The radius of Earth is
A. larger at the equator.
B. the same everywhere.
C. not known.
D. larger at the poles.
Answer: A
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My electric razor operates on 120. v and requires 3.0 Amperes. How much current comes out after delivering 360. watts of power?
A) 40. A B) 0. A C) 3.0 A D) 1.2 A E) 2.4 A
Many objects classified as irregular galaxies are actually galactic mergers.
Answer the following statement true (T) or false (F)
A solenoid 4.0 cm in radius and 4.0 m in length has 8 000 uniformly spaced turns and carries a current of 5.0 A. Consider a plane circular surface (radius = 2.0 cm) located at the center of the solenoid with its axis coincident with the axis of the solenoid. What is the magnetic flux through this surface? (1 Wb = 1 T ? m2)
a. 63 ?Wb b. 16 ?Wb c. 0.25 mWb d. 10 ?Wb e. 5.0 ?Wb
A star on the ____________________ generates enough energy from nuclear fusion to halt gravitational collapse
Fill in the blank(s) with correct word