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Chapter 8: Problem 90

Electromagnetic radiation can be transmitted through a vacuum or empty space. Can heat be similarly transferred? Explain.

Short Answer

Expert verified
Yes, heat can be transferred through a vacuum or empty space, but this is only possible through radiation. Unlike electromagnetic radiation, which can be transmitted through a vacuum or empty space directly, other modes of heat transfer (conduction and convection) require a medium.

Step by step solution

01

Understanding Heat Transfer

Heat is transferred by three processes - Conduction, Convection, and Radiation. Conduction requires physical contact of molecules, Convection is the movement of heat by the movement of heated particles in gases or liquids, and Radiation is the transfer of heat in form of waves.
02

Understanding Electromagnetic Radiation

Electromagnetic radiation includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, and can be transmitted through vacuum or empty space.
03

Comparing Heat Transfer and Electromagnetic Radiation

Among the three modes of heat transfer, only radiation can occur in a vacuum. Conduction and convection require a medium (like a solid, liquid, or gas) to transfer heat. Therefore, similar to the transmission of electromagnetic radiation, heat can also be transferred in a vacuum or empty space but only through radiation.

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Most popular questions from this chapter

The magnesium spectrum has a line at \(266.8 \mathrm{nm}\). Which of these statements about this radiation is (are) correct? Explain. (a) It has a higher frequency than radiation with wavelength \(402 \mathrm{nm}\) (b) It is visible to the eye. (c) It has a greater speed in a vacuum than does red light of wavelength \(652 \mathrm{nm}\) (d) Its wavelength is longer than that of X-rays.

What must be the velocity of electrons if their associated wavelength is to equal the radius of the first Bohr orbit of the hydrogen atom?

Draw an energy-level diagram that represents all the possible lines in the emission spectrum of hydrogen atoms produced by electron transitions, in one or more steps, from \(n=5\) to \(n=1\).

What is \(\Delta E\) for the transition of an electron from \(n=5\) to \(n=2\) in a Bohr hydrogen atom? What is the frequency of the spectral line produced?

Identify the orbital that has (a) two radial nodes and one angular node; (b) five radial nodes and zero angular nodes; (c) one radial node and four angular nodes.
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