What kinds of objects are found in the Milky Way disk?
A. Blue stars
B. Some red stars
C. Open clusters
D. Gas and dust
E. All of the above
Ans: E. All of the above
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At what rate is thermal energy generated in the 20-? resistor when ? = 20 V?
a.
6.5 W
b.
1.6 W
c.
15 W
d.
26 W
e.
5.7 W
A small dense object is suspended from the rear view mirror in a car by a lightweight fiber. As the car is accelerating at 1.90 m/s2, what angle does the string make with the vertical?
An airplane starts from rest and accelerates at a constant 10.8 m/s2. What is its speed at the end of a 400 m-long runway?
A) 4320 m/s B) 93.0 m/s C) 37.0 m/s D) 186 m/s E) 65.7 m/s
All three circuits shown below have R = 100 ?, L = 0.1 H and emf ? = (5.0 V) sin (377 t). Which statement regarding the angular resonance frequencies ?A, ?B, and ?C is correct?
?
?
a.
?C > ?A = ?B
b.
?C < ?A = ?B
c.
?A = ?B = ?C
d.
?B < ?A = ?C
e.
?B > ?A = ?C