A long solenoid produces a field at its center. An identical solenoid is placed end to end with the first (common axis). The magnetic field at the center of the 1st solenoid is now
A) zero.
B) the same.
C) double.
D) four times the original magnitude.
E) half what it was.
B
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Using graphical methods, estimate the temperature distribution through the phenolic disk surrounding the silicon chip sketched in Figure 2-61. Then estimate the heat transfer per unit depth.
A carousel that is 5.00 m in radius has a pair of 600-Hz sirens mounted on posts at opposite ends of a diameter
The carousel rotates with an angular velocity of 0.800 rad/s. A stationary listener is located at a distance from the carousel. The speed of sound is 350 m/s. The maximum beat frequency of the sirens at the position of the listener is closest to A) 6 Hz. B) 8 Hz. C) 10 Hz. D) 12 Hz. E) 14 Hz.
To a fair approximation, Early Greeks knew the
A) size of Earth. B) size of the Moon. C) Earth-Moon distance. D) all of the above
When Mary is 3.00 m from the center of a merry-go-round, her tangential speed is a constant 1.88 m/s
(a) What is her angular speed in rad/s? (b) What is the magnitude of her linear acceleration? What will be an ideal response?