Domanda del libro di testo
The familiar phenomenon of a rainbow results from the diffraction of sunlight through raindrops. (a) Does the wavelength of light increase or decrease as we proceed outward from the innermost band of the rainbow?
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Ch.6 - Electronic Structure of Atoms
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
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Capitolo 6, Problema 2d
A popular kitchen appliance produces electromagnetic radiation with a frequency of 2450 MHz. With reference to Figure 6.4, answer the following: (d) Which of the following is the appliance likely to be? (i) A toaster oven, (ii) A microwave oven, or (iii) An electric hotplate.
Guida verificata passo dopo passo1
First, understand that different appliances use different types of electromagnetic radiation. The electromagnetic spectrum includes a range of waves with different frequencies and wavelengths, from radio waves to gamma rays.
Next, note that the frequency given in the problem, 2450 MHz, is in the microwave range of the electromagnetic spectrum. Microwaves are a type of electromagnetic radiation that is used in microwave ovens to heat food.
Then, consider the appliances listed in the question. A toaster oven and an electric hotplate use heat to cook food, not electromagnetic radiation. Therefore, they would not operate in the microwave range of the electromagnetic spectrum.
Finally, based on the information above, the appliance that produces electromagnetic radiation with a frequency of 2450 MHz is likely to be a microwave oven.
Remember, always refer to the electromagnetic spectrum when dealing with questions about the type of radiation produced by different appliances or devices.
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Electromagnetic Radiation
Electromagnetic radiation refers to waves of energy that travel through space at the speed of light. It encompasses a range of frequencies and wavelengths, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The frequency of the radiation determines its type and properties, with microwaves typically ranging from 300 MHz to 300 GHz.
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Percorso guidato
01:02
Electromagnetic Radiation Example
Microwave Frequency
Microwaves are a specific type of electromagnetic radiation characterized by their frequency range, which is generally between 300 MHz and 300 GHz. The frequency of 2450 MHz falls within this range, making it suitable for applications like microwave ovens, which utilize this frequency to excite water molecules in food, generating heat and cooking the food efficiently.
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Percorso guidato
00:31Frequency-Wavelength Relationship
Appliance Functionality
Different kitchen appliances operate based on distinct principles and energy sources. A toaster oven uses radiant heat to cook food, an electric hotplate uses direct electric heating, while a microwave oven uses electromagnetic radiation to heat food. Understanding the operational principles of these appliances helps in identifying which one corresponds to the given frequency of 2450 MHz.
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Percorso guidato
03:37Logarithmic Functions
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Domanda del libro di testo
Stars do not all have the same temperature. The color of light emitted by stars is characteristic of the light emitted by hot objects. Telescopic photos of three stars are shown below: (i) the Sun, which is classified as a yellow star, (ii) Rigel, in the constellation Orion, which is classified as a blue-white star, and (iii) Betelgeuse, also in Orion, which is classified as a red star. (a) Place these three stars in order of increasing temperature. (i) sun (ii) Rigel (iii) Betelguese
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Domanda del libro di testo
A popular kitchen appliance produces electromagnetic radiation with a frequency of 2450 MHz. With reference to Figure 6.4, answer the following: (a) Estimate the wavelength of this radiation.
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Domanda del libro di testo
A popular kitchen appliance produces electromagnetic radiation with a frequency of 2450 MHz. With reference to Figure 6.4, answer the following: (c) If the radiation is not visible, do photons of this radiation have more or less energy than photons of visible light?
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Domanda del libro di testo
A popular kitchen appliance produces electromagnetic radiation with a frequency of 2450 MHz. With reference to Figure 6.4, answer the following: (b) Would the radiation produced by the appliance be visible to the human eye?
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