A square coil of wire with 15 turns and an area of 0.40 m2 is placed parallel to a magnetic field of 0.75 T. The coil is flipped so its plane is perpendicular to the magnetic field in 0.050 s
What is the magnitude of the average induced emf?
A)
6.0 V
B)
12 V
C)
36 V
D)
45 V
E)
90 V
E
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Drummers like to have high-pitched cymbals that vibrate at high frequencies. To obtain the highest frequencies, a cymbal of a fixed size should be made of a material
a. with a low Young's modulus and a low density. b. with a low Young's modulus and a high density. c. with a high Young's modulus and a low density. d. with a high Young's modulus and a high density. e. composed of a metal-plastic laminate.
The space time diagram in figure R2.12 shows the world lines of various objects. Which object has the largest speed at time t = 1 s?
A. A
B. B
C. C
D. D
E. E
Two stars have the same absolute magnitude, but one lies twice as far from Earth as the other. It will appear half as bright
Indicate whether the statement is true or false
An organ pipe open only at one end will have a displacement node at the ________ end.
Fill in the blank(s) with the appropriate word(s).