Compute a rough estimate of the number of photons emitted each second by a 100-W lightbulb. You might make the simplifying assumptions that (1) all of the electrical energy is converted into radiant energy and (2) the “average” photon that is emitted has an energy corresponding to the peak of the BBR curve for an object at 3,000 K

Compute a rough estimate of the number of photons emitted each second by a 100-W lightbulb. You might make the simplifying assumptions that (1) all of the electrical energy is converted into radiant energy and (2) the “average” photon that is emitted has an energy corresponding to the peak of the BBR curve for an object at 3,000 K

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter10: Atomic Physics

Section: Chapter Questions

Problem 4C

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Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

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4. Compute a rough estimate of the number of photons emitted each second by a 100-W lightbulb. You might make the simplifying assumptions that (1) all of the electrical energy is converted into radiant energy and (2) the “average” photon that is emitted has an energy corresponding to the peak of the BBR curve for an object at 3,000 K (refer to Section 8.6)

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