Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. The density of a neutron star is roughly 1014 times as great as that of ordinary solid matter. Suppose we represent the star as a uniform, solid, rigid sphere, both before and after the collapse. The star's initial radius was 9.0x105 km (comparable to our sun); its final radius is 18 km. Part A If the original star rotated once in 29 days, find the angular speed of the neutron star. Express your answer in radians per second. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Anyone can be a ballerina. ? rad/s Submit Request Answer Provide Feedback

Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. The density of a neutron star is roughly 1014 times as great as that of ordinary solid matter. Suppose we represent the star as a uniform, solid, rigid sphere, both before and after the collapse. The star's initial radius was 9.0x105 km (comparable to our sun); its final radius is 18 km. Part A If the original star rotated once in 29 days, find the angular speed of the neutron star. Express your answer in radians per second. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Anyone can be a ballerina. ? rad/s Submit Request Answer Provide Feedback

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook is shown in the table below. Suppose a later and more reliable measurement gives 0.460 s for the period of the same star. Decide which of the earlier measurements was the most accurate, and which was the most precise. team A B C D what was written in the notebook "0.51s 0.05s" "between 0.480s and 0.490s" "0.360s + 7.0%" "0.560s" most accurate measurement O O O O most precise measurement O O O O X Ś
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Part a) When conducting a doppler shift calculation for sound waves, there are three velocities that are relevant. What are they measured relative to? (Check your formula sheet!) v is the velocity of the sound wave relative to the: (No answer given) Us is the velocity of the source of the sound wave relative to the (No answer given) = Vo is the velocity of the observer of the sound wave, relative to the ✓(No answer given) Air Ground Source Observer Part b) Part b) Persons A and B are standing some distance apart. Person A is stationary, while person B is on a cart moving towards person A (which is to the left) at a speed of UB== 17.5ms ¹. At the same time, there is a wind blowing the air toward the left with a speed of = 14.71ms ¹ A UB,air = Part 3) SSS₁.-= What is the velocity of person A, relative to the air/wind? Assume positive is to the left: VA,air = -1 to the left. What is the velocity of person B, relative to the air/wind? Assume positive is to the left: ms =% ms to the left. B…
C On a separate sheet of paper, solve the following problems. 1. A meteor has a length of 20 meters. If the meteor is moving at 35% the speed of light, is its contracted length? what 15 ba De 1800 10310815033-0110e3033 (sa pi
Barnard’s star is an orange star in the constellation Ophiuchus. It has the largest known proper motion (10.3577"/yr) and the fourth-largest parallax angle (0.54901"). In the spectrum of this star, the H alpha line is observed to have a wavelength of 656.034 nm when measured from the ground. a. Determine the radial velocity of Barnard’s star. b. Determine the transverse velocity of Barnard’s star. c. Calculate the speed of Barnard’s star through space.
v Correct Part C Which has a greater luminosity, a star with absolute magnitude -2 or a star with absolute magnitude 8 ? O A star with absolute magnitude 8. A star with absolute magnitude -2. Submit Previous Answers Correct Part D By how much? LM=-2 LM-8 000000001 Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Next > Provide Feedback P Pearson 8:58 PM (cp ツ 4/2/202 earson Education Inc. All rights reserved. | Terms of Use Privacy Policy Permissions Contact Us | 49°F Sunny
Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook is shown in the table below. Suppose a later and more reliable measurement gives 0.250 s for the period of the same star. Decide which of the earlier measurements was the most accurate, and which was the most precise. what was written most accurate most precise team in the notebook measurement measurement A "0.20s + 30.%" В "between 0.255s and 0.265s" "0.35s" D "0.300s + 0.025s"
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d. Again: Assume Particles are fired (continually, as in a machine gun) from Source to Receiver. But Now: Assume that the Receiver is Receding from Source at a speed of 80 m/s relative to the Air. Assume that the Source is stationary relative to the Air. i. Draw a diagram of the situation as you understand it, making sure to label all values and making absolutely sure to explicate the + direction. ii. As measured by the Source, what is the velocity of each of these Particles? iii. As measured by the Source, how far apart are each of these Particles? iv. As measured by the Receiver, what is the velocity of each of these Particles? v. As measured by the Receiver, how far apart are each of these Particles? vi. As measured by the Receiver, what is the firing frequency of these Particles?
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