Question 3 At what rate does a star emit photons? For simplicity, assume that the star's...
At what rate does a star emit photons? For simplicity, assume that the star's entire emission at the rate of 4.4 × 1029 W is at the single wavelength of 550 nm.
Question 10 5 pts How many photons per second are emitted by a 5.5-W LED light bulb, if the emission is at a wavelength of 550 nm? 1.23E22 photons/s 5.07E21 photons/s 3.62E19 photons/s O 1.52E19 photons/s 0 4.27E19 photons/s
Question 10 5 pts How many photons per second are emitted by a 5.5-W LED light bulb, if the emission is at a wavelength of 550 nm? 123E22 photons/s O 5.07E21 photons/s O 3.62E19 photons/s O 1.52E19 photons/s 4.27E19 photons/s
Question 11 Assuming that your surface temperature is 98.4 F and that you are an ideal blackbody radiator (you are close), find (a) the wavelength at which your spectral radiancy is maximum, (b) the power at which you emit thermal radiation in a wavelength range of 0.940 nm at that wavelength, from a surface area of 3.90 cm?, and (c) the corresponding rate at which you emit photons from that area. Using a wavelength of 500 nm (in the visible...
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...
How many photons per second are emitted by a 5.5-W LED light bulb, if the emission is at a wavelength of 550 nm? 1.23E22 photons/s O 5.07E21 photons/s 3.62E19 photons/s O O 1.52E19 photons/s 4.27E19 photons/s Question 11 5 pts A rotating generator has a square planar coil consisting of 100 turns. The coil rotates 60 times per second in a magnetic field of 1.25T and yields a peak output voltage of 300 V. What is the length of one...
Answer both please
How many photons per second are emitted by a 5.5-W LED light bulb, if the emission is at a wavelength of 550 nm? O 1.23E22 photons/s 05.07E21 photons/s O 3.62E19 photons/s O 1.52E19 photons/s 4.27E19 photons/s Question 11 5 pt 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 permanent magnet. The magnetic field between the poles is...
Question 4 A mole of photons has an energy of 392 kJ. What is the wavelength of one photon? C 6.80 x 10-31 nm C 3.05 x 10-19 nm C 3.05 x 10-7 nm C 3.05 x 102 nm 6.80 x 102 nm Question 5
3. a beam of photons from lab investigation are found to have an energy of 1.1042 x 10^-5 joules/photons a) what is the frequency of light from these photons? b) what is the wavelength of light from these photons? c) what type of emission are these photons?
A red emission lone from a star has a wavelength of
650 nm.
A) What is the corresponding frequency?
B How much energy does each photon at this wavelength
carry?
Back HW 2.pdf SCIE 223: Astronomy Written Homework 2 due Thursday, November 21, 2019 A red emission line from a star has a wavelength of 650 nm. 1) What is the corresponding frequency? Show your work a. b. How much energy does each photon at this wavelength carry? Show your...