How many photons per second are emitted by the antenna of a microwave oven, if its power output is 1.15 kW at a frequency of 2570 MHz? photons/s Additional Materials
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- How many photons per second are emitted by the antenna of a microwave oven if its power output is 1 kW at a frequency of 2560 MHz? photons/sAn x-ray of strikes a free electron and scatters with a wavelength of 0.1252 nm at 60.0°. a. What is the wavelength of the incident photon (from the x-ray source)? b. Calculate the wavelength of an x-ray that is scattered at 30.0° scattered photon incident photon target electron scattered electronYour answer is partially correct. A spectral emission line is electromagnetic radiation that is emitted in a wavelength range narrow enough to be taken as a single wavelength. One such emission line that is important in astronomy has a wavelength of 21 cm. What is the photon energy in the electromagnetic wave at that wavelength? Number 9.465714286 Units eV
- A proton has a de Broglie wavelength of 81.20 fm. What is its speed? m/scertain photon has a wavelength of 625 nm. Determine the frequency and energy of the photon.0.2 eV 0.9 eV 1.1 eV A metal with a work function of 3.5 electron volts is exposed to photons of energy 3.7 electron volts. What is the maximum kinetic energy of the emitted photoelectrons? 7.7 eV
- Item 5 An AM radio station operating at a frequency of 815 kHz radiates 310 kW of power from its antenna. ▬ ▬▬▬ Q Search ¯ Part A How many photons are emitted by the antenna every second? Express your answer using two significant figures. 15| ΑΣΦ N = Submit Provide Feedback Request Answer D ? photons/sOne of the first signs of sunburn is the reddening of the skin (called erythema). As a very rough rule of thumb, erythema occurs if 14.0 mJ of ultraviolet light of approximately 308 nm wavelength (referred to as UVB radiation) is incident on the skin per square centimeter during a single exposure. How many photons are incident on 1.00 cm2 of skin in this amount of exposure? photonsA metal has a work function of 3.1eV and is illuminated by light of wavelength A = 320 nm. What is the maximum velocity of the photoelectrons emitted? Select one: а. 2.7 x 106 m/s b. 3.2 x 10' m/s С. 5.9 x 105 m/s O d. 5.24 x 105 m/s
- 10% of the energy supplied to a bulb is radiated as visible light. How many photons are emitted per second by a 50 W bulb? Take the wavelength of visible light as 660 nm. A. 2.66 x 1019 B. 1.66 x 1020 C. 1.66 x 1019 D. 2.66 x 1020How many photons per second are emitted by the antenna of a microwave oven, if its power output is 1.25 kW at a frequency of 2510 MHz? _______ photons/s