The rotation of the Sun's photosphere is
a. fastest at the equator, slower at mid-latitudes, and slowest near the poles.
b. slowest at the equator, faster at mid-latitudes, and fastest near the poles.
c. fastest at the equator, slowest at mid-latitudes and the poles which travel at the same speed.
d. the same regardless of latitude.
a
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Charge of uniform linear density (4.0 nC/m) is distributed along the entire x axis. Determine the magnitude of the electric field on the y axis at y = 2.5 m
a. 36 N/C b. 29 N/C c. 43 N/C d. 50 N/C e. 58 N/C
The exchange of mediating photons can produce:
a. neither a repulsive nor an attractive force. b. either a repulsive or an attractive force. c. a repulsive force. d. an attractive force.
How do astronomers calculate a telescope's light collecting area (A)? (where r = radius of the telescope's mirror or lens)
A. A = ?r2 B. A = 2?r C. A = 4/3 ?r3 D. A = 4?r2
Which process does not transfer heat energy between objects?
A. Radiation B. Convection C. Conduction D. Reflection