A 2.0-C charge moves with a velocity of (
m/s and experiences a magnetic force of 
N. The x component of the magnetic field is equal to zero. Determine the z component of the magnetic field.
A. ?3.0 T
B. +3.0 T
C. +5.0 T
D. ?5.0 T
E. +6.0 T
Answer: C
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Moment of Inertia: In the figure, a weightlifter's barbell consists of two identical small but dense spherical weights, each of mass 50 kg. These weights are connected by a thin 0.96-m rod with a mass of 24 kg. Find the moment of inertia of the barbell through the axis perpendicular to the rod at its center, assuming the two weights are small enough to be treated as point masses.
Fill in the blank(s) with the appropriate word(s).
Why didn't the Viking landers find organic molecules in the soil on Mars?
A) The Martian soil contains perchlorate, which destroyed the organic molecules when heated during the experiments. B) There are no organic molecules on Mars because they were carried away by the solar wind. C) The Viking landers were not designed to detect organic molecules. D) Organic molecules exist too deep below the surface of Mars to be detected.
Astronomers can measure the diameter of our Milky Way Galaxy by plotting the position of globular star clusters.
Answer the following statement true (T) or false (F)
The mutual inductance between two coils is 10 mH. The current in the first coil changes uniformly from 2.7 A to 5.0 A in 160 ms. If the second coil has a resistance of 0.60 ?, what is the magnitude of the induced current in the second coil?
What will be an ideal response?