A coil of 160 turns and area 0.20 m2 is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s
If the resistance of the coil is 16 ?, at what rate is power generated in the coil?
10.2 W
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NASA uses the famous "Vomit Comet," a KC-135 cargo plane, to provide astronauts and scientiest a simulated zero-gravity environment. The plane flies in a parabolic arc, at the top of which a passenger feels "weightless." This is because
A. the acceleration of the passenger is nearly zero at the top of the arc B. the gravitational force exerted by Earth on the passenger is nearly zero at the top of the arc C. the force exerted by the floor of the plane on the passenger is nearly zero at the top of the arc D. a and b
What evidence do we have that volcanism occurs on Io?
What will be an ideal response?
A light beam from a 2.1-mW He-Ne laser has a wavelength of 633 nm. How many photons does the laser emit in one second?
(h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s) A) 1.3 × 1016 B) 6.7 × 1015 C) 8.8 × 1015 D) 1.1 × 1016
When the energy state of an atom changes by ?E, the frequency of the photon emitted or absorbed is calculated by dividing ?E by ______________
Fill in the blank(s) with correct word