Galaxy B moves away from galaxy A at 0.501 times the speed of light. Galaxy C moves away from galaxy B in the same direction at 0.729 times the speed of light. How fast does galaxy C recede from galaxy A? Express your answer as a fraction of the speed of light. Galaxy C recedes from Galaxy A at C

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Q: If an electron is subjected to a force of 10-25 N in an X-ray machine, then find out the time taken…

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Q: A total resistance of 3.09 Q is to be produced by connecting an unknown resistance to a 12.22 Q…

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Q: 2. A long-straight wire carries a current of 1₁ = 8.0 A and a circular loop of wire lies immediately…

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Q: A square flat coil that has N turns, encloses an area A, and carries a current i has its central…

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Q: Impulse is defined as: (K:1) Select one: O a. a change in momentum O b. total momentum O c. total…

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Q: A torque of 35.3 N · m is applied to an initially motionless wheel which rotates around a fixed…

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Q: a on 3) A force of 300 N is applied across. 20kg box. The frictional force acting on the box is 200…

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Q: What factor indicates if an image is virtual or real?

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Q: 12. Give two examples of electrical devices that are based on transistors.

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Q: Determine the additional mass required for stable equilibrium. Meter stick: Xcm = 50.0 cm, m = 150.0…

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Q: ype. Introduction on Electrostatics and its theorie

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Q: Sketch a PV diagram of the following process: 2.01 of ideal gas at atmospheric pressure are cooled…

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Q: Two point charges, Q1Q1Q_1 = -7.0 μCμC and Q2Q2Q_2 = 1.7 μCμC are located between two oppositely…

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Q: Multiple Choices: Choose the BEST answer for each item. 1. Suppose there are a very long-straight…

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Q: 4) # 8kg object speeds up from 20m/fee to som/sec in 6 secords. a) what is the acceleration b) what…

A: 4) mass of object (m) = 8 kg initial speed (u) = 20 msfinal speed (v) = 50 mstime (t) = 6 seconds

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.