Sun is 4 X 10^26 watts and Los Angeles 3 X 10^8 watts How many cities like Los Angeles could be powered if we use all the power of sun puts out?

Q: A black body radiator in the The shape of a sphere has a surface area of 1.1 m². If the temperature…

A: Given data:  Surface area (A) = 1.1 m2 Temperature (T) = 1015 K Black body radiator

Q: The energy of a photon is given by 11 eV. What is the energy of the photon in the unit of J? Answer…

A: Given :    Energy of photon, E = 11 eV

Q: for any wave, the speed equals the wavelength times the frequency. If a photon of visible light has…

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Q: if you know that the intensity of sunlight reaching the planet earth is 1.40kW/m^2, determine the…

A: a) Write the expression for the area and substitute the corresponding values. A=4πR2A=4π(1.5×1011…

Q: Answer the following questions: (i) Why is the thin ozone layer on top of the stratosphere crucial…

A: (i) The thin ozone layer on the top of the stratosphere is important for human survival. They…

Q: 3. Here is a problem that beautifully illustrates why we want this new approach. Problem: A mass of…

A: The given information is, mb=3 kgθ=60°μk=0.2si=0.5 m The free-body diagram of the system is as shown…

Q: It is necessary to use satellites for long distance TV transmission. Why?

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Q: The filament of a light bulb goes from a temperature of about 297 K up to about 2,700 K when it is…

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Q: Need help with concepts in the problem below! In this problem, we will consider the following…

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Q: 5. Identical twins Rick and Chris are painting a house. Rick is standing on the scaffolding 5 meters…

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Q: 2) Today's cars are about 25 % efficient, which means that only 25% of the energy is actually used…

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Q: The Sun has a temperature of approximately 5800 K. a) What is the peak wavelength of light emitted…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: A small radio transmitter broadcasts in a 33 mile radius. If you drive along a straight line from a…

A: Transmitter at origin    City to the north at (0,40)  City to the east at (45,0)    Slope is…

Q: what is the radiation spectrum? exemplify phenomena and/or applications in different regions of the…

A: The spectrum consists of radiation such as gamma rays, x-rays, ultraviolet, visible, infrared and…

Q: 1. a) A conventional photovoltaic cell delivers 4.0x10a W of electric energy when illuminated with…

A: Output power by cell = 4.0 × 10-3 W  Input power = 1.2 × 10-1 W

Q: Why do radar satellites typically use a sun-synchronous, dawn-dusk orbit? A. To optimize the…

A: Explanation:  Radar satellites typically use a sun-synchronous, dawn-dusk orbit to maintain a…

Q: The infrared radiation coming from the center of our galaxy has a wavelength of 2 µm. Using this…

A: The energy released by the core of a star is absorbed by its outer layers which then remits them.…

Q: If a 6,800 kg spacecraft were attached to the sail in problem 13, what would its acceleration be and…

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Q: Space-based telescopes are needed to observe electromagnetic energy that cannot reach the surface of…

A: Introduction: Some types of electromagnetic radiation easily pass through the atmosphere, while…

Q: collisions transfer energy

A: The year with the most auroras would be 2014, and the year with the least auroras would be 2020.

Q: Scientists plan to place detection devices outside Earth's atmosphere to detect radiations from a…

A: Special cameras, because high energy UV rays are emitted by objects having very high mass

Q: How big would a square solar sail need to be in order for sunlight to exert a 12 N force on it (use…

A: Given data: The force exerted by the sunlight is F = 12 N The intensity of the sunlight is I= 1100…

Q: In 2004, when Mercury passed between the Sun and Earth, sunlight was not appreciably bent as it…

A: Mercury ids the closest planet to the Sun in our solar system.

Q: Calculate the intensity of light along the light path from point a to point b to point c,  if the…

A: Given, The power of the light source: P=60 W ab=5 m bc=3 m (We assume that the light source is…

Q: Suppose YOUR body temperature averages 98.6 F. 1. How much radiant energy in Wm^-2 is emitted from…

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Q: Solar Impulse 2 is a Swiss long-range experimental solar-powered aircraft project. What are the key…

A: Solar Impulse is the name of the project's two operating aircraft, as well as a Swiss long-range…

Q: Suppose a blackbody at 425 K radiates just enough heat in 15.0 min to boil water for a cup of tea.…

A: According to Stefan's law for black body radiation Q/t = b A T4 Q = heat flow  b = Stefan constant A…

Q: Give a complete description of these three categories of energy relative to each other in terms of…

A: The electromagnetic spectrum is comprised of different types of electromagnetic radiation, which…

Q: In a not so far away solar system, the sun's intensity is 30 W/m2 for a planet located a distance R…

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Q: 3... A spacecraft is in a circular orbit around the moon at an altitude of 911 km. What is the…

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Q: You are an astronomer and are searching for planets in other stellar systems for which conditions on…

A: Given:A candidate star name = Tycho1601Size of Tycho1601 = size of sunSurface temperature of…

Q: Loki is standing on top of the Avenger's Tower. If the tower is 72 m tall and Loki has a mass of 55…

A: Given Data  Height of A's tower is h = 72 m  Mass of L is M = 55 Kg  Taking g = 9.8 m/s2  potential…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.