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Hecht - Physics: Alg/Trig 2/e (Homework)

James Finch

Physics - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 1 / 8

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

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5
–/1 1/4 –/1 –/1 –/1
Total
1/8 (12.5%)

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    Here are some textbook questions from Physics: Algebra/Trig 2/e by Hecht published by Brooks/Cole. Click here for a list of all of the questions coded in WebAssign. This demo assignment allows many submissions and allows you to try another version of the same question for practice.

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1. –/1 points Hecht2 3.P.017. My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
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–/1
 
What is the instantaneous acceleration of the object whose motion is depicted in Fig. 3.2a at a time of 1.58 s?
m/s2

Figure 3.2a.
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2. 1/4 points  |  Previous Answers Hecht2 3.P.019. My Notes
Question Part
Points
Submissions Used
1 2 3 4
–/1 –/1 1/1 –/1
0/50 0/50 1/50 0/50
Total
1/4
 
In Fig. P18, what was the car's instantaneous acceleration at t = 3.0 s?
m/s2
Is the instantaneous acceleration positive or negative at t = 3.7 s?
    

How about at t = 1.1 s?
     Correct: Your answer is correct.


What is the instantaneous acceleration of the car at t = 0.25 s?
m/s2

Figure P18.
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3. –/1 points Hecht2 4.MC.01. My Notes
Question Part
Points
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1
–/1
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Total
–/1
 
Figure MC1 shows a ball rolling down a curved incline. Which diagram depicts the resulting motion correctly?


Figure MC1.

    
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4. –/1 points Hecht2 4.P.010 My Notes
Question Part
Points
Submissions Used
1
–/1
0/50
Total
–/1
 
The scale in Fig. P10 is being pulled on via three ropes. (The force on each rope is 215 N.) What net force does the scale read?
N


Figure P10.

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5. –/1 points Hecht2 4.MC.23. My Notes
Question Part
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1
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–/1
 
In order to hold the weight in Fig. MC23 in equilibrium, the hand and the ceiling exert forces, respectively, of


Figure MC23.

    
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