What total energy is stored in the group of capacitors shown if the potential difference Vab is equal to 50 V?
a.
48 mJ
b.
27 mJ
c.
37 mJ
d.
19 mJ
e.
10 mJ
d
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A block is on a frictionless horizontal table, on earth. This block accelerates at 3.6 m/ when a horizontal force is applied to it. The block and table are then set up on the moon where the acceleration due to gravity is 1.62 m/
A horizontal force of 45 N is applied to the block when it is on the moon. What acceleration does this force impart to the block? A) 1.8 m/ B) 1.6 m/ C) 2.0 m/ D) 2.2 m/ E) 2.3 m/
What are thought to be some possible causes of triggering the contraction of an interstellar cloud?
What will be an ideal response?
Molecular Speeds: Oxygen molecules are 16 times more massive than hydrogen molecules. At a given temperature, how do their average molecular speeds compare? The oxygen molecules are moving
A. four times faster than the hydrogen molecules.
B. at 1/4 the speed of the hydrogen molecules.
C. sixteen times faster than the hydrogen molecules.
D. at 1/16 the speed of the hydrogen molecules.
E. at 1/
the speed of the hydrogen molecules.
Torque: A flat rectangular loop of wire carrying a 4.0-A current is placed in a uniform 0.60-T magnetic field. The magnitude of the torque acting on this loop when the plane of the loop makes a 30° angle with the field is measured to be 1.1 N ? m. What is the area of this loop?
A. 0.20 m2 B. 0.40 m2 C. 0.26 m2 D. 0.80 m2 E. 0.53 m2