Which of the following represents a case in which you are not accelerating?
A) going from 0 to 60 miles per hour in 10 seconds
B) driving in a straight line at 60 miles per hour
C) slamming on the brakes to come to a stop at a stop sign
D) driving 60 miles per hour around a curve
B
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An electron inside a hydrogen atom is confined to within a space of 0.110 nm
What is the minimum uncertainty in the electron's velocity? ( h = 1.055 × 10-34 J ? s, mel = 9.11 × 10-31 kg) A) 1.05 × 106 m/s B) 1.05 × 108 m/s C) 1.50 × 106 m/s D) 1.05 × 1010 m/s E) 1.50 × 108 m/s
The intensity of unpolarized light passing through a single sheet of polarizing material changes by a factor of:
a. 0.5. c. cos2 q. b. 1. d. cos q.
Planetary orbits are circles
Indicate whether the statement is true or false
Magnesium alloys have low ductility because of their _________close-packed crystal structure.
Fill in the blank(s) with the appropriate word(s).