Which of the following is a feature of blackbody emission spectra? O The spectrum is discrete. O The spectrum is observed only in the ultraviolet region. O The total radiated power varies as temperature to the second power. O The peak of the curve shifts with temperature.
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- What temperature, in °C, is a blackbody whose emission spectrum peaks at 320 nm ? T= Submit Request Answer Part B VE ΑΣΦ T= Submit What temperature, in °C, is a blackbody whose emission spectrum peaks at 4.60 m? VE ΑΣΦ P By Request Answer ? Stag °C ? °C·Shown here is the visible part of the spectrum of some gas. There are 11 lines. There could be 6. more, they just aren't in the wavelength range of the spectrum. The wavelength increases toward the right. :.. de f gh k (a) Which line or lines correspond(s) to the two closest spaced energy levels? Explain. (b) Which line or lines correspond(s) to the two farthest spaced energy levels? Explain. (c) What is the minimum number of energy levels in an atom of the gas that could produce the lines in this spectrum? Explain.The human eye is most sensitive to 560-nm (green) light. What is the temperature of a blackbody that would radiate most intensely at this wavelength?
- Part A Estimate the number of photons emitted by the Sun in a year. (Take the average wavelength to be 550 nm and the intensity of sunlight reaching the Earth (outer atmosphere) as 1350 W/m².) VE ΑΣΦ 3.74 10 ● Submit ? Previous Answers Request Answer photons/yrThe energy-level diagram for the atomic emission spectra of an unknown gas is presented in the diagram below. n = 4 4.0 ev n = 3 1.8 eV n = 2 1.5 ev n=1 O ev Part A Initially, electrons are only in the ground state (n=1). A beam of red light hits the gas. This beam is a continuous spectrum of red light (from 620 nm to 750 nm) How many absorption line/s will there be in the spectra? 1 Correct Part B Initially, electrons are only in the ground state (n=1). A beam of red light hits the gas. This beam is a continuous spectrum of red light (from 620 nm to 750 nm) Calculate the wavelength of the absorption line ? da = nm Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remainingThe intensity of light reaching Earth is about 1400 W/m². Part A Determine the number of photons reaching a 1.0-m² area each second. Assume that the wavelength of the photons hitting the Earth is 520 nm. Express your answer in photons. N = Submit IVE ΑΣΦ Request Answer ? photons
- can you solve C pleasePart A What is the energy range (in joules) of photons of wavelength 390 nm to 740 nm ? Express your answers using two significant figures separated by a comma. ? Emin. Emax = J Submit Request Answer Part B What is the energy range (in eV) of photons of wavelength 390 nm to 740 nm ? Express your answers using two significant figures separated by a comma. ? Emin. Emax = eV Submit Request Answer Provide FeedbackWhat is the energy range (in joules and eV) of photons in the visible spectrum, of wavelength 410 nm to 740 nm ? Express your answers using two significant figures. Enter your answers numerically separated by a comma. ΜΕ ΑΣΦ Emin, Emax = Submit Request Answer Part B ? J Express your answers using two significant figures. Enter your answers numerically separated by a comma. Emin, Emax = Η ΑΣΦ ? eV Submit Request Answer