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Holt Physics 2006 (Homework)

James Finch

Physics - High School, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score : 7 / 22

Due : Wednesday, September 1, 2010 19:00 EDT

About this Assignment

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Question
Points
1 2 3 4 5
1/4 0/2 0/2 6/9 0/5
Total
7/22 (31.8%)

Description

Here are some textbook questions from Holt Physics 2006 copyright by Serway and Faughn published by Holt, Rinehart and Winston. 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. 1/4 points All Submissions Notes Question: HoltPhys06 2.P.009.
Question part
Points
Submissions
1 2 3 4
1 0/1 0/1 0/1
3/50 4/50 4/50 4/50
Total
1/4
 
Two cars are traveling on a desert road, as shown below. After 5.0 s, they are side by side at the next telephone pole. The distance between the poles is 58.5 m.

(a) the displacement of car A after 5.0 s
Enter a number.
Your answer is correct. m
(b) the displacement of car B after 5.0 s
Enter a number.
Your answer is incorrect. m
(c) the average velocity of car A during 5.0 s
Enter a number.
Your answer is incorrect. m/s
(d) the average velocity of car B during 5.0 s
Enter a number.
Your answer is incorrect. m/s


2. –/2 points Notes Question: HoltPhys06 3.P.026.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
A person walks the path shown below. The total trip consists of four straight-line paths.
Path 1 is 30.0 m due east.
Path 2 is 270.0 m due south.
Path 3 is 120.0 m 30.0° south of west.
Path 4 is 190.0 m 60.0° north of west.
At the end of the walk, what is the person's resultant displacement?
Enter a number.
 m at
Enter a number.
° south of west.

[Figure not drawn to scale]


3. –/2 points Notes Question: HoltPhys06 4.P.010.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Four forces act on a hot-air balloon, shown from the side in the figure below. Find the magnitude and direction of the resultant force on the balloon if F1 = 5200 N, F2 = 1500 N, F3 = 900 N, and F4 = 3750 N.
Enter a number.
 N at
Enter a number.
° clockwise from F2


4. 6/9 points All Submissions Notes Question: HoltPhys06 5.P.023.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9
1 1 1 1 1 1 0/1 0/1 0/1
1/50 1/50 1/50 1/50 2/50 1/50 0/50 0/50 0/50
Total
6/9
 
A 56 kg skier is at the top of a slope, as shown in the illustration below. At the initial point A, the skier is h = 8.4 m vertically above the final point B.
(a) Set the zero level for gravitational potential energy at B, and find the gravitational potential energy associated with the skier at A and B. Then find the difference in potential energy between these two points.
PEA =
Enter a number.
Your answer is correct. J
PEB =
Enter an exact number.
Your answer is correct. J
difference in PE =
Enter a number.
Your answer is correct. J

(b) Repeat this problem with the zero level at A.
PEA =
Enter an exact number.
Your answer is correct. J
PEB =
Enter a number.
Your answer is correct. J
difference in PE =
Enter a number.
Your answer is correct. J

(c) Repeat this problem with the zero level midway down the slope, at a height of 4.2 m.
PEA =
Enter a number.
 J
PEB =
Enter a number.
 J
difference in PE =
Enter a number.
 J


5. –/5 points Notes Question: HoltPhys06 18.P.043.
Question part
Points
Submissions
1 2 3 4 5
0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50
Total
0/5
 
Four resistors are connected to a battery with a terminal voltage of 12.0 V, as shown below, with R1 = 65 , R2 = 76 , and R3 = 24 .

(a) Determine the equivalent resistance for the circuit.
Enter a number.
(b) Determine the current in the battery.
Enter a number.
 A
(c) Determine the current in the 30.0 capital omega resistor
Enter a number.
 A
(d) Determine the power dissipated by R1
Enter a number.
 W
(e) Determine the power dissipated by R3
Enter a number.
 W

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