For a capacitor in and ac circuit, how much energy is stored in the capacitor at the instant when current is zero?
A. 0.707 maximum
B. half
C. zero
D. maximum
D. maximum
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Which spectral type represents stars with the hottest surface temperatures?
A) G B) M C) O D) A E) B
A rocket ship is 87.0 m in length when measured before leaving the launching pad. What would its velocity be if a ground observer measured its length as 62.0 m while it is in flight? (c = 3.00 × 10^8 m/s)
a. 1.61 × 10^8 m/s b. 2.14 × 10^8 m/s c. 1.48 × 10^8 m/s d. 2.10 × 10^8 m/s e. 1.91 × 10^8 m/s
A long cylindrical wire (radius = 2.0 cm) carries a current of 40 A that is uniformly distributed over a cross section of the wire. What is the magnitude of the magnetic field at a point which is 1.5 cm from the axis of the wire?
a. 0.53 mT b. 28 mT c. 0.30 mT d. 40 mT e. 1.9 mT
What type of faulting results from expansive stresses?
a. Reverse b. Normal c. Strike-slip d. Abnormal