What resistance must be put in series with a 30-mH inductor at 4000 Hz to have a total impedance of 8.0 × 104 ??
A) 30 × 104 ?
B) 5.0 × 104 ?
C) 6.0 × 104 ?
D) 7.0 × 104 ?
E) 8.0 × 104 ?
E
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Tycho Brahe's contribution to astronomy included:
a. Tycho Brahe's contribution to astronomy included: b. inventing the telescope. c. proving that Earth orbits the Sun. d. collecting data that enabled Kepler to discover the laws of planetary motion.
What phase does the Moon experience 14 days after the time of a solar eclipse?
A) third quarter B) waxing gibbous C) new D) waning gibbous E) full
The study of energy levels in atoms is called
A) special relativity. B) general relativity. C) quantum mechanics. D) classical mechanics. E) particle physics.
A child is trying to throw a ball over a fence. She gives the ball an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground and the fence is 2.00 m high
The ball just clears the fence while still traveling upwards. How far is the child from the fence? A) 0.732 m B) 1.58 m C) 2.69 m D) 3.81 m E) 7.46 m