When a current of 2.0 A flows in the 100-turn primary of an ideal transformer, this causes 14 A to flow in the secondary. How many turns are in the secondary?
A) 14 B) 4 C) 114 D) 356 E) 700
A
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The type of lens that brings parallel light rays together is a
A) converging lens. B) diverging lens. C) combination of converging-diverging lens.
The type of radio galaxy that reveals its motion through the intergalactic medium is called a
A) Seyfert. B) head-tail. C) quasar. D) bipolar jet. E) dual lobe.
What force does the water exert (in addition to that due to atmospheric pressure) on a submarine window of radius 44.0 cm at a depth of 9,400 m in sea water? The density of sea water is 1025 kg/m3
A) 5.74 × 107 N B) 5.74 × 1011 N C) 2.87 × 1011 N D) 1.83 × 107 N E) 2.87 × 107 N
Particle A (mass = m, charge = Q) and B (mass = m, charge = 5 Q) are released from rest with the distance between them equal to 1.0 m. If Q = 12 ?C, what is the kinetic energy of particle B at the instant when the particles are 3.0 m apart?
a. 8.6 J b. 3.8 J c. 6.0 J d. 2.2 J e. 4.3 J