The core of a long solenoid with 1000 turns/m and a current of 0. 5 A is filled with an unknown material. It is found that the magnetic field along the axis of the solenoid increases by 0.0017%
What is the magnetic susceptibility of the unknown material? A)
1.7 × 10-5
B)
3.4 × 10-5
C)
0.0048
D)
-3.4 × 10-5
E)
0.0021
A
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Indicate whether the statement is true or false
The results of statistical studies of the exoplanet systems discovered to date suggests that what proportion of stars are likely to have a planet less than half the size of the Earth and in an orbit within a star's habitable zone?
A) 10 to 20% B) 50% C) much less than 10% D) more than 90%
In contrasting the distribution of the X-ray and gamma-ray bursts, we find:
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An auto moves at a steady 50 mph down a straight level road. The direction of the force of air resistance on the car is
A) forward. B) downward. C) backward. D) zero. E) sideways.