Use the following information for the next three questions: The sun has a radius of 695,700...
Use the following information for the next three questions: The sun has a radius of 695,700 km and emits blackbody radiation at a temperature of 5778 K.
Assuming that all of the sun's radiation is emitted at the peak wavelength, find the number of photons emitted by the sun per second.
9.7 x 1014
9.7 x 1024
9.7 x 1044
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Use the following information for the next three questions: The
sun has a radius of 695,700...
80. The sun is a sphere with a radius of 6.96 X 10a m and an...
80. The sun is a sphere with a radius of 6.96 X 10a m and an av- erage surface temperature of 5800 K. Determine the amount by which the sun's thermal radiation increases the entropy of the entire universe each second. Assume that the sun is a perfect blackbody, and that the average temperature of the rest of the universe is 2.73 K. Do not con- sider the thermal radiation absorbed by the sun from the rest of the universe.
Number three please The temperature of a student's skin is 33.0 degree C. At what wavelength...
Number three please
The temperature of a student's skin is 33.0 degree C. At what wavelength does the radiation emitted from the skin reach its peak? The radius of our Sun is 6.96 times 10^8 m, and its total power output is 3.85 times 10^26 W. (a) Assuming the Sun's surface emits as a black body, calculate its surface temperature. (b) Using the result of part (a), find lambda_max for the Sun. Calculate the energy in electron volts of a...
The Sun shines with a blackbody temperature of 5780 K and a total power output of 3.8 x 1026 w. The Sun has been doing this for 4.5 x 10 yr, during which time the surface temperature has increased by...
The Sun shines with a blackbody temperature of 5780 K and a total power output of 3.8 x 1026 w. The Sun has been doing this for 4.5 x 10 yr, during which time the surface temperature has increased by a few percent and the luminosity by 20%, ie. they have remained roughly constant. (a) (5 marks) Use the heat-flow formula for entropy change to calculate the total entropy in all the sunlight the Sun has ever emitted. (b) (3...
2. The average person has 1.4 m2 of skin at a skin temperature of roughly 305...
2. The average person has 1.4 m2 of skin at a skin temperature of roughly 305 K (90°F) Consider the average person to be an ideal radiator standing in a room at a temperature of 293 K (68°F) (a) Calculate the power (energy per uni i) radiated by the average person in the form of blackbody radiation; express your answer in erg s-1. What is the person's "wattage"? (1 W = 107 erg s-1) Compare this to a typical incandescent...
What was the temperature anomaly in Buffalo, NY on August 27 , 2019? Give your answer...
What was the temperature anomaly in Buffalo, NY on August 27 ,
2019? Give your answer in °C. Answers within ±3°C of the correct
answer are marked correct.
The long-term average temperature for August in Buffalo is 20
°C. Using this information and your answer from Q8, what was the
temperature in Buffalo on August 27, 2019? Give your answer in
°C.
Hotter objects emit _________ than cooler objects
a. more energy at redder wavelengths
b. more energy at bluer...
Electromagnetic Wave Questions 2. Our sun has a power output of roughly 3.87 1026 watts (W)....
Electromagnetic Wave Questions
2. Our sun has a power output of roughly 3.87 1026 watts (W). This energy is transmitted essentially uniformly in all directions. By the time this radiation reaches the Earth, which has an average distance from the sun of 1.50 x 10" m, what is the intensity? (Recall that intensity is defined to be power per unit area). 3. The energy from the sun is primarily in the infrared and visual wavelengths. The following table gives the...
I need the answers to these nine questions. They are attached below. Please answer all of...
I need the answers to these nine questions. They are attached
below. Please answer all of them. Thank you so much in advance!
Which of the following is the correct statement? ● A photon of yellow light has more energy than a photon of ultraviolet light. O A photon of yellow light has less energy than a photon of ultraviolet light. O A photon of yellow light has less energy than a photon of red light. O A photon of...
Use the following information for the next three (3) questions: In the table below, X represents...
Use the following information for the next three (3) questions: In the table below, X represents the number of long distance calls made by a store manager to suppliers during one hour. X 0 1 2 34 19, P(X 2) = (a) 0.2 (b) 0.3 (c) 0.4 (d) 0.7 20. Calculate the expected number of calls (μ) during one hour. (a) μ-10 (b) μ-2 (c) μ = 0.4 (d) μ=0.2
Question 3: (8 points) (a) A photodetector has an effective area of 6x102 cm. It is...
Question 3: (8 points) (a) A photodetector has an effective area of 6x102 cm. It is illuminated with 700nm laser light that has an intensity of 2.5mW/cm². Assuming each three photons generate one electron-hole pair on average, calculate the generated photocurrent. (b) A 40 nW optical power at 1555 nm is incident on APD. The APD has refractive index of 3.5, and its multiplication factor is 12. It is efficiency without avalanche breakdown is 80%. Find: a) The responsivity of...
Use the following information for the next 3 questions. Metro Health & Spa offers three membership...
Use the following information for the next 3 questions. Metro Health & Spa offers three membership programs: Platinum, Gold and Silver. Metro incurs annual fixed costs of $19,200,000 Additional information about the programs is presented below Platinum Gold Silver 30,000 150,000120,000 $2,500 $1,000 $800 Variable cost per membership $1,000 $500 $200 Memberships sold Membership price 13. What is the weighted-average unit contribution margin? 14. Assuming that the sales mix of memberships remains constant, what is the total number of memberships...
80. The sun is a sphere with a radius of 6.96 X 10a m and an av- erage surface temperature of 5800 K. Determine the amount by which the sun's thermal radiation increases the entropy of the entire universe each second. Assume that the sun is a perfect blackbody, and that the average temperature of the rest of the universe is 2.73 K. Do not con- sider the thermal radiation absorbed by the sun from the rest of the universe.
Number three please
The temperature of a student's skin is 33.0 degree C. At what wavelength does the radiation emitted from the skin reach its peak? The radius of our Sun is 6.96 times 10^8 m, and its total power output is 3.85 times 10^26 W. (a) Assuming the Sun's surface emits as a black body, calculate its surface temperature. (b) Using the result of part (a), find lambda_max for the Sun. Calculate the energy in electron volts of a...
The Sun shines with a blackbody temperature of 5780 K and a total power output of 3.8 x 1026 w. The Sun has been doing this for 4.5 x 10 yr, during which time the surface temperature has increased by a few percent and the luminosity by 20%, ie. they have remained roughly constant. (a) (5 marks) Use the heat-flow formula for entropy change to calculate the total entropy in all the sunlight the Sun has ever emitted. (b) (3...
2. The average person has 1.4 m2 of skin at a skin temperature of roughly 305 K (90°F) Consider the average person to be an ideal radiator standing in a room at a temperature of 293 K (68°F) (a) Calculate the power (energy per uni i) radiated by the average person in the form of blackbody radiation; express your answer in erg s-1. What is the person's "wattage"? (1 W = 107 erg s-1) Compare this to a typical incandescent...
What was the temperature anomaly in Buffalo, NY on August 27 ,
2019? Give your answer in °C. Answers within ±3°C of the correct
answer are marked correct.
The long-term average temperature for August in Buffalo is 20
°C. Using this information and your answer from Q8, what was the
temperature in Buffalo on August 27, 2019? Give your answer in
°C.
Hotter objects emit _________ than cooler objects
a. more energy at redder wavelengths
b. more energy at bluer...
Electromagnetic Wave Questions
2. Our sun has a power output of roughly 3.87 1026 watts (W). This energy is transmitted essentially uniformly in all directions. By the time this radiation reaches the Earth, which has an average distance from the sun of 1.50 x 10" m, what is the intensity? (Recall that intensity is defined to be power per unit area). 3. The energy from the sun is primarily in the infrared and visual wavelengths. The following table gives the...
I need the answers to these nine questions. They are attached
below. Please answer all of them. Thank you so much in advance!
Which of the following is the correct statement? ● A photon of yellow light has more energy than a photon of ultraviolet light. O A photon of yellow light has less energy than a photon of ultraviolet light. O A photon of yellow light has less energy than a photon of red light. O A photon of...
Use the following information for the next three (3) questions: In the table below, X represents the number of long distance calls made by a store manager to suppliers during one hour. X 0 1 2 34 19, P(X 2) = (a) 0.2 (b) 0.3 (c) 0.4 (d) 0.7 20. Calculate the expected number of calls (μ) during one hour. (a) μ-10 (b) μ-2 (c) μ = 0.4 (d) μ=0.2
Question 3: (8 points) (a) A photodetector has an effective area of 6x102 cm. It is illuminated with 700nm laser light that has an intensity of 2.5mW/cm². Assuming each three photons generate one electron-hole pair on average, calculate the generated photocurrent. (b) A 40 nW optical power at 1555 nm is incident on APD. The APD has refractive index of 3.5, and its multiplication factor is 12. It is efficiency without avalanche breakdown is 80%. Find: a) The responsivity of...
Use the following information for the next 3 questions. Metro Health & Spa offers three membership programs: Platinum, Gold and Silver. Metro incurs annual fixed costs of $19,200,000 Additional information about the programs is presented below Platinum Gold Silver 30,000 150,000120,000 $2,500 $1,000 $800 Variable cost per membership $1,000 $500 $200 Memberships sold Membership price 13. What is the weighted-average unit contribution margin? 14. Assuming that the sales mix of memberships remains constant, what is the total number of memberships...
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