WebAssign

Thursday, September 2, 2010 10:41 EDT

Logged in as demo@demo

Log out

Tipler and Mosca - Physics for S&E 6/e (Homework)

James Finch

Physics - College, section 1, Fall 2011

Instructor: Dr. Friendly

Current Score : 6 / 10

Due : Tuesday, December 20, 2011 19:00 EST

Print Assignment
Question
Points
1 2 3 4 5 6
1 1 2/3 1/2 0/1 1/2
Total
6/10 (60.0%)

  • Description

    W. H. Freeman and WebAssign

    Physics for Scientists and Engineers by Tipler and Mosca is now available as a WebAssign Premium product...designed to provide you with the most powerful online homework solution to complement your course...and your students with a fully interactive and affordable learning experience!

    WebAssign Premium includes over 4,200 online homework problems, interactive tutorials and resources, a customizable eBook and an integrated student solutions manual at one low price. Students interested in purchasing a printed textbook can order one directly from their WebAssign course page, at a considerable savings (in some cases, less than half the cost of a used textbook!).

    You can check out a sampling of this exciting new product line in the simulated assignment below, designed to show you a range of problem-types and features found in WebAssign Premium. To see even more of this powerful product, sign up for a Free Test Drive today and see how WebAssign Premium can help your students get more mileage out of the course today!

    Problem 1: Every problem from the text (over 4,200!) is available to assign, with algorithmic variables where appropriate. Every problem includes a link to the appropriate section of a complete interactive eBook, (also available through a dynamic table of contents from their WebAssign homepage), allowing students to highlight and take notes as they read. Instructors can easily customize any aspect of the eBook, from including their own notes to rewriting entire sections to match their lectures, providing students with a completely cohesive learning experience.

    Every problem includes a line of helpful, problem-specific feedback to help students check their understanding.

    Problem 2: Where appropriate, animated simulations are available to students, allowing them to manipulate values to help visualize essential physics concepts.

    Problem 3: Many problems include detailed stepped-out solutions, using the same problem-solving strategies and design as the text worked examples. The detailed solutions, available to students at each instructor's discretion, use the same algorithmic values assigned in the problem, further driving problem-solving mastery.

    Every solution found in the printed student's solutions manuals is available interactively in WebAssign Premium, saving your students even more money!

    Problem 4: Complete student tutorials are available to help students as hints from within applicable problems...

    Problem 5: ...and as stand-alone assignable problems as well. These tutorials, developed and class-tested over years by the University of Illinois Physics Education Group, step students through a series of sub-questions to drive students to a stronger conceptual understanding.

    Problem 6: Many questions use WebAssign's PencilPad, which allow students to draw their sketches online and compare their response to an accurate free body diagram manual or an algorithmically generated plot. Students' submissions are stored so instructors can check their work.

    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.

Assignment Submission

For this assignment, the number of submissions for each answer box is counted independently. The number of submissions remaining changes only if you submit a new or changed answer.

1. 1/1 points All Submissions Notes Question: Tipler6 4.P.094.
Question part
Points
Submissions
1
1
2/50
Total
1/1
 
Consider the ideal Atwood's machine below. When N washers are transferred from the left side to the right side, the right side descends 1.96 cm in 0.10 s. Find N.
Enter a number.
Your answer is correct.


Your work in question(s) will also be submitted or saved.
2. 1/1 points All Submissions Notes
Question part
Points
Submissions
1
1
3/50
Total
1/1
 
A 13 kg block is suspended from the ceiling of an elevator by a cord rated to withstand a tension of 232 N. Shortly after the elevator starts to ascend, the cord breaks. What was the minimum acceleration of the elevator when the cord broke?
Enter a number.
Your answer is correct. m/s2


Your work in question(s) will also be submitted or saved.
3. –/3 points All Submissions Notes Question: Tipler6 4.P.045.soln.
Question part
Points
Submissions
1 2 3
–/1 –/1 –/1
3/50 1/50 1/50
Total
–/3
 
To train astronauts to work on the moon, where the free-fall acceleration is only about 1/6 of that on Earth, NASA submerges them in a tank of water. If an astronaut, who is carrying a backpack, air conditioning unit, oxygen supply, and other equipment, has a total mass of 230 kg, determine the following quantities.

her weight on Earth (including backpack, etc.)
Enter a number.
 kN
her weight on the moon (including backpack, etc.)
Enter a number.
 N
the required upward buoyancy force of the water during her training for the moon's environment on Earth
Enter a number.
 kN


Your work in question(s) will also be submitted or saved.
Viewing Saved Work View Last Response
4. 1/2 points All Submissions Notes
Question part
Points
Submissions
1 2
0/1 1
2/50 1/50
Total
1/2
 
A simple accelerometer can be made by suspending a small massive object from a string attached to a fixed point on an accelerating object. Suppose such an accelerometer is attached to point P on the ceiling of an automobile traveling in a straight line on a flat surface at constant acceleration. Due to the acceleration, the string will make an angle θ with the vertical.
(a) Show that the magnitude of the acceleration a is related to the angle θ by a = gtanθ. (Do this on paper. Your instructor may ask you to turn in this work.)

(b) Suppose the automobile brakes steadily to rest from 48 km/h over a distance of 59 m. What angle will the string make with the vertical?
Enter a number.
Your answer is incorrect.°

Will the suspended object be positioned below and ahead or below and behind point P during the braking?
     Your answer is correct.


There are only two forces acting on the massive object, which is experiencing the same acceleration as the automobile. Use Newton's second law to describe the influence of the forces acting on the suspended object on its motion.
Your work in question(s) will also be submitted or saved.
5. –/1 points Notes Question: Tipler6 4.IE.001.
Question part
Points
Submissions
1
0/1
0/50
Total
0/1
 

Mass on Two Strings

A block of mass M = 12 kg is suspended at rest by two strings attached to walls, as shown in the figure. The left string is horizontal and the right string makes an angle θ = 42° with the horizontal. What is the tension in the left string? (Assume the ring where the strings come together is massless.)
Tleft =
Enter a number.
 N    


Your work in question(s) will also be submitted or saved.
6. 1/2 points All Submissions Notes Question: Tipler6 4.P.073.
Question part
Points
Submissions
1 2
1 0/1
1/50 0/50
Total
1/2
 
A 59.0-kg object supported by a vertical rope. The rope, and thus the object, is then accelerated from rest upward so that it attains a speed of 13.00 m/s in 0.700 s.
(a) Draw the object's free-body diagram with the relative lengths of the vectors showing the relative magnitudes of the forces.

Get Flash Player
Flash Player version 10 or higher is required for this question.
You can get Flash Player free from Adobe's website.



(b) Use the free-body diagram and Newton's laws to determine the tension in the rope.
Enter a number.
 N

Kinematics expressions can be used to determine the magnitude and direction of the acceleration. A non-zero resultant force is required to accelerate the object.
Your work in question(s) will also be submitted or saved.
Home My Assignments