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
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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...
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...
1) How much is the value of a gold Cube of 1.00 inch edge length? The...
1) How much is the value of a gold Cube of 1.00 inch edge length? The density of gold is 19.3 g/ml. The price of gold is currently $1550 per ounce 2) A hot tub Contains 450 gal of water at 68°F. The heating element has 5.0 kW power (ic. it delivers 5 kJ heat energy per second). How many hours does it take to heat the hottub to lort? 3) The querage density of the Universe is calculated to...
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...
1) How much is the value of a gold Cube of 1.00 inch edge length? The density of gold is 19.3 g/ml. The price of gold is currently $1550 per ounce 2) A hot tub Contains 450 gal of water at 68°F. The heating element has 5.0 kW power (ic. it delivers 5 kJ heat energy per second). How many hours does it take to heat the hottub to lort? 3) The querage density of the Universe is calculated to...
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