FREE Trial
Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Astronomers have studied galaxy UGC 128 for many years. They have measured its brightness and calculated that the mass of stars within a radius of

image text in transcribed
Astronomers have studied galaxy UGC 128 for many years. They have measured its brightness and calculated that the mass of stars within a radius of 1.30 * 1021 m is 3.34 x 10"0 kg. Stars orbiting at this radius have been measured travelling at a speed of 1.30 * 105 m/s. What percentage of the mass within this radius is dark matter

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Tensors, Relativity, And Cosmology

Tensors, Relativity, And Cosmology

Authors: Mirjana Dalarsson, Nils Dalarsson

2nd Edition

978-0128033975, 0128033975

More Books

Students also viewed these Physics questions

Question

★★★★★
An importer brings plain sports shirts into the U.S. because the import duty is lower than it is for shirts with adornments. In New Jersey, the importer sews on a figure of a fox. Could the importer...

Answered: 1 week ago

Question

★★★★★
=+32.4. Show that the Radon-Nikodym theorem fails if u is not o-finite, even if v is finite. Hint: Let F consist of the countable and the cocountable sets in an

Answered: 1 week ago

Question

★★★★★
=+b) How would you re-design this study? What nonparametric method would be appropriate then? New Activities Control 1 2 3 4 5 6 7 8 0 0 3 1 3 0 5 7 6 7 2 5 2 8 7 2 5 22238 4 3 3 2 1 1 3 3 2 3 4 7 6...

Answered: 1 week ago

Question

★★★★★
Identify each of the following accounts of Advanced Services Co. as asset, liability, owners equity, revenue, or expense, and state in each case whether the normal balance is a debit or a credit. a....

Answered: 1 week ago

Question

★★★★★
Brief Exercise 9-10 Waterway Inc. had beginning inventory of $11,600 at cost and $21,800 at retail. Net purchases were $125,641 at cost and $167,100 at retail. Net markups were $10,000, net markdowns...

Answered: 1 week ago

Question

★★★★★
One year ago, K J Industries stock sold for $ 5 2 a share. Over the past year, the stock has returned 1 6 . 0 percent with half of that return coming from dividend income. What is the current price...

Answered: 1 week ago

Question

★★★★★
A wire bent into a circular arc of radius \(R\) subtending an angle \(\phi\) carries a current of magnitude \(I\) (Figure 28.35). Use the Biot-Savart law to derive an expression for the magnitude of...

Answered: 1 week ago

Question

★★★★★
As of May 31, 2011, the bank statement showed an ending balance of \(\$ 17,250\). The unadjusted Cash account balance was \(\$ 16,450\). The following information is available: 1. Deposit in transit,...

Answered: 1 week ago

Question

★★★★★
Consider an economy that is populated by many identical riskneutral banks so that we can pick up an arbitrary representative bank and investigate its behavior. The bank makes loans at time 0, and the...

Answered: 1 week ago

Question

★★★★★
Describe the effect of a series or shunt input connection on the value of input resistance.

Answered: 1 week ago

Question

★★★★★
What is meant by the term matched transistors? What parameters in BJTs and MOSFETs are identical in matched devices?

Answered: 1 week ago

Question

★★★★★
Answer the following questions for each individual objective: Is this objective linked to the organizations mission or vision statement? Is this objective responsive to the...

Answered: 1 week ago

Question

★★★★★
Write at least one awareness objective for each key public, such as To have an effect on awareness; specifically . . .

Answered: 1 week ago

Question

★★★★★
What is your current position?

Answered: 1 week ago

Previous Question Next Question