WebAssign

Friday, November 20, 2009 20:32 EST

Logged in as demo@demo

Logout

Hewitt et al. - Conceptual Physical Science 3/e (Homework)

James Finch

Physical Science, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 20/21

Due: Wednesday, October 13, 2010 17:30 EDT

About this Assignment

Question
Points
1 2 3 4 5
1 2/3 2 1 14
Total
20/21

Description

Here are some textbook questions from Conceptual Physical Science 3/e by Paul G. Hewitt, John Suchocki, and Leslie A. Hewitt published by Addison-Wesley. 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. 1/1 points All Submissions Notes Question: HewCPS3 1.E.031.
Question part
Points
Submissions
1
1
1/50
Total
1/1
 
Someone standing at the edge of a cliff (as in Figure 1.24) throws a ball straight up at a certain speed and another ball nearly straight down with the same initial speed.

Figure 1.24.
If air resistance is negligible, which ball has the greater speed when it strikes the ground below?
    

Your answer is correct.



2. 2/3 points All Submissions Notes Question: HewCPS3 2.E.027.
Question part
Points
Submissions
1 2 3
1 1 0/1
2/50 1/50 0/50
Total
2/3
 
If a Mack truck and Honda Civic have a head-on collision, upon which vehicle is the impact force greater?
    

Your answer is correct.


Which vehicle undergoes the greater change in its motion?
    

Your answer is correct.


Explain.


3. 2/2 points All Submissions Notes Question: HewCPS3 3.P.003.
Question part
Points
Submissions
1 2
1 1
2/50 2/50
Total
2/2
 
A 9 kg fish swimming at 3 m/s swallows an absent-minded 1 kg fish at rest.
(a) What is the speed of the larger fish after lunch?
Enter a number.
Your answer is correct. m/s
(b) What would be its speed if the smaller fish were swimming toward it at 4 m/s?
Enter a number.
Your answer is correct. m/s


4. 1/1 points All Submissions Notes Question: HewCPS3 3.TB.1.17.
Question part
Points
Submissions
1
1
13/50
Total
1/1
 
Padded dashboards in cars are safer in an accident than nonpadded ones because an occupant hitting the dash has (select all that apply)

Your answer is correct.




5. 14/14 points All Submissions Notes Question: HewCPS3 17.E.034.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 1 1 1 1 1 1 1 1 1 1 1 1 1
1/50 1/50 1/50 2/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50
Total
14/14
 
Balance these equations. (Use the lowest possible coefficients.)
(a)
Answer is not case sensitive.
Your answer is correct. Fe(s) +
Answer is not case sensitive.
Your answer is correct. O2(g) →
Answer is not case sensitive.
Your answer is correct. Fe2O3(s)

(b)
Answer is not case sensitive.
Your answer is correct. H2(g) +
Answer is not case sensitive.
Your answer is correct. N2(g) →
Answer is not case sensitive.
Your answer is correct. NH3(g)

(c)
Answer is not case sensitive.
Your answer is correct. Cl2(g) +
Answer is not case sensitive.
Your answer is correct. KBr(aq) →
Answer is not case sensitive.
Your answer is correct. Br2(l) +
Answer is not case sensitive.
Your answer is correct. KCl(aq)

(d)
Answer is not case sensitive.
Your answer is correct. CO2(g) +
Answer is not case sensitive.
Your answer is correct. H2O(l) →
Answer is not case sensitive.
Your answer is correct. C6H12O6(s) +
Answer is not case sensitive.
Your answer is correct. O2(g)

Home My Assignments