In the spectrum of white light which one of the following colors corresponds to the lowest temperature?
A)
Yellow
B)
Blue
C)
Red
D)
Green
E)
Orange
C
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A solar eclipse that occurs when the Moon's umbra reaches Earth's surface is called
a. a total solar eclipse. b. a partial solar eclipse. c. an annular solar eclipse. d. a penumbral solar eclipse. e. an umbral solar eclipse.
Magnetic Moment: A flat circular coil has 250 identical loops of very thin wire. Each loop has an area of 0.12 m2 and carries 15 mA of current. This coil is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What is the magnitude of the magnetic moment of the coil?
Fill in the blank(s) with the appropriate word(s).
A series of ocean waves are moving past a surfer at a frequency of 25 waves per hour. Approximately how many waves would the surfer expect during 41 minutes?
a. 1025 waves b. 17 waves c. 25 waves d. 37 waves
Resistors of values R1 = 6.00 ?, R2 = 4.00 ?, R3 = 10.0 ?, and R4 = 7.00 ? are combined as shown. What is the equivalent resistance for this combination?
a.
2.30 ?
b.
3.00 ?
c.
10.7 ?
d.
27.0 ?