When 5.0 A at 110 V flows in the primary of an ideal transformer, how many amps at 24 V can flow in the secondary?
A) 5.0 A B) 1.1 A C) 23 A D) 4.6 A
C
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The purpose of prescription glasses for a near-sighted person is to bring the apparent positions of distant objects
A. to the far point of the eye. B. to the near point of the eye. C. to the retina of the eye. D. none of the above.
A 25. meter long wire, of diameter 0.30 mm, connected to 3.00 volts draws 0.499 A
(a) What is the resistance of the wire? (b) What is its resistivity? (c) What is its conductivity?
The inductive reactance of a 20-mH inductor at a certain frequency is 120 ?. What is the frequency in rad/s?
A) 2000 rad/s B) 4000 rad/s C) 5000 rad/s D) 6000 rad/s E) 7000 rad/s
A spring (k = 600 N/m) is placed in a vertical position with its lower end supported by a horizontal surface. The upper end is depressed 20 cm, and a 4.0-kg block is placed on top of the depressed spring. The system is then released from rest. How far above the point of release will the block rise?
a. 46 cm b. 36 cm c. 41 cm d. 31 cm e. 20 cm