The last page of a book is numbered 764. The book is 3.0 cm thick, not including its covers. What is the average thickness (in centimeters) of a page in the book, rounded to the proper number of significant figures?
A) 0.0039 cm
B) 0.072 cm
C) 0.0079 cm
D) 0.00393 cm
E) 0.00785 cm
C
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Grandfather clocks are designed in a way that the weight at the bottom of the pendulum can be moved up or down by turning a small screw. Suppose you have a grandfather clock at home that runs fast
Should you turn the adjusting screw so as to raise the weight or lower the weight? A) Raise it. B) Lower it. C) It doesn't matter if you raise or lower the weight, as long as you displace it by the right amount. D) It doesn't matter if you raise or lower the weight, as long as you displace it with the correct initial velocity. E) Raising or lowering the weight doesn't help, the screw is there so that you can add or take away weight.
A 1.0-C point charge is 15 m from a second point charge, and the electric force on one of them due to the other is 1.0 N
What is the magnitude of the second charge? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) A) 10 nC B) 0.025 C C) 25 C D) 1.0 C E) 25 nC
Can you think of any refinements to the model for PCM thermal storage as shown schematically in Figure 10-27?
What will be an ideal response?
The nadir marks the point of the celestial sphere directly above your head
a. True b. False Indicate whether the statement is true or false