Which correctly represents the orientation of the electric field, magnetic field, and direction of propagation for an EM wave?
Answer: A
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Which is the correct order for the following steps used in the scientific method? I. Conclude II. Analyze III. Gather evidence IV. Test V. Hypothesize VI. Establish laws
a. VI, V, III, II, IV, I b. III, IV, II, V, VI, I c. V, III, IV, II, I, VI d. III, V, IV, II, I, VI
Sonic Booms: As a supersonic airplane increases its speed more and more, the half-angle of the conical shock wave
A. increases. B. decreases. C. is not affected.
Which travels with the greatest speed in a vacuum?
A) radio waves B) light waves C) X-rays D) gamma rays E) all have the same speed
The K-ratio in a uranium fuel reactor is defined as the average number of neutrons from each fission event that will cause another event. In a well-functioning reactor, it is desired that the K-ratio have what value?
a. zero b. 0.5 c. 1.0 d. 2.0