A rectangular conducting loop is placed near a long wire carrying a current I as shown in Figure OQ31.3. If I decreases in time, what can be said of the current induced in the loop?
1.The direction of the current depends on the size of the loop.
2.The current is clockwise.
3.The current is counterclockwise.
4.The current is zero.
5.Nothing can be said about the current in the loop without more information.
2
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A bucket of water with total mass 21.0 kg is attached to a rope, which in turn is wound around a 0.050-m radius cylinder, with crank, at the top of a well. The moment of inertia of the cylinder and crank is 0.21 kg m2 . The bucket is raised to the top of the well and released to fall back into the well. What is the kinetic energy of the cylinder and crank at the instant the bucket is moving with
a speed of 5.4 m/s? a. 4.8E+2 J b. 1.2E+3 J c. 3.1E+2 J d. 1.2E+4 J
In a double-slit experiment, it is observed that the distance between adjacent maxima on a remote screen is 1.0 cm. What happens to the distance between adjacent maxima when the slit separation is cut in half?
A) It increases to 2.0 cm. B) It increases to 4.0 cm. C) It decreases to 0.50 cm. D) It decreases to 0.25 cm. E) None of these choices are correct.
Find the wavelength of the photon emitted during the transition from the second EXCITED state to the ground state in a harmonic oscillator with a classical frequency of 3.72 × 1013 Hz
(c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s) A) 4.03 ?m B) 2.26 ?m C) 2.98 ?m D) 5.24 ?m
Neptune is an evening star, whereas Uranus is a morning star
Indicate whether the statement is true or false