Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 8, Problem 14P
To determine
The frequency of the
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The temperature of a student’s skin is 33.0°C. At what wavelength does the radiation emitted from the skin reach its peak?
The temperature of a student's skin is 33.0°C. At what wavelength does the radiation emitted from the skin reach its peak?
um
You are using a radiometer to observe the thermal radi-
ation from an object that is heated to maintain its tem-
perature at 1278 K. The radiometer records radiation in
a wavelength interval of 12.6 nm. By changing the wave-
length at which you are measuring, you set the radiome-
ter to record the most intense radiation emission from
the object. What is the intensity of the emitted radiation
in this interval?
Chapter 8 Solutions
Inquiry into Physics
Ch. 8 - Give two lessons that may be learned from the...Ch. 8 - Prob. 1AACh. 8 - Prob. 2AACh. 8 - Prob. 1PIPCh. 8 - Prob. 2PIPCh. 8 - Prob. 1MIOCh. 8 - Prob. 2MIOCh. 8 - Prob. 1QCh. 8 - Prob. 2QCh. 8 - (Indicates a review question, which means it...
Ch. 8 - Prob. 4QCh. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 6QCh. 8 - Prob. 7QCh. 8 - Prob. 8QCh. 8 - Prob. 9QCh. 8 - Prob. 10QCh. 8 - Prob. 11QCh. 8 - Prob. 12QCh. 8 - Prob. 13QCh. 8 - Prob. 14QCh. 8 - Prob. 15QCh. 8 - Prob. 16QCh. 8 - (Indicates a review question, which means it...Ch. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 19QCh. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 21QCh. 8 - Prob. 22QCh. 8 - (Indicates a review question, which means it...Ch. 8 - Prob. 24QCh. 8 - Prob. 25QCh. 8 - Prob. 26QCh. 8 - Prob. 27QCh. 8 - Prob. 28QCh. 8 - Prob. 29QCh. 8 - Prob. 30QCh. 8 - Prob. 31QCh. 8 - Prob. 32QCh. 8 - Prob. 33QCh. 8 - Prob. 34QCh. 8 - Prob. 35QCh. 8 - Prob. 36QCh. 8 - Prob. 37QCh. 8 - Prob. 38QCh. 8 - The charger cord used to recharge a cell phone...Ch. 8 - The generator at a power plant produces AC at...Ch. 8 - Compute the wavelength of the carrier wave of your...Ch. 8 - What is the wavelength of the 60,000-Hz radio wave...Ch. 8 - Compute the frequency of an EM wave with a...Ch. 8 - Prob. 6PCh. 8 - Determine the range of wavelengths in the UV...Ch. 8 - A piece of iron is heated with a torch to a...Ch. 8 - The filament of a light bulb goes from a...Ch. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Earth’s magnetic field lines are not parallel to...Ch. 8 - A cyclometer is a device mounted on a bicycle that...Ch. 8 - Prob. 3CCh. 8 - The right-hand rule is a way to determine the...Ch. 8 - Prob. 5CCh. 8 - If a coil of wire is connected to a very sensitive...Ch. 8 - Prob. 7CCh. 8 - Prob. 8CCh. 8 - Prob. 9CCh. 8 - Prob. 10CCh. 8 - Prob. 11C
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- To measure temperatures, physicists often use the variation of intensity of EM radiation emitted by an object. The wavelength at which the intensity is greatest is given by the equation: λmaxT = 0.2898 cm.K where λmax is the wavelength of greatest intensity and T is the temperature of the object in kelvins. In 1965, microwave radiation peaking at λmax = 0.107 cm was discovered coming in all directions from space. To what temperature, in a) K b) °C c) °F, does this wavelength correspond?arrow_forwardWhat is the frequency od the most intense radiation from an object with temperature 100 C? Answer : 3.9*10^13 Hzarrow_forwardThe temperature of human skin is approximately 34°C. Calculate the peak wavelength of the radiation emitted from the skin.arrow_forward
- The temperature of an object is 163°C. What is the peak wavelength (in µm) of the radiation emitted by the object at this temperature?arrow_forwardA rectangular metal plate measures 0.24 m long and 0.7 m wide. The plate is heated to a temperature of 1,533 K by passing a current through it. Assuming that it behaves like a blackbody, how much power does the plate radiate under these conditions?arrow_forwardWhat is the energy, in eV, of a light wave with a wavelength of 700 nvm?arrow_forward
- mich type of electromagnetic radiation has a wavelength slightly larger than the light that is visible to humans? gamma rays Infrared ) ultravlolet O radlo waves PREVIC DELL [O 共 24 % 3. 4. 6. b n marrow_forwardA photon has an energy of 2.44x10^-22 J. What is its frequency?arrow_forwardThe energy flux from the sun has a peak value of around 1500 W/m2, and solar cells are around 15% efficient. Estimate the area needed to satisfy US energy needs using solar cells, using the estimates that there are about 350 million people in the US and that we use an average of 90 kW/person. Also assume that there are about 6 hours of "peak" sunlight per day. Answer in square kilometers (do not put units in your answer, however).arrow_forward
- The incident radiation on the earth's surface can be approximated by Ii = In cos 0, where In = 80 W/m2. sr is the total radiation intensity directed perpendicular to the surface. What is the total irradiation at the surface of the earth?arrow_forwardAt what wavelength is the radiation emitted by the human body at its maximum? Assume a temperature of 37°C.arrow_forwardThe temperature of the human body is 37 deg C. The intensity of radiation emitted by the human body is maximum at a wavelength?arrow_forward
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