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Ostdiek and Bord - Inquiry into Physics 8/e (Homework)

Chris Read

Cengage Learning, section 1, Fall 2019

Instructor: Mr. Cengage

Current Score : 4 / 20

Due : Friday, September 6, 2019 11:30 PM EDT

Last Saved : n/a Saving...  ()

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Question
Points
1 2 3 4 5 6 7 8 9 10 11 12
1/1 –/1 0/1 –/1 –/2 –/2 1/4 1/1 –/1 0/1 –/1 1/4
Total
4/20 (20.0%)

  • Instructions

    Inquiry into Physics, 8th edition, by Vern J. Ostdiek and Donald J. Bord and published by Cengage Learning, continues its strong emphasis on the inquiry approach to learning physics. Throughout, students are asked to try things, to discover relationships between physical quantities on their own, and to look for answers in the world around them and not seek them only in books or on the Internet. The WebAssign component for this title engages students with immediate question feedback, new Interactive Video Vignettes, and a complete eBook..

    Questions 1-5 are quantitative problems in which students apply fundamental concepts and principles using simple arithmetic or substitution skills.

    Questions 1 and 3 include Watch It video solutions to one algorithmic version of each problem.

    Questions 6-11 feature conceptual questions (multiple choice, drop-down, and ranking).

    Question 12 is an Interactive Video Vignette (IVV) question. IVVs encourage students to address their alternate conceptions outside of the classroom. They include online video analysis and interactive individual tutorials to address learning difficulties identified by PER (Physics Education Research). This demo assignment allows many submissions and allows you to try another version of the same question for practice wherever the problem has randomized values.

Assignment Submission

For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.

Assignment Scoring

Your last submission is used for your score.

1. 1/1 points  |  Previous Answers OBInPhys8 4.P.004. My Notes
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1/1
 
The water in the plumbing in a house is at a gauge pressure of 280,000 Pa. What force does this cause on the top of the tank inside a water heater if the area of the top is 0.9 m2? (Ignore atmospheric pressure.)
252000 Correct: Your answer is correct. N
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2. –/1 points OBInPhys8 4.P.006. My Notes
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1
–/1
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–/1
 
A viewing window on the side of a large tank at a public aquarium measures 49 in. by 54 in. The average gauge pressure from the water is 5 psi. What is the total outward force on the window?
(No Response) lb
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3. 0/1 points  |  Previous Answers OBInPhys8 4.P.028. My Notes
Question Part
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1
0/1
1/100
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0/1
 
A boat (with a flat bottom) and its cargo weigh 5,600 N. The area of the boat's bottom is 8 m2. How far below the surface of the water is the boat's bottom when it is floating in water?
700 Incorrect: Your answer is incorrect. m
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4. –/1 points OBInPhys8 4.P.031. My Notes
Question Part
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1
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–/1
 
A dentist's chair with a person in it weighs 1950 N. The output plunger of a hydraulic system starts to lift the chair when the dental assistant's foot exerts a force of 36 N on the input piston. Neglecting any difference in the heights of the piston and the plunger, what is the ratio of the area of the plunger to the area of the piston?
Aplunger
Apiston
 = (No Response)
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5. –/2 points OBInPhys8 4.P.034. My Notes
Question Part
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1 2
–/1 –/1
0/100 0/100
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–/2
 
The volume flow rate in an artery that supplies blood to the brain is 3.20 ✕ 10−6 m3/s. If the cross-sectional area of the artery is 8.20 ✕ 10−5 m2, what is the average speed (in m/s) of the blood through this vessel?
(No Response) m/s
Find the average blood speed (in m/s) through a narrowed section of the artery where the cross-sectional area is reduced by a factor of 4.
(No Response) m/s
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6. –/2 points OBInPhys8 4.Q.023. My Notes
Question Part
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1 2
–/1 –/1
0/100 0/100
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–/2
 
The "suction cup" is a common device used to suspend pictures, plants, and other objects from walls, ceilings, windows, and other smooth surfaces. Why is the name "suction cup" a bit of a misnomer? Is anything really "sucking"?
    
How exactly does a "suction cup" work? Explain.
    
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7. 1/4 points  |  Previous Answers OBInPhys8 4.Q.038. My Notes
Question Part
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1 2 3 4
1/1 0/1 0/1 0/1
1/100 1/100 1/100 1/100
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1/4
 
Corrugated plastic pipes are commonly used to carry water away from the foundation areas of houses. These accordion-like pipes typically vary in diameter, alternating between smaller and larger widths, at regular intervals of a few centimeters or so, making them much more flexible than straight plastic pipes. Assuming the water in such pipes undergoes steady flow, describe the variations in the speed and pressure of the water as it moves along.
As the water moves through the pipe, it encounters constrictions where the diameter is smaller and thus the water speeds up Correct: Your answer is correct. . This means the pressure increases Incorrect: Your answer is incorrect. at those points along the pipe. Likewise, when the water encounters a place along the pipe where the diameter increases, the water speeds up Incorrect: Your answer is incorrect. and the pressure decreases Incorrect: Your answer is incorrect. .
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8. 1/1 points  |  Previous Answers OBInPhys8 4.Q.036. My Notes
Question Part
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1
1/1
4/100
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1/1
 
When two trains, going in opposite directions, are passing on tracks that are laid out close together, the train cars can often be seen to be leaning in toward one another where they are in proximity. How might the air passing through the narrow gap separating the two trains contribute to the observed attraction between their cars?
     Correct: Your answer is correct.
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9. –/1 points OBInPhys8 4.Q.041. My Notes
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1
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–/1
 
Five containers each hold the same volume of various liquids. Five blocks composed of various solids are fully submerged, one in each of the five containers. The blocks all have the same size and are all held at the same depth in the containers. The volume of each block is one-fourth the volume of the liquids in the containers.
container block mass (kg) liquid mass (kg)
a 0.04 0.10
b 0.02 0.20
c 0.02 0.16
d 0.03 0.18
e 0.04 0.15
For the given combinations of block mass, Mb, and liquid mass, Ml, rank the buoyant forces on the blocks from largest to smallest. If two or more circumstances yield the same buoyant forces, give them the same ranking. (Use only the letters a–e and ">" or "=" symbols. Do not include any parentheses around the letters.)
(No Response)
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10. 0/1 points  |  Previous Answers OBInPhys8 4.CQ.003. My Notes
Question Part
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0/1
 
Although a compound is a pure substance, it contains two or more elements combined chemically. Select each of the following that is an example of a mixture of pure elements and does not include one or more chemical compounds.
Incorrect: Your answer is incorrect.

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11. –/1 points OBInPhys8 4.CQ.017. My Notes
Question Part
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1
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–/1
 
Three different cylindrical storage tanks are used at a chemical processing plant. Each tank holds the same liquid and has a side access door two feet above the bottom. The doors are the same width and height but are not identical in thickness because the tanks have different shapes and sizes. (Assume each tank is filled to its top.)
  1. Tank A: 16 ft diameter, 32 ft tall
  2. Tank B: 32 ft diameter, 16 ft tall
  3. Tank C: 40 ft diameter, 16 ft tall
Which tank will require the thickest door, and how would the other tanks' doors compare?
    
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12. 1/4 points  |  Previous Answers OBInPhys8 2.IVV.006. My Notes
Question Part
Points
Submissions Used
1 2 3 4
–/1 –/1 0/1 1/1
0/100 0/100 1/100 1/100
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1/4
 
Watch the video vignette below, and be sure to follow any instructions when prompted during the videos. Then answer the questions below about the concepts discussed in the video.
(a)
The first collision shown in the video is one between two identical carts moving at the same speed. The forces that each cart exerts on the other during the collision is plotted. What does the plot of the forces indicate?
    
(b)
Later in the vignette, a video of a collision between a cart with a large mass and one with a small mass is shown. Again, the forces during the collision are plotted. What does the plot of the forces indicate in this case?
    
(c)
Consider the collision between the carts of unequal masses shown in vignette. Which of the following statements is true about the forces exerted by the carts on each other during this collision?
     Incorrect: Your answer is incorrect.
(d)
The collision between the lighter and heavier carts is shown again with a small toy figure riding on each cart. Which of the following statements is true about the different effects on the toy figures during the collision?
     Correct: Your answer is correct.
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