The loop’s front end has emerged from the field.
A. forward (in the +x direction).
B. backward (in the -x direction).
C. zero.
D. some other direction (specify).
B. backward (in the -x direction).
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The ________ model for pulsars explains why there are a lot more neutron stars than pulsars, since most are not at the correct angle for us to observe their pulses
A) lighthouse B) Hawking C) Bell D) relativistic E) Einstein
A 10 D lens is placed in contact with a 15 D lens. What is the refractive power of the combination?
A. 15 D B. 25 D C. 0.67 D D. 5.0 D E. 1.5 D
What is the approximate diameter of the Milky Way Galaxy in light-years?
A. 100 B. 10 C. 100,000 D. 1,000,000 E. 1,000
A uniform solid sphere rolls down an incline of height 3 m after starting from rest. In order to calculate its speed at the bottom of the incline, one needs to know:
a. the mass of the sphere. c. the mass and the radius of the sphere. b. the radius of the sphere. d. no more than is given in the problem.