A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.600 s. (Enter your answers to at least four decimal places. Use the following relationship between Kelvin and Celsius: T(K) = T(°C) + 273.15.) (a) How far away (in m) is the explosion if air temperature is 24.0°C and if you neglect the time taken for light 207.3289 x m (b) Calculate the distance to the explosion (in m) taking the speed of light into account. Note that this distance 207.3292 m reach the physicist? negligibly greater.

Q: A person standing on an open ground hears the sound of a jet aeroplane, coming from north at an…

A:

Q: Green light has a frequency of about 5.3Hz×1014Hz5.3Hz×1014Hz.   1. Using the relationship…

A: The relationship between speed, wavelength, and frequency of light is given by, c=λf......(1)where,…

Q: How many nanoseconds does it take light to travel a distance of 6.50 km in a vacuum?

A: Distance travelled,  Speed of light,    The time taken can be calculated from the expression

Q: How far away is the Moon if a reflected beam of light takes 2.56 seconds to travel from Earth to the…

A: Given Reflected beam of light takes a time (t) = 2.56 seconds

Q: 55. A cell tower is a site where antennas, transmitters, and receivers are placed to create a…

A: Given: Point A is (4,6). The range of the tower is 1.5 mi.

Q: Amount of solar energy received on the earth’s surface per unit area per unit time is defined a…

A: To find -Dimension of solar constant

Q: AM radio signals are broadcast at frequencies between 550 kHz (kilohertz) and 1600 kHz and travel at…

A: Solution: Given that AM Waves v =3 × 108 m/s                               f1= 550 kHz=550×103 Hz…

Q: If the distance from an antenna on Earth to a geosynchronous communications satellite is 26000…

A: Given data: Distance (d) = 26000 miles 1 mile = 1.61 km = 1.61 × 103 m Speed radio wave (v) = 3.0 ×…

Q: Amount of solar energy received on the earth’s surface per unit area per unit time is defined a…

A: To find -Dimension of solar constant

Q: A slab of glass 0.2mthick absorbs 50% of the light passing through it. How thick must a slab of…

A: Given data: Thickness of the material, x=0.5 m

Q: The average intensity of sunlight on Earth’s surface is about 1000 ? ?2 ⁄  a. Calculate the solar…

A:

Q: Approximately how long would it take a telephone signal to travel 2970 mi from coast to coast across…

A:

Q: If you put a chocolate bar in your microwave (without allowing it to rotate) spots of molten…

A: Given data : Half of the wavelength, λ/2 = 5cm = 0.05m Speed of light, c = 2.998×108m/s

Q: What would be the refractive index of a compound at 20 C, if its refractive index was at 22.8 C and…

A: Refractive index values are usually determined at standard temperature. . At higher temperature ,…

Q: The surface temperature of the naked-eye star Capella (in constellation Auriga) is approximately…

A: Given: The temperature of the star is T =47000 C (a) According to Wien’s displacement law: λT…

Q: Consider a radio communication signal aimed at Mars from Earth.  The distance between Earth and Mars…

A: The radio wave is an electromagnetic wave so that its speed is same as the speed of light. The…

Q: What is the wavelength of visible light that has a frequency of 2.4×10^14 Hz? Enter the result in…

A: Given data:  The visible light  Frequency (f) = 2.4×1014 Hz Required:  The wavelength (λ) in…

Q: Scientists use laser range finding to measure the distance to the moonwith great accuracy. A very…

A: As per guidelines, the first three sub-parts have been answered.

Q: Assume the following waves are propagating in air. Calculate the wavelength X2 for visible light of…

A: a) frequency of gamma ray ϑ1 = 7.3×1021 HzSpeed of light wave in air is c = 3×108 m/slet λ1 denotes…

Q: The fraction of nonreflected radiation that is transmitted through a 5-mm thickness of a transparent…

A: In this problem, we are asked to calculate the fraction of non-reflected light transmitted through a…

Q: X-rays used by dentists have a wavelength of roughly 3,0 x 10^-11 m. What is the frequency of these…

A:

Q: What is the wavelength (in m) of a radio signal with a frequency of 98.3 MHz? Enter the numerical…

A: Here we have to use the relationship between frequency,speed and wavelength to solve this problem

Q: What is the frequency of light having a wavelength of 6.50 x 10-6 cm? (Use c = 3.00 x 108 m/s)

A:

Q: 18. A charged particle oscillates with a frequency of 300 MHz. The wavelength of electromagnetic…

A: Given   frequency of oscillation charge particle is 300MHz    so F=300X10^6 Hz we need to find the…

Q: 101.0 MHzMHz (typical frequency for FM radio broadcasting). 102.4 MHzMHz (typical frequency for FM…

A: This question can easily be solved by applying the basic concept of significant figure .

Q: If the wavelength of light is halved, by what fraction does the amount of the light scattered by…

A: Write the expression for the intensity of the light by Rayleigh’s law of scattering. I∝1λ4

Q: what is the frequency of a light of wavelength 7.4 x 10^-7 m?

A: Given:wavelength=7.4x10-7 mFind the frequency of a light.Now,Wavelength is related to frequency…

Q: light wave with a wavelength of 480.43 nm has travelled a distance of 4.7 ?μm.  How many wavelengths…

A:

Q: What is the speed of light ( km/s) in a medium with refractive index n = 1.3? Assume the speed of…

A:

Q: A light has a wavelength of 580nm. What is the frequency of the wave?

A:

Q: How far does light travel in one year? [This distance is known as a light-year (ly) and is used in…

A: The speed with which Light travels=3×108 m/s Time=1 year   = 1 year= 365 days= 365×24 hrs= 365×24×60…

Q: A physics instructor grew up with a 3 second rule for lightning bolts, to allow estimation of the…

A: The speed of light is 3×108 m/s. Thus, when we see a lightning at a distance, its almost…

Q: An airplane’s altimeter measures its altitude to increase at a speed of vvertical = 14 m/s. An…

A:

Q: a thin film of  MgF2 ​(n​ = 1,38) with thickness of 8,25×10−5 cm​ was put on glass ​(n​ =1,55​). If…

A: Given; The refractive index of thin film of MgF2, n=1.38 Refractive index of glass, ng=1.55…

Q: Angle Give your answer to at least three significance digits. deg f) What is the net force on q1? x…

A: Problem from Electrostatics (Electrodynamics) Please have a good And thus, y component is zero.

Q: A special black material absorbs all light incident upon it. An intense laser beam shines straight…

A: Given data, Area of the object = 1 m2 Mass of the object = 1 kg Acceleration of the object = 2g = 20…

Q: 3. The wavelength of green light from a traffic signal is centered at 5.20 x 105 cm. Calculate the…

A:

Q: a) Approximately how long would it take a telephone signal to travel 2810 mi from coast to coast…

A: Conversion 2810 mi=2810 mi1609.34 mmi=4522257 m (a) Time taken for a telephone signal to travel 2810…

Debye Theory of Solids

In solid-state physics, debye theory is used to estimate the phonons contributing to the specific heat capacity in a solid. It explains that the specific heat is a consequence of the vibrations of the atomic lattice of the solid, which is in contrast to the Einstein model. In the Einstein model, solids are treated as independent, non-interacting quantum harmonic oscillators. This model clearly explains the low-temperature dependence of the heat capacity, which is proportional to T3. This is known as Debye T3 law.