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Glencoe Physics: Principles and Problems ©2005 (Homework)

James Finch

Physics - High School, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 7/11

Due: Wednesday, August 18, 2010 19:00 EDT

About this Assignment

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Question
Points
1 2 3 4 5
2 0/1 1 4 0/3
Total
7/11

Description

Here are some textbook questions from Glencoe Physics: Principles and Problems ©2005 published by Glencoe/McGraw-Hill. Click here for a list of all of the questions coded in WebAssign.


Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.



1. 2/2 points All Submissions Notes Question: GPhys05 1.054.AC.
Question part
Points
Submissions
1 2
1 1
1/50 6/50
Total
2/2
 
Two students measure the speed of light. One obtains (3.001 0.001) 108 m/s; the other obtains (2.999 0.006) 108 m/s.
(a) Which is more precise?
    

Your answer is correct.


(b) Which is more accurate?
    

Your answer is correct.



2. 0/1 points All Submissions Notes Question: GPhys05 1.069.P.
Question part
Points
Submissions
1
0/1
12/50
Total
0/1
 
Rank the following mass measurements from largest to smallest (use only the symbols > or =, for example b>a=c>d). (a) 10.8 mg, (b) 1020 µg, (c) 0.000 005 kg, (d) 0.25 mg.
Answer is not case sensitive.
Your answer is incorrect.

3. 1/1 points All Submissions Notes Question: GPhys05 2.037.RC.
Question part
Points
Submissions
1
1
2/50
Total
1/1
 
The quantities that describe location or its change are position, distance, and displacement. Which are vectors?

Your answer is correct.




4. 4/4 points All Submissions Notes Question: GPhys05 3.082.MP.
Question part
Points
Submissions
1 2 3 4
1 1 1 1
1/50 1/50 2/50 2/50
Total
4/4
 
Refer to Figure 3-19 to find the acceleration of the moving object at each of the following times.


Figure 3-19

(a) during the first 5.0 s of travel
Enter a number.
Your answer is correct. m/s2
(b) between 5.0 s and 10.0 s
Enter an exact number.
Your answer is correct. m/s2
(c) between 10.0 s and 15.0 s
Enter a number.
Your answer is correct. m/s2
(d) between 20.0 s and 25.0 s
Enter a number.
Your answer is correct. m/s2


5. –/3 points Notes Question: GPhys05 8.MR.089.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
0/50 0/50 0/50
Total
0/3
 
A wooden door of mass m, and length l, is held horizontally by Dan and Ajit. Dan suddenly drops his end.
(a) What is the angular acceleration of the door just after Dan lets go? (Use m for m, g for the acceleration due to gravity and l for l as necessary.)
Enter a mathematical expression.
Click here to preview your answer.
(b) Is the acceleration contant?
    


Explain

Click here for help with symbolic formatting.
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