An example of a diverging spherical mirror is
a. a bathroom mirror.
b. a round Christmas tree ornament.
c. a flashlight reflector.
d. none of these.
b
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An electron is fired through a pair of deflection plates, which produce a 2.00 cm long region with an electric field of 4000 N/C perpendicular to the electron's initial velocity. If the initial speed of the electron is 
what angle will its new velocity make with the direction of the original velocity?
A. 14
B. 8.0
C. 5.5
D. 4.6
D. 4.6
The electrical force is stronger between the nucleus and an inner electron for atoms of
A) low atomic number. B) high atomic number. C) both of these D) neither of these
Which law of thermodynamics states that no system can reach absolute zero?
A) First law B) Second law C) Third law D) all of the above
In a police ballistics test, a 2.00-g bullet suddenly hits and becomes embedded in a 5.00-kg wood block which is hanging from a 1.20-m long string. This causes the block to swing through an arc of 3.50°
What was the speed of the bullet just before it hit the block? A) 16.7 m/s B) 524 m/s C) 25.3 m/s D) 262 m/s E) 789 m/s