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Ostdiek and Bord - Inquiry into Physics 6/e (Homework)

James Finch

Physics - College, section 1, Fall 2019

Instructor: Dr. Friendly

Current Score : 11 / 11

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

Last Saved : n/a Saving...  ()

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11/11 (100.0%)

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    Here are some textbook questions from Inquiry into Physics 6/e by Vern J. Ostdiek and Donald J. Bord 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. –/2 points OBInPhys6 1.Q.004. My Notes
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What are the "basic" or "fundamental" physical quantities? (Select all that apply.)


Why are they called that?

This answer has not been graded yet.

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2. –/3 points OBInPhys6 2.P.010. My Notes
Question Part
Points
Submissions Used
1 2 3
–/1 –/1 –/1
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–/3
 
A person stands on a scale inside an elevator at rest. The scale reads 800 N.
(a) What is the person's mass?
kg

(b) The elevator accelerates upward momentarily at the rate of 2 m/s2. What does the scale read then?
N

(c) The elevator then moves with a steady speed of 5 m/s. What does the scale read?
N
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3. –/2 points OBInPhys6 3.P.008. My Notes
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–/2
 
Two persons on ice skates stand face to face and then push each other away. Their masses are 60 and 90 kg. Find the ratio between the speed of the smaller person to the speed of the larger person immediately afterward.


Which person has the higher speed?
    
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4. –/2 points OBInPhys6 4.P.008. My Notes
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0/50 0/50
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–/2
 
A small statue is recovered in an archaeological dig. Its weight is measured to be 96 lb and its volume 0.08 ft3.
(a) What is the statue's weight density?
Dw = lb/ft3
(b) What substance is it?
    
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5. –/2 points OBInPhys6 7.P.014. My Notes
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–/2
 
All of the electrical outlets in a room are connected in a single parallel circuit. The circuit is equipped with a 20-A fuse, and the voltage is 120 V.
(a) What is the maximum power that can be supplied by the outlets without blowing the fuse?
P = W

(b) How many 1,200-W appliances can be plugged into the sockets without blowing the fuse?
appliance(s)
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