What is the main sequence lifetime of a star with initial mass 3.67 times the Sun's mass?

Q: A person's experience in a daily life that's similar to how defibrillator works, can you give an…

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Q: An arrow is shot upward from the top of a 740 ft building with an initial velocity of 68 ft/s. 1.…

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Q: Gavi A circuit has a resistance of 4.7 ohms and draws a current of 9.2 A what is the potential…

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Q: A 24.0 V battery is attached to a 0.180 m long solenoid with 2600 turns. It creates a 0.0705 I…

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Q: (16) Please don't write on a paper. I can't understand handwritten. Light from fluorescent bulb…

A: Given data: The distance between the slits is d=0.0076 mm. The angle of bright fringe is θ=33.69°.…

Q: A 20 cm tall object is placed 40 cm in front of a diverging lens with a focal length of 65 cm. (a)…

A: Given:height of object ho is 20 cm or 0.2 mDistance of object from diverging lens is 40 cm or 0.4…

Q: 2. Two parallel wires (X and Y) are 15 cm apart and carry currents of 10A and 6A respectively. What…

A: Separation, d = 15 cm = 15×10-2 m = 0.15 m Current, i1 = 10 A Current, i2 = 6 A Length of wire Y, L…

Q: The speed of light in an unknown medium is measured to be 4.76 x 10^8  m/s. (a) What is the index or…

A: The Refractive index of a medium = Speed of light in vacuum / Speed of light in the medium .…

Q: If R is the universal gas constant, what is the specific heat of a mole of molecular nitrogen ideal…

A: Here R is the universal gas constant

Q: What load or resistance on a circuit would pull a current of 7.4 A when connected to a voltage…

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Q: On a day when the speed of sound is 345 m/s, the fundamental frequency of a particular stopped organ…

A: Given data: The fundament frequency of sound is f=220 Hz. The speed of sound is v=345 m/s.

Q: 4. As an ideal gas undergoes an isothermal (constant temperature) temperature T, its volume changes…

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Q: A 100 µC charge is placed at the origin. A 200 µC charge is placed 2m above the origin and a -300 µC…

A: Below diagram shows the electric force acting at the Origin.

Q: Which of the following equation is TRUE for a properly connected series circuit that contains a 10…

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Q: Stephen Curry passed the ball to Kevin Durant. Durant let the ball bounce before getting the ball…

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Q: As shown in the figure, a layer of water (n=1.333) covers a slab made of glass (n=1.523) which is on…

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Q: An iron rod becomes magnetic when the magnetic domains point in the same direction its electrons…

A: Correct answer - (a) the magnetic domains point in the same direction

Q: If the values for frictional force are given: 8.83, 9.81, 11.77, 12.76 and 14.72 and for…

A: normal force frictional force 16.68 8.83 19.62 9.81 22.56 11.77 25.51 12.76 28.45…

Q: If there is an inward force acting upon an earth-orbiting satellite, then why doesn't the satellite…

A: At every point along its trajectory, a satellite is falling toward the earth. Yet because the earth…

Q: A horizontal water pipe has varying diameters. At a certain point, the waters speed is 3.00m/s and…

A: Write the given values with the suitable variables. v1=3 m/sP1=2×104 N/m2A2=A12 Here, v1, P1, A2,…

Q: The amount of charge that passes through a certain light bulb in 4.00 s is 5.75 C. Determine the…

A: Given value--- Charge = 5.75 C. time = 4 sec. We have to find--- Current?

Q: Three resistors of 50 N, 100 N and an unknown resistance R are connected in parallel and the…

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Q: What will be the total time to cover 3600 m at 2 meter per seconds?

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Q: What is the total current in the circuit? [ 1.0 mA = 1.0 x 10^-3 A] R2 = 2000 n R, = 2500 0 %3D R3 =…

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Q: If R is the universal gas constant, what is the specific heat of a mole of ozone at constant VOLUME?…

A: Here R is the universal has constant.

Q: In an L-R-C series circuit, suppose R = 300 ohms, L = 60 mH, C = 0.50 uF, V = 50 V, and w = 10,000…

A: Please note : As per answering guidelines I can answer the first three parts of a multisub-part…

Q: NEGATIVE charge moving with a constant velocity of magnitude v enters a region of a uniform magnetic…

A: Right Hand Rule :  Definition :-  According to this rule,  if when a charged particle is moving in…

Q: Using Gauss’s Law and the relation between electric potential and electric field, show that the…

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Q: A force of 20 lb is required to hold a spring stretched 2 in. beyond its natural length. How much…

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Q: The ratio of stress to strain (o-4 / ɛ ) in the linear elastic region is . . called Young's

A: Y = streas/strain

Q: r beam is 1400 W/m?. What is the amplitude of the magnetic field in the beam (in uT)? (A) 8.44 (B)…

A: Given

Q: An electromagnetic wave propagating in vacuum has the following magnetic field vector: B(z, t) =…

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Q: .). Explain how a man can comfortably lay on a bed of nails? ii. Which of the laws of motion…

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Q: One end of a horizontal rope is attached to a prong of an electrically driven tuning fork that…

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Q: Calculate the electrical energy consumed in Joules if a toaster of 90 W is used 340 seconds ?

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Q: Write a computer program to model the motion of a spacecraft of mass 150000 kg that is launched from…

A: We have to write a computer program to model the motion of a spacecraft of mass 15000kg Initial…

Q: In New York City, a ball festival was held. In the contest, a ball with a mass of 5 kg was fired at…

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Q: 1. Monochromatic light from a laser passes through two slits separated by 0.00500mm. The third…

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Q: TYPE OF LENSE, 1, 2nd Container: COMBINED:

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Q: Given data : Displacement = 7 m Force = 0.18 N Find the work done

A: Given data :                         Force     =     F                  Displacement    =    d…

Q: A combination of three resistors R1, R2 and R3 in series is connected across a voltage source Vr.…

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Q: 6 μF 6 μF 6 μF 6 μF 4 μF 4 μF 6 μF 6 μF 6 μF HE

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Q: R R3 R5 3 kn 2 kn 1 kn R28 kn R27 kn Rs6 kn 111 V Rtot = I tot =. AV1= I2=. AV2=. I3=. AV3=. 14=.…

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Q: 3-Viscosity in liquids arises due to the friction forces between the contact fluid layers and at…

A: Viscosity is resistance offered to fluid flow .It is  measure of the resistance of a fluid towards…

Q: 4. The angular frequency of an electromagnetic wave traveling in vacuum is 3.00 x 10° rad/s. W the…

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Q: When switch S in Fig. E25.33  is open, the voltmeter V of the battery  reads 3.08 V. When the switch…

A: We have to find the resistance (R)

Q: 13. Initial velocity = 10 ms-', final velocity = 2ms-', acceleration = -4ms-2. Find the distance. a)…

A: Given: The intnial velocity of the object is 10 m/s. The final velocity of the object is 2 m/s. The…

Q: A coil of wire is above a magnet whose north pole is pointing up. For current, counter- clockwise…

A: Answer:- (c)  If we moved the loop from well above the magnet to well below the magnet at a constant…

Q: 8. Distance = 28 m, acceleration = 1 m s-2, time taken = 4 s. Find the initial velocity. a) 3m/s b)…

A: Given: The distance traveed is 28 m. The acceleration of the object is 1 m/s2. The time interval is…

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.