A force on a particle depends on position such that
F(x) = (3.00 N/m2)x2 + ( 2.00 N/m)x for a particle constrained to move along the x-axis. What work is done by this force on a particle that moves from x = 0.00 m to x = 2.00 m?
A)
10.0 J
B)
12.0 J
C)
-32.0 J
D)
16.0 J
E)
32.0 J
B
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The Milky Way is part of I. a poor cluster. II. a rich cluster. III. the Virgo Cluster. IV. the Local Group
a. I and III b. I and IV c. II and III d. II and IV e. just III
The region in which charged particles are trapped by our magnetic fields is the
A) Aurora. B) ozone layers. C) Van Allen radiation belt. D) exosphere. E) ionosphere.
A 5.0-kg mass sits on the floor of an elevator that has a downward acceleration of 1.0 m/s2. On top of the 5.0-kg mass is an object of unknown mass. The force of the elevator on the 5.0-kg mass is 80 N up. Determine the unknown mass
a. 3.3 kg b. 2.4 kg c. 1.6 kg d. 4.1 kg e. 5.0 kg
In a certain region of space, a uniform electric field is in the x direction. A particle with negative charge is carried from x = 20.0 cm to x = 60.0 cm. The particle moves to a position where the electric potential is:
1.higher than before. 2.unchanged. 3.lower than before. 4.unpredictable.