A straight wire of length L carries a current I in the positive z direction in a region where the magnetic field is uniform and specified by Bx = 3B, By = ?2B, and Bz = B, where B is a constant. What is the magnitude of the magnetic force on the wire?
a. 3.2 ILB
b. 5.0 ILB
c. 4.2 ILB
d. 3.6 ILB
e. 1.0 ILB
d
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A ray of light goes from one transparent material into another, as shown in the figure. What can you conclude about the indices of refraction of these two materials?
A) n1 ? n2 B) n1 > n2 C) n1 = n2 D) n2 ? n1 E) n2 > n1
Suppose that we allow an ideal gas containing N atoms to expand slowly and isothermally to twice its initial volume. By what factor does its multiplicity increase?
A. By a factor of 2. B. By a factor of 2N. C. The multiplicity does not change. D. The answer depends on the gas’s initial volume. E. The answer depends on the gas’s fixed temperature.
The following force vectors act on an object: i) 50.0 newtons at 45.0 degree north of east and ii) 25.0 newtons at 30.0 degree south of east. Which of the following represents the magnitude of the resultant and its angle relative to the easterly direction?
Determine the number of boundary and initial conditions needed to solve the differential equation.
