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Cutnell and Johnson - Physics 10/e (Homework)

James Finch

Physics - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 16 / 17

Due : Monday, January 28, 2030 00:00 EST

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5 6 7
6/6 2/2 2/2 1/1 2/2 1/1 2/3
Total
16/17 (94.1%)

  • Instructions

    In this assignment we present questions from chapter 4 of Physics 10th edition, by Cutnell, Johnson, Young and Stadler, published by John Wiley & Sons, representing various question types found in the book.

    Question 1 features an optional Guided Online (GO) tutorial. Each GO tutorial steps a student through a similar problem with feedback enhanced multiple choice questions at each step. Other questions within the tutorial help students solve the problem symbolically to aid in mastering the underlying concepts involved in the problem.

    Question 2 features an Interactive Solution, where students are stepped through a solution to a similar problem while being prompted to provide the calculations.

    Question 3 features Wiley’s Interactive LearningWare, which use animations, visualization, and narration to engage students in step-by-step problem solving and skill building.

    Questions 4-7 are examples of standard end-of-chapter questions.

    View the complete list of WebAssign questions available for this textbook. This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

    The answer key will display after the first submission for demonstration purposes. Instructors can configure these to display after the due date or after a specified number of submissions.

Assignment Submission

For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.

Assignment Scoring

Your last submission is used for your score.

1. 6/6 points  |  Previous Answers CJ10 4.P.003.GO. My Notes
Question Part
Points
Submissions Used
1 2 3 4 5 6
1/1 1/1 1/1 1/1 1/1 1/1
1/50 1/50 1/50 1/50 1/50 1/50
Total
6/6
 
Two horizontal forces, vector F1 and vector F2, are acting on a box, but only vector F1 is shown in the drawing. vector F2 can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that vector F1 = +9.9 N and the mass of the box is 3.3 kg. Find the magnitude and direction of vector F2 when the acceleration of the box is the following.
(a) Find the magnitude and direction of vector F2 when the acceleration of the box is +6.8 m/s2. (Indicate the direction of the force by the sign of your answers.)
vector F2 = Correct: Your answer is correct. Correct: Your answer is correct.

(b) Find the magnitude and direction of vector F2 when the acceleration of the box is -6.8 m/s2. (Indicate the direction of the force by the sign of your answers.)
vector F2 = Correct: Your answer is correct. Correct: Your answer is correct.

(c) Find the magnitude and direction of vector F2 when the acceleration of the box is 0 m /s2. (Indicate the direction of the force by the sign of your answers.)
vector F2 = Correct: Your answer is correct. Correct: Your answer is correct.
GO Tutorial

Additional Materials

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
2. 2/2 points  |  Previous Answers CJ10 4.P.047. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
2/50 2/50
Total
2/2
 
Review Interactive Solution 4.47 in preparation for this problem.

An 78.5-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is 0.51.
(a) What is the magnitude of the frictional force?
Correct: Your answer is correct. N

(b) If the player comes to rest after 1.5 s, what was his initial velocity?
Correct: Your answer is correct. m/s

Additional Materials

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
3. 2/2 points  |  Previous Answers CJ10 4.P.062. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
1/50 1/50
Total
2/2
 
Interactive LearningWare 4.3 provides a review of the concepts that are important in this problem.

During a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts. The limb exerts a downward force of 138 N on the wire. The left section of the wire makes an angle of 12° relative to the horizontal and sustains a tension of 447 N. Find the magnitude and direction of the tension that the right section of the wire sustains.
magnitude     Correct: Your answer is correct. N
direction     Correct: Your answer is correct. ° (counterclockwise from x-axis)

Additional Materials

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
4. 1/1 points  |  Previous Answers CJ10 4.P.001. My Notes
Question Part
Points
Submissions Used
1
1/1
2/50
Total
1/1
 
An airplane has a mass of 30,500 kg and takes off under the influence of a constant net force of 45,000 N. What is the net force that acts on the plane's 80 kg pilot?
Correct: Your answer is correct. N

Additional Materials

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
5. 2/2 points  |  Previous Answers CJ10 4.P.014. My Notes
Question Part
Points
Submissions Used
1 2
1/1 1/1
2/50 1/50
Total
2/2
 
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.17 kg. The ball approaches the cushion with a velocity of
+2.2 m/s
 and rebounds with a velocity of
−2.1 m/s.
 The ball remains in contact with the cushion for a time of 4.7 10-2 s. What is the average net force (magnitude and direction) exerted on the ball by the cushion?
magnitude     Correct: Your answer is correct. N
direction     Correct: Your answer is correct.

Additional Materials

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
6. 1/1 points  |  Previous Answers CJ10 4.P.056. My Notes
Question Part
Points
Submissions Used
1
1/1
2/50
Total
1/1
 
Part a of the drawing shows a bucket of water suspended from the pulley of a well; the tension in the rope is 95.5 N. Part b shows the same bucket of water being pulled up from the well at a constant velocity. What is the tension in the rope in part b?
Correct: Your answer is correct. N

Additional Materials

Your work in question(s) will also be submitted or saved.
Viewing Saved Work Revert to Last Response
7. 2/3 points  |  Previous Answers CJ10 4.P.092. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 1/1 1/1
0/50 1/50 1/50
Total
2/3
 
A small sphere is hung by a string from the ceiling of a van. When the van is stationary, the sphere hangs vertically. However, when the van accelerates, the sphere swings backward so that the string makes an angle of θ with respect to the vertical.
(a) Derive an expression for the magnitude a of the acceleration of the van in terms of the angle θ and the magnitude g of the acceleration due to gravity.


(b) Find the acceleration of the van when θ = 26.5°.
Correct: Your answer is correct. m/s2

(c) What is the angle when the van moves with a constant velocity?
Correct: Your answer is correct. °

Additional Materials

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