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
c
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In an X-ray diffraction experiment using X-rays of ? = 0.500 × 10?10 m, a first-order maximum occurred at 5.00°. Find the crystal plane spacing.
A. 2.87 × 10?10 m B. 1.36 × 10?10 m C. 6.24 × 10?9 m D. 1.93 × 10?9 m E. 5.74 × 10?9 m
In a halo around the Milky Way's nuclear bulge lie about 200
a. brown dwarfs. b. quasars. c. red supergiants. d. globular clusters.
A straight wire that is 0.60 m and carrying a current of 2.0 A is placed at an angle with respect to the magnetic field of strength 0.30 T. If the wire experiences a force of magnitude 0
18 N, what angle does the wire make with respect to the magnetic field? A) 25° B) 35° C) 30° D) 60° E) 20°
Starting outside the region with the magnetic field, a single square coil of wire enters, moves across, and then leaves the region with a uniform magnetic field perpendicular to the page so that the graph shown below represents the induced emf. The loop moves at constant velocity
roman';vertical-align:middle;" />. As seen from above, a counterclockwise emf is regarded as positive. In which direction did the loop move over the plane of the page?
?
?
A. The loop moved from bottom to top.
B. The loop moved from top to bottom.
C. The loop moved from left to right.
D. The loop moved from right to left.
E. All of these directions of motion will produce the graph of emf vs t.