The principle or law that says "an induced emf in a circuit loop produces a current whose magnetic field opposes further change of magnetic flux" is credited to:
a. Faraday.
b. Lenz.
c. Ampere.
d. Volta.
b
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What type of rocket engine is used by the Space Shuttle?
A) chemical rocket B) nuclear rocket C) matter-antimatter rocket D) ramjet E) beamed energy propulsion
A 1000-kg car is picking up speed as it goes around a horizontal curve whose radius is 100 m. The coefficient of static friction between the tires and the road is 0.350. At what speed will the car begin to skid sideways?
A) 9.25 m/s B) 23.6 m/s C) 34.3 m/s D) 35.0 m/s E) 18.5 m/s
Which of these is NOT typical of the Galaxy's spiral arms?
A) open clusters B) Population II giants like orange Arcturus C) emission nebulae like M42 D) hot, young blue Population I stars E) O and B stars
A particle (charge = +2.0 mC) moving in a region where only electric forces act on it has a kinetic energy of 5.0 J at point A. The particle subsequently passes through point B which has an electric potential of +1.5 kV relative to point A. Determine the kinetic energy of the particle as it moves through point B
a. 3.0 J b. 2.0 J c. 5.0 J d. 8.0 J e. 10.0 J