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©2011 John Sohl, Department of Physics, Weber State University, Ogden, UT 84408-2508 - page 7 / 7

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Hubble Redshift-Distance worksheet.

Score:

/10

Name:

class hr:

___

Due date is on the syllabus.

(Hand in only one copy per group.)

Date that you took your data: Absolute Magnitude = -22 (Don’t forget the minus!);

Name: Lab value of K line = 3933.67 ;

Lab value of H line = 3968.847 .

column: 1

2

3

4

5

6

7

8

9

10

11

App.

K

H line

D

D

v

v

v

Time

Time

Mag.

line

()

(pc)

(km)

(K line)

(H line)

(average)

(sec)

(years)

()

(km/s)

(km/s)

(km/s)

UMa2-2

16.67

4484

offscale

5.42 X 108

1.67 X 1022

41,971

N/A

41,971

3.99 X 1017

1.27 X 1010

Coma 3

12.45

4012

4048

7.76 X 107

2.40 X 1021

5,974

5,983

5,979

4.01 X 1017

1.27 X 1010

Object

Average value of the age of the universe in years =

Your value should be in the range of about 12 to 14 billion years. (Currently, the best actual value is 13.75 billion years.)

Is your value close (check one)?

Yes!!

No, but I’m too embarrassed to come see you.

No, I waited too long to come see you.

No, I’m too lazy to come see you.

No and I just don’t care.

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