Banked Curves: The curved section of a speedway is a circular arc having a radius of 190 m. This curve is properly banked for racecars moving at 34 m/s. At what angle with the horizontal is the curved part of the speedway banked?
A. 32°
B. 34°
C. 30°
D. 28°
E. 26°
Answer: A
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Earthquake activity is associated with
A) divergent, convergent, and transform plate boundaries. B) convergent and transform plate boundaries. C) divergent and convergent boundaries. D) transform plate boundaries.
What is the focal length of a pair of contact lenses that will allow a person with a near point of 125.0 cm to read a newspaper held 25.0 cm from his eyes?
A) -100 cm B) -31.3 cm C) 10.2 cm D) 20.8 cm E) 31.3 cm
Which of these particles has the least mass?
a. electron neutrino b. muon c. electron d. pion
A positive point charge q is placed off center inside an uncharged metal sphere insulated from the ground as shown. Where is the induced charge density greatest in magnitude and what is its sign?
?
?
a.
A; negative
b.
A; positive
c.
B; negative
d.
B; positive
e.
C; negative