Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 26, Problem 30E
Calculate the mass-to-light ratio for a globular cluster with a luminosity of 106LSunand 105 stars. (Assume that the average mass of a star in such a cluster is 1 MSun.)
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Uniform Circular motion.
1. Mini Lecture
2. Let the position of a particle be given by:
(t) = Rcos (wt)i + Rsin (wt)j
3. Calculate the expression for the velocity
vector and show that the velocity vector is
tangential to the circumference of the circle.
4. Calculate the expression for the acceleration
vector and show that the acceleration vector
points radially inward.
5. Calculate the magnitude of the velocity and
magnitude of the acceleration, and therefore
show that
v2
a =
R
4. A ball is thrown vertically up, its speed.
slowing under the influence of gravity.
Suppose (A) we film this motion and play
the tape backward (so the tape begins with
the ball at its highest point and ends with it
reaching the point from which it was
released), and (B) we observe the motion of
the ball from a frame of reference moving
up at the initial speed of the ball. The ball
has a downward acceleration g in:
a. A and B
b. Only A
c. Only B
d. Neither A nor B
2. Consider a 2.4 m long propeller that
operated at a constant 350 rpm. Find the
acceleration of a particle at the tip of the
propeller.
Chapter 26 Solutions
Astronomy
Ch. 26 - Describe the main distinguishing features of...Ch. 26 - Why did it take so long for the existence of other...Ch. 26 - Explain what the mass-to-light ratio is and why it...Ch. 26 - If we now realize dwarf ellipticals are the most...Ch. 26 - What are the two best ways to measure the distance...Ch. 26 - What are the two best ways to measure the distance...Ch. 26 - Why is Hubble’s law considered one of the most...Ch. 26 - What does it mean to say that the universe is...Ch. 26 - Was Hubble’s original estimate of the distance to...Ch. 26 - Does an elliptical galaxy rotate like a spiral...
Ch. 26 - Why does the disk of a spiral galaxy appear dark...Ch. 26 - What causes the largest mass-to-light ratio: gas...Ch. 26 - What is the most useful standard bulb method for...Ch. 26 - When comparing two isolated spiral galaxies that...Ch. 26 - If all distant galaxies are expanding away from...Ch. 26 - Is the Hubble constant actually constant?Ch. 26 - Where might the gas and dust (if any) in an...Ch. 26 - Why can we not determine distances to galaxies by...Ch. 26 - Which is redder-a spiral galaxy or an elliptical...Ch. 26 - Suppose the stars in an elliptical galaxy all...Ch. 26 - Starting with the determination of the size of...Ch. 26 - Suppose the Milky Way Galaxy were truly isolated...Ch. 26 - Suppose you were Hubble and Humason, working on...Ch. 26 - What does it mean if one elliptical galaxy has...Ch. 26 - Based on your analysis of galaxies in Table 26.1,...Ch. 26 - Can a higher mass-to-light ratio mean that there...Ch. 26 - According to Hubble’s law, what is the recessional...Ch. 26 - A cluster of galaxies is observed to have a...Ch. 26 - Suppose we could measure the distance to a galaxy...Ch. 26 - Calculate the mass-to-light ratio for a globular...Ch. 26 - Calculate the mass-to-light ratio for a luminous...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Why is living epithelial tissue limited to a certain thickness?
Human Anatomy & Physiology (2nd Edition)
In tomato plants, purple leaf color is controlled by a dominant allele A, and green leaf by a recessive allele ...
Genetic Analysis: An Integrated Approach (3rd Edition)
WHAT IF? You are studying nitrogen cycling on the Serengeti Plain in Africa. During your experiment, a herd of...
Campbell Biology (11th Edition)
Plants use the process of photosynthesis to convert the energy in sunlight to chemical energy in the form of su...
Campbell Essential Biology with Physiology (5th Edition)
Modified True/False 6. __________ Halophiles inhabit extremely saline habitats, such as the Great Salt Lake.
Microbiology with Diseases by Body System (5th Edition)
Choose the best answer to each of the following. Explain your reasoning. The solar nebula was 98% (a) rock and ...
Cosmic Perspective Fundamentals
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- 2. A football is kicked at an angle 37.0° above the horizontal with a velocity of 20.0 m/s, as Calculate (a) the maximum height, (b) the time of travel before the football hits the ground, and (c) how far away it hits the ground. Assume the ball leaves the foot at ground level, and ignore air resistance, wind, and rotation of the ball.arrow_forwardPlease don't use Chatgpt will upvote and give handwritten solutionarrow_forwardCam mechanisms are used in many machines. For example, cams open and close the valves in your car engine to admit gasoline vapor to each cylinder and to allow the escape of exhaust. The principle is illustrated in the figure below, showing a follower rod (also called a pushrod) of mass m resting on a wedge of mass M. The sliding wedge duplicates the function of a rotating eccentric disk on a camshaft in your car. Assume that there is no friction between the wedge and the base, between the pushrod and the wedge, or between the rod and the guide through which it slides. When the wedge is pushed to the left by the force F, the rod moves upward and does something such as opening a valve. By varying the shape of the wedge, the motion of the follower rod could be made quite complex, but assume that the wedge makes a constant angle of 0 = 15.0°. Suppose you want the wedge and the rod to start from rest and move with constant acceleration, with the rod moving upward 1.00 mm in 8.00 ms. Take m…arrow_forward
- A rectangular current loop (a = 15.0 cm, b = 34.0 cm) is located a distance d = 10.0 cm near a long, straight wire that carries a current (Iw) of 17.0 A (see the drawing). The current in the loop is IL = 21.0 A. Determine the magnitude of the net magnetic force that acts on the loop. Solve in N. a b IL Iwarrow_forwardTwo long, straight wires are separated by distance, d = 22.0 cm. The wires carry currents of I1 = 7.50 A and I2 = 5.50 A in opposite directions, as shown in the figure. Find the magnitude of the net magnetic field at point (B). Let r₁ = 12.0 cm, r2 = 7.00 cm, and r3 = 13.0 cm. Solve in T. 12 d A √3arrow_forwardI tried to solve this question, and I had an "expert" answer it and they got it wrong. I cannot answer this questionarrow_forward
- Eddie Hall is the current world record holder in the deadlift, a powerlifting maneuver in which a weighted barbell is lifted from the ground to waist height, then dropped. The figure below shows a side view of the initial and final positions of the deadlift. a 0 = 55.0° Fift h22.5 cm i hy = 88.0 cm b iarrow_forwardsolve for (_) Narrow_forwardTwo boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figure below, where m₁ = 11 kg and m₂ = 25 kg. A force of F = 80 N is applied to the 25-kg box. mq m1 Applies T Peaches i (a) Determine the acceleration of each box and the tension in the string. acceleration of m₁ acceleration of m₂ tension in the string m/s² m/s² N (b) Repeat the problem for the case where the coefficient of kinetic friction between each box and the surface is 0.10. acceleration of m₁ acceleration of m₂ tension in the string m/s² m/s2 Narrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax
Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
Stars and GalaxiesPhysicsISBN:9781305120785Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
Stars and Galaxies
Physics
ISBN:9781305120785
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning