or blue) have greater energy? red or blue
Now rank each visible light color of the rainbow by how much ENERGY is carried by...
Now rank each visible light color of the rainbow by how much ENERGY is carried by its photons, ranking them from highest energy to lowest energy. If you answer incorrectly and need to change the order of your options, drag one item until it is directly on top of a second item. This will force the second item back into the sorting queue on the left, and open a blank space on the right with which you can re-order your...
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 produces a beam of light whose average power is 4W. How much energy...
a) A laser produces a beam of light whose average power is 4W. How much energy is stored in a 3m length of the beam? Use c=3*10^8 b) If the area of the beam in part a) is .001m^2, what is the average intensity of the beam? c) If unpolarized light had an average intensity equal to that found in part b), and it were passed first through a polarizer, then through an analyzer whose axis of transmission is tilted...
A 3 mW red ( = 670 nm) laser pointer produces a 2 mm diameter spot...
A 3 mW red ( = 670 nm) laser pointer produces a 2 mm diameter spot on a screen. a) If we place a f = 1cm lens before the screen, and the radius of curvature of the wavefront reaching the lens is 2 m, find the waist of the focused light. b) The intensity of the light at the center of the beam is given by Imax= 2P/πw2(in W/m2). Calculate the maximum intensity at the focal point. c) If...
Suppose we measure how much sleep students in first and second year at UVic get per...
Suppose we measure how much sleep students in first and second year at UVic get per night. A sample of 21 first year students slept an average of 7.9 hours per night with a standard deviation of 1.3 hours. A sample of 16 second year students slept an average of 6.8 hours per night with a standard deviation of 2.1 hours. Suppose we want to test if first year students sleep more than second year students. Assuming the number of...
17 Calculate the energy associated with 3.00 moles of photons from red light with 750 nm wavelength. A. 479 kJ B. 160 kJ C. 215 kJ D. 320 kJ E. 640 kJ
An LED emits red light at a wavelength of 670 nm. In one second, the LED uses 8.0 J of energy to emit photons. How many photons does the LED emit in one second? 2.7*10^19 photons 2.7x10^28 photons 3.0x10^19 photons 2.4x10^18 photons
A photon of light produced by a certain laser has an energy of 3.297x10-19). Calculate the frequency (in Hz) and wavelength (in nm) of the photon. 1 4.976e14 Hz wavelength 2 2 6025 nm What is the total energy (in kJ) in 1 mole of these photons? 198.5 xk What is the color of the emitted light? violet blue green yellow orange red
Now rank each visible light color of the rainbow by how much ENERGY is carried by its photons, ranking them from highest energy to lowest energy. If you answer incorrectly and need to change the order of your options, drag one item until it is directly on top of a second item. This will force the second item back into the sorting queue on the left, and open a blank space on the right with which you can re-order your...
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...
Suppose we measure how much sleep students in first and second year at UVic get per night. A sample of 21 first year students slept an average of 7.9 hours per night with a standard deviation of 1.3 hours. A sample of 16 second year students slept an average of 6.8 hours per night with a standard deviation of 2.1 hours. Suppose we want to test if first year students sleep more than second year students. Assuming the number of...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago