Why do atoms absorb and reemit radiation at characteristic frequencies?
Q: If energy is radiated by all objects, why can we not see themin the dark?
A: energy is radiated
Q: Discuss the physical origins of the gross selection rules for microwave and infrared spectroscopy
A: For microwave spectroscopy, the origin of the gross selection rule is transition dipole moment.
Q: How many watts will radiated from a spherical black body 15cm in diameter at a temperature of 600…
A: Answer :- the surface area of the spherical body A = 4πR2 A = 4 × 3.14 × ( .075 )2…
Q: An FM radio station broadcasts at 84 megahertz (MHz). What is the energy of each photon in Joule?…
A:
Q: A certain blackbody emits electromagnetic radiation at 2500K. What is the wavelength of the…
A: From the Wien's law, λT=constant=2.898×10-3 m.K…
Q: A photon of light is emitted from an atom with an energy of 50keV. What form of electromagnetic…
A:
Q: When you throw a baseball, its de Broglie wavelength is(a) the same size as the ball.(b) about the…
A: de Broglie wavelength
Q: A blackbody at 200 K is emitting to surroundings. (a)- Calculate the wavelength at which the…
A: Solution: (a). Use the Wien displacement formula to find the wavelength corresponding to maximum…
Q: c) Consider a spherical surface of radius r = 5a centered at p. Find the total electric flux through…
A: Electric flux will be due to all three charges as within the surface all charge will be inclosed
Q: If the energy received by 5 m² area in 560 seconds is 2880 KJ. Calculate the value of Solar constant…
A: Introduction : In this question we are provided with value of area , time and energy. With these…
Q: Calculate the temperature of a blackbody that peaks at a frequency of 7.5·108 MHz.
A: Given Fmax = 7.5 x 108 MHz = 7.5 x 108 x 106 Hz
Q: Then, why the answers are different when I use different formulas, dB= 10log (I/ I0) and I= I0…
A: We need to explain why the answers are different when the student used different formulas, dB= 10log…
Q: We know that an incandescent lamp filament at 2500 K radiates white light. Does the lamp filament…
A: A lamp filament will emit radiation energy at all temperatures higher than absolute zero. The peak…
Q: on at a Javelength of 5000 Å is approaching the earth with a velocity of 1.50× 106 ms-'. Calculate…
A: Here, we calculate the given as follow;
Q: What is the frequency of a photon with wavelength of 400nm?
A: Given that,Wavelength, λ=400 nm=400×10-9 mWe know thatspeed, c=λfthen frequency, f=cλ equation…
Q: What is the energy in joules of a photon in a radio wave from an AM station that has a 1530-kHz…
A: Given : Frequency = 1530 kHz To find : Energy of photon
Q: Since an absorbing gas re-emits the light it absorbs, why are there dark lines in an absorption…
A: Absorption spectra: The atoms do not only emit photons, they also absorb photons. If the energy gap…
Q: What is EM Radiation by your own words?
A: EM Radiation- The vibrations created between electric field and magnetic field is called…
Q: he blackbody radiation emitted from a furnace peaks at a wavelength of 2.5 10-6 m (0.0000025 m).…
A: Use Wein displacement law
Q: What is the wavelength of a radio photon from an "AM" radio station that broadcasts at 1260…
A: Given that, Frequency, f = 1260 kHz Speed of light, c = 3x108 m/s We know that,λf=c…
Q: What is the frequency and wavelength of a 50 meV gamma-ray photon?
A: E=hf50 MeV1.60×10-13 J1 MeV=6.63×10-34 J·sff=1.21×1022 Hz
Q: Ordinary glass is transparent to visible light but largely opaque to ultravioletradiation. Why?
A: Based on a material's composition and property, a specific wavelength or a range of wavelengths…
Q: If the energy received by 2 m² area in 250 seconds is 1180 KJ. Calculate the value of Solar constant…
A: Introduction : In this question we are provided with value of energy , area and time . with these…
Q: Human skin is opaque to visible light but transparent to X-rays. Why?
A: If the material is transparent to the particular frequency, then the wave can largely be…
Q: Since energy is radiated by all objects, why can't we see them in dark?
A: Radiation emitted from all the objects doesn’t have the same wavelength. A normal human eye can…
Q: When two spherical soap bubbles coalesce , V is the consequent change in the volume of contained air…
A: Given, V is the consequent change in in the volume of contained air and S is the change in total…
Q: Calculate energy radiated by a perfectly black sphere of radius 2 cm in one minute maintained at…
A:
Q: A ball of mass m = 1.04kg has its position as a function of time given by F(t) = (5m + 1.97m cos…
A: Given,Mass of ball (m) =1.04kgPosition To find,Angular momentum of particle at t = 1.48 sec.
Q: Exercise 2. Electrons in the outer and inner Van Allen radiation belts have energy as listed below.…
A: Given that, Outer radiation belt: Ek = 4.0 x 10^4 eV Inner radiation belt: Ek = 1.6 x 10^6 eV
Q: Calculate the peak wavelength emitted by Sun if it was a blackbody.
A: Sun is the star located at the center of our solar system and belongs to the main sequence stars.…
Q: How is the peak frequency of emitted light related to the temperature of its incandescent source?
A: From Wien’s law, the relation between temperature and wavelength is:
Q: A star’s spectrum emits more radiation with a wavelength of 690.0 nm than with any other wavelength.…
A: Wavelength = 690 nm Radius of star = 7.20 × 108 m It is given as a condition that the star is 9.78…
Q: Calculate the wavelength of a photon that has energy 2.83 × 10−19 Joules. Give your answer in units…
A: Given, Energy of photon E = hf= hc/λ = 2.83 × 10−19 J f is frequency and c is velocity of light…
Q: What is the rate of energy radiation per unit area of a blackbody at a temperature of (a) 300 K and…
A: Write the expression for Stephan’s Law ,
Q: A section of superconducting wire carries a current of 100 A and requires 1.00 L of liquid nitrogen…
A: Given , Current I = 100 A 1.00 L of liquid nitrogen per hour is required to keep the semiconductor…
Q: The blackbody radiation emitted from a furnace peaks at a wavelength of 3.3 10-6 m (0.0000033 m).…
A:
Q: 2. The power of high power laser beams is often measured using a water-cooled optical calorimeter.…
A: Magnitude of temperature RiseΔT. Given, Power of beamP=1 kW=1000 WFlow rate of waterQ=1…
Q: If a black body is heated 27°C to 927°C. Then the ratio of radiation emitted will be (a) 1:4 (b)…
A: To find-Ratio of heat radiated=?Given-T1=270CT1=(27+273)=3000KT2=9270CT2=12000 K
Q: For a blackbody at given temperature, Amax is the wavelength at the peak of the radiation…
A: According to Wien’s displacement theory of black body radiation, the spectral radiance in black body…
Q: The temperature of human skin is approximately 34°C. Calculate the peak wavelength of the radiation…
A:
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