A star has a mass of 1.5 x 10^30 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 2.2 x 10 ^ 4 light years( 1 lightyear = 9.5 x 10 ^15 m ) , and the angular speed of the star is 2.2 x 10 ^ -15 rad/s. a) Determine the tangential speed of the star. b) What is the magnitude of the net force that acts on the star to keep moving around the center of the galaxy?

A star has a mass of 1.5 x 10^30 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 2.2 x 10 ^ 4 light years( 1 lightyear = 9.5 x 10 ^15 m ) , and the angular speed of the star is 2.2 x 10 ^ -15 rad/s. a) Determine the tangential speed of the star. b) What is the magnitude of the net force that acts on the star to keep moving around the center of the galaxy?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom

Section: Chapter Questions

Problem 14P: Two planets X and Y travel counterclockwise in circular orbits about a star as shown in Figure...

See similar textbooks

Similar questions

Two double stars, one having mass 1.0 Msun and the other 3.0 Msun, rotate about their common center of mass. Their separation is 6 light years. What is their period of revolution?
Two stars of masses M and m, separated by a distance d, revolve in circular orbits about their center of mass (Fig. P11.50). Show that each star has a period given by T2=42d3G(M+m) Proceed as follows: Apply Newtons second law to each star. Note that the center-of-mass condition requires that Mr2 = mr1, where r1 + r2 = d.
A star has a mass of 1.23 x 1030 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 1.0 x 104light-years (1 light-year = 9.5 x 1015 m), and the angular speed of the star is 1.7 x 10-15 rad/s. (a) Determine the tangential speed of the star. (b) What is the magnitude of the net force that acts on the star to keep it moving around the center of the galaxy?
A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 2.9 x 10^20 m, and the angular speed of the star is 9.7 x 10^-15 rad/s. How long (in years) does it take for the star to make one revolution around the center? Note: the tolerance is in the 2nd significanct digit and indicate the unit
A uniform, spherical cloud of interstellar gas has mass 1.8×1030 kg and radius 1.2×1013 m, and is rotating with period 1.5×106 years. If the cloud collapses to form a star 7.4×108 m in radius, what will be the star's rotation period?
A pulsar may form when a star of medium mass dies. On July 4, 1054 CE, Chinese astronomers witnessed the death of a star that led to the formation of the pulsar in the Crab Nebula. Contemporary astronomers have measured the angular speed of the nebula's pulsar as ? = 1.89 ✕ 102 rad/s and have found that the pulsar is slowing down such that ? = 2.39 ✕ 10−9 rad/s2. (a) Determine the period of the pulsar's rotation. s(b) Determine the number of seconds by which this period increases each second (dT/dt).
A star rotates in a circular orbit about the center of its galaxy. The radius of the orbit is 1.3 x 1020 m, and the angular speed of the star is 5.6 x 10-15 rad/s. How long (in years) does it take for the star to make one revolution around the center?
Three uniform spheres of masses m1 = 2.00 kg, m2 = 4.00 kg, and m3 = 6.00 kg are placed at the corners of a right triangle as shown in Figure P13.6. Calculate the resultant gravitational force on the object of mass m2 , assuming the spheres are isolated from the rest of the Universe.
A rotating star collapses under the influence of gravitational forces to form a pulsar. The radius of the pulsar is 5.00 × 10−4 times the radius of the star before collapse. There is no change in mass. In both cases, the mass of the star is uniformly distributed in a spherical shape. If the period of the star’s rotation before collapse is 4.00 × 104 s, what is its period after collapse?
Universal Gravitational Constant, G=6,6742867E-11 m3 kg / s2(Note that the exponent is negative)Radius of Earth, RE: 6,3781366E+06 mMass of Earth, ME: 5,9721426E+24 kg Two celestial bodies whose masses are m1 and m2 are revolving around their common center of mass and the distance between them is L. Assuming that they are both point masses, Find the angular speed, tangential speeds of the masses m1 and m2, and period of the motion. m1=7,27210x10^12kg m2=3,85280x10^11kg L=6,16500x10^8m
During a supernova, the iron core of a supermassive star collapses into a neutron star. Let the mass of the collapsing core be (3×10^30kg), the initial radius is (6×10^6m), the final radius is (1×10^4m), and the initial rotation rate to be (1 rotation every 6 hours). [The moment of inertia of a sphere is 2/5M r^2. What is the final rotation rate of the neutron star?
Two binary stars, masses 1020 kg and 2×103 kg respectively, rotate about their common centre of mass with an angular velocity @. Assuming that the only force on a star is the mutual gravitational force between them, calculate w. Assuming the distance between the stars is 106 km