At what distance from the central axis of a long straight thin wire carrying a current of 5.0
A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/A)
A) 1.0 cm
B) 2.0 cm
C) 3.0 cm
D) 4.0 cm
E) 5.0 cm
B
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Constant Angular Acceleration: A wheel starts from rest and has a uniform angular acceleration of 4.0 rad/s2. After the wheel completes its first revolution, how long does it take for it to make its second complete revolution?
Fill in the blank(s) with the appropriate word(s).
The spacecraft called Curiosity is
A) a rover on Mars. B) an orbiter studying Jupiter. C) a robotic lander on Venus. D) currently orbiting Saturn.
0.00325 × 10-8 cm equals
A) 3.25 × 10-12 mm B) 3.25 × 10-11 mm C) 3.25 × 10-10 mm D) 3.25 × 10-9 mm E) 3.25 × 10-8 mm
Water has an index of refraction of 1.333 . What is the speed of light through it? (c = 3.00 × 10^8 m/s)
a. 4.00 × 10^8 m/s b. 2.25 × 10^8 m/s c. 4.46 × 10^8 m/s d. 1.46 × 10^8 m/s