If the rotation rate of a generator coil is doubled, what happens to the peak emf?
A. it stays the same
B. it doubles
C. it quadruples
D. it halves
E. it quarters
B. it doubles
You might also like to view...
One way that future space stations may create artificial gravity is by rotating the station. Consider a cylindrical space station 380 m in diameter that is rotating about its longitudinal axis
Astronauts walk on the inside surface of the space station. How long will it take for each rotation of the cylinder if it is to provide "normal" gravity for the astronauts? A) 6.2 s B) 28 s C) 4.4 s D) 39 s
Kinetic energy is conserved in
a. an inelastic collision b. an elastic collision c. any collision where two objects rebound off each other d. none of the above
What is the frequency of the wave?
A. 80 Hz
B. 50 Hz
C. 120 Hz
D. 140 Hz
E. 160 Hz
What is the reason for the seasons on Earth?
a) Earth is cloest to the Sun in July, farthest from the Sun in January b) Earth is tilted with respect to the Sun by about 23.5 degrees c) Earth orbits the Sun more slowly in winter, faster in summer d) Earth rotates more slowly in winter, faster in summer e) Earth's Moon blocks more sunlight from reaching Earth in winter than in summer