An object must be at least 0.08 solar masses to be a star. Using a ratio, compare the lifetime of such a star to that of the Sun

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Q: nitial Position of character = (10,7) Position after movement = (9, 10) What is the distance…

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A: Given data:  Force constant (k) = 99 N/m Mass (m) = 1 kg Required: The stretch in the spring (x)

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Q: The center of mass of the arm shown in the figure is at point A. Find the magnitudes (in N) of the…

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Q: Under Oregon Law, all passengers in a moving vehicle must wear a seatbelt. Using Newton's First Law,…

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Q: A 4.5-cm-diameter, 0.50-mm-thick spherical plastic shell holds carbon dioxide at 2.0 atm pressure…

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Q: At what frequency will the inductive reactance of a 0.0211 H inductor be equal to the capacitive…

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Q: A man pulls a sled a distance of 231 m. The rope attached to the sled makes an angle of 30.0° with…

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Q: In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the…

A: initial height (h) = 1.28 m horizontal distance (d) = 1.20 m

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Q: Problem 2: Kinematics and vectors. An object is moving on the xy plane with velocities given by: m x…

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Q: A proton moving with a velocity of 2.0 x 100 m/s, eastward enters a uniform magnetic field of 0.50 T…

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Q: Question 1.) A block with mass of 10.00 kg is on a slope of angle θ 30.0° to the horizonal (see…

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Q: Bob who has a mass of 75kg can throw a 520 g rock with a speed of 34 m/s. The distance through which…

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Q: net force

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Q: Oppositely charged parallel plates are separated by 6.30 mm. A potential difference of 600 V exists…

A: Solution:-

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Q: Law of Reflection

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Q: See the attached figure for this problem.  There is a charge is 9.61 x 10^-6 C, the magnetic field…

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Q: Problem 4: A particular spring does not obey Hooke's law (F(x) = -k x), but rather is described by…

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Q: Calculate the first two radii of the permitted orbits of hydrogen atoms. What are the values of the…

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Q: A piston oscillates vertically at frequency f. Find the maximum oscillation amplitude such that a…

A: Given ,               - Frequency of oscillation  = 5.7 Hz

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.