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Ohanian and Markert - Physics for Eng and Sci 3/e (Homework)

James Finch

Physics - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score : 0 / 16

Due : Saturday, November 20, 2010 20:00 EST

About this Assignment

Question
Points
1 2 3 4 5
0/8 0/2 0/2 0/2 0/2
Total
0/16

Description

Here are some textbook questions from Physics for Engineers and Scientists 3/e by Hans C. Ohanian and John T. Markert published by W. W. Norton & Company. 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. –/8 points Notes Question: OhanPSE3 3.P.028.
Question part
Points
Submissions
1 2 3 4 5 6 7 8
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/8
 
Four vectors are given by the following.
= 2.8 + 4.2
= 1.1 + 4.5 + 2.5
= 1.5 + 2 + 3
= 3 + 1.5
(a) What is the vector = + + + ?
Enter a number.
 +
Enter a number.
 +
Enter a number.

(b) What is the vector = - + - ?
Enter a number.
 +
Enter a number.
 +
Enter a number.

(c) What is the magnitude of ?
Enter a number.

(d) What is the magnitude of ?
Enter a number.


2. –/2 points Notes Question: OhanPSE3 6.P.028
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Two masses, of 2.4 kg each, connected by a string slide down a ramp making an angle of 50° with the horizontal (see figure). The mass m1 has a coefficient of kinetic friction 0.60, and the mass m2 has a coefficient of kinetic friction equal to 0.40.
(a) Find the acceleration of the masses.
Enter a number.
 m/s2

(b) Find the tension in the string.
Enter a number.
 N


3. –/2 points Notes Question: OhanPSE3 7.P.024.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
A 300-g mass is hung from a vertical spring, stretching it 18 cm from its old equilibrium to its new one.
(a) How much work was done by gravity?
Enter a number.
 J

(b) How much work was done by the spring?
Enter a number.
 J


4. –/2 points Notes Question: OhanPSE3 22.P.038.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
Point charges +Q and -2Q are separated by a distance d. A point charge q is equidistant from these charges, at a distance x from their midpoint (see figure). What is the electric force on q?
x-component
Enter a mathematical expression.
Click here to preview your answer.
y-component
Enter a mathematical expression.
Click here to preview your answer.

Click here for help with symbolic formatting.

5. –/2 points Notes Question: OhanPSE3 29.P.008.
Question part
Points
Submissions
1 2
0/1 0/1
0/50 0/50
Total
0/2
 
An electron is traveling with a velocity of 1.80 106 m/s at an angle of 120° to the direction of a 0.282-T magnetic field that points along the x axis (see figure). What is the force on the electron?
Magnitude
Enter a number.
 N
Direction
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