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Hecht - Physics: Alg/Trig 3/e (Homework)

James Finch

Physics - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 6 / 6

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 –/2 –/1 –/1
Total
6/6 (100.0%)

  • Instructions

    Here are some textbook questions from Physics: Alg/Trig 3/e by Eugene Hecht published by Brooks/Cole Publishing. 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 Hecht3 1.P.031. My Notes
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Most people lose about 74 hairs per day out of a typical headful of 128 000. Suppose each hair averages 22 cm long. If you placed a year's lost hairs end-to-end, how far would they extend?
m
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2. –/1 points Hecht3 2.P.029. My Notes
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–/1
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Use Fig. 2.5 to calculate the distance traveled by the bee (whose speed-time graph is plotted) in the time interval from 1.28 s to 2.24 s.
m

Figure 2-5
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3. –/2 points Hecht3 3.P.067. My Notes
Question Part
Points
Submissions Used
1 2
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–/2
 
Two trains heading straight for each other on the same track are 250 m apart when their engineers see each other and hit the brakes. The Express, heading west at 99 km/h, slows down, accelerating at an average of -4 m/s2 while the eastbound Flyer, traveling at 134 km/h, slows down, accelerating at an average of -3 m/s2. Will they collide?
    

If they do not collide, give the distance by which they are separated when they stop. If they do collide, give the distance they would have to have started from if they were to avoid colliding (barely).
m
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4. –/1 points Hecht3 4.P.065. My Notes
Question Part
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1
–/1
0/50
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–/1
 
Referring to Fig 4.22b, suppose m2 equals 2.00 kg and it's on a frictionless surface. If m1 = 8.8 kg, someone holds m2 at rest, what will be the tension in the string?
N

Figure 4.22b
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5. –/1 points Hecht3 5.MC.020. My Notes
Question Part
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1
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A spacecraft is in a circular orbit about a planet located at point O in Fig. MC20. When it reaches point A on its orbit, the First Mate throws a canister out the front port straight ahead; the canister goes into a new orbit shown in
    

Figure MC20
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