The transit method of planet detection works best for
A) big planets in face-on orbits around small stars.
B) big planets in edge-on orbits around small stars.
C) Earth-like planets in any orbit.
D) small planets in face-on orbits around big stars.
E) small planets in edge-on orbits around big stars.
B
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A conducting rod (length = 2.0 m) spins at a constant rate of 2.0 revolutions per second about an axis that is perpendicular to the rod and through its center. A uniform magnetic field (magnitude = 8.0 mT) is directed perpendicularly to the plane of rotation. What is the magnitude of the potential difference between the center of the rod and either of its ends?
a. 16 mV b. 50 mV c. 8.0 mV d. 0.10 mV e. 100 mV
An AC generator consists of 6 turns of wire. Each turn has an area of 0.040 m2 . The loop rotates in a uniform field (B = 0.20 T) at a constant frequency of 50 Hz. What is the maximum induced emf?
a. 13 V b. 2.4 V c. 3.0 V d. 15 V e. 4.8 V
The number of electrons in a hydrogen atom is ______________
Fill in the blank(s) with correct word
What type of particle accelerator has two large D-shaped electrodes with a small gap between them, through which an alternating potential difference accelerates the particles in a constant magnetic field?
A) linear accelerator B) synchrotron C) cyclotron D) None of the above