Estimat the main sequence lifetime of a star

Assignment Help Physics
Reference no: EM13271990

The larger the mass of a star, the shorter its Main Sequence lifetime becomes.

a) Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar.

b) It is believed that such a star lived longer when the Universe was still very young. Can you think of a reason why?

Reference no: EM13271990

Questions Cloud

Selections determine the audience and fill in the audience s : The audience would be the individuals we would want to hear the presentation. Some examples are just doctors, all health care professionals, nurses, patients, the elderly, or administrative staff.
How much energy is delivered to the circuit element : The voltage and current at the terminals of the circuit element are zero for t
What is the wavelength in vacuum of these x-rays : In a dentist's office, an X-ray of a tooth is taken using X-rays that have a frequency of 8.07 multiply.gif 1018 Hz
Find the length-the width and the input impedance : A microstrip antenna system operating at 915MHz must be designed using Rogers RO3010 substrate with the thickness of 0.635mm. The microstrip antenna should be connected to a microstrip feeding line of Zf=50O through a quarter-wavelength
Estimat the main sequence lifetime of a star : The larger the mass of a star, the shorter its Main Sequence lifetime becomes. Estimat the Main Sequence lifetime of a star with a mass of 6 Msolar
Find the expression for current entering the upper terminal : a current entering the upper terminal of an ideal basic circuit is i= 20cos 5000t A. Assume the charge at the upper terminal is zero at the instant the current is passing through it maximum value. Find the expression for q(t).
Which point does the proton have a higher potential energy : An electron moving parallel to the x axis has an initial speed of 3.70 x 106 m/s at the origin. Its speed is reduced to 1.40 x 105 m/s at the point x = 2.00 cm. Which point does the proton have a higher potential energy
What is the meaning of lives in general : How do you respond and what do you think is the meaning of your life? What gives it meaning? What is the meaning of lives in general?
Determine what is the back emf of an ac series circuit : If I have an AC series circuit with a voltage source of 3 Vrms, a frequency of 5 kHz, a 100 mH coil, and a 1 kohm resistor, how do I determine what the back emf is

Reviews

Write a Review

Physics Questions & Answers

  The center of a contiguous neighbouring molecule

The dipole moment of a water molecule in liquid water is 6.2×10-30 C•m, and the effective diameter of the water molecule is 2.8×10-10 m. In an earlier homework problem the effective dipole charge separation for water was calculated as 1.9×10-11 m.

  What is a quantum well

What is a quantum well: give an example of structure, growth method to make quantum wells and quantum states i.e. outline quantization using diagrams

  Determine the highest speed attained by rocket

A krypton laser produces a cylindrical red laser beam 2.0 in diam with 2.0 of power. What is the light intensity on a wall 2.5 away from laser.

  Calculate how much energy each capacitor can store

A circuit with 2 capacitors, C1 = 22.0 ?F and C2 = 16.0 ?F, are hooked up in parallel to each other, Calculate how much energy each capacitor can store

  How far up was the skiff does the arrow strike the apple

An apple is dropped from a 25m cliff. At the similar time, a person at the bottom of the cliff fries an arrow up towards the apple. The arrow sticks the apple 0.450 seconds later.

  How much time does the object take to reach the ground

How much time does the object take to reach the ground.

  What are the x and y components of each vector

A computer is reading data from a rotating CD-ROM. At a point that is 0.030m from the center of the disk, centripetal acceleration is 120m/s2. What is the centripetal acceleration at a point that is 0.05 m from the center of disc.

  Explain how far east of the tee does the ball hit fairway

The initial angle of the ball’s motion off the tee is 29.0° above the horizontal. If the tee level is 17.0 m above the level of the fairway, explain how far east of the tee does the ball hit the fairway?

  What is the horizontal distance from the press box

The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.

  Determine the simple harmonic motion of the spring

Determine the simple harmonic motion of the spring what ac velocity is ball moving

  What is the average force exerted on person

Some people think that they can stop themselves rushing forward by putting their hands on the dashboard. Find out the mass of the object that has a weight equal to force you just calculated.

  Describe the shape of the distribution of sample means

explain the shape of the distribution of sample means.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd