A coil of 160 turns and area 0.20 m2 is placed with its axis parallel to a magnetic field of initial magnitude 0.40 T. The magnetic field changes uniformly from 0.40 T in the +x direction to 0.40 T in the -x direction in 2.0 s
If the resistance of the coil is 16 ?, at what rate is power generated in the coil?
A) 20 W B) 25 W C) 15 W D) 5.0 W E) 10 W
E
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a. sidereal period b. synodic period c. eclipse season d. saros cycle e. eclipse year
Spherical Mirrors: An object is placed 50 cm in front of a concave mirror with a focal length of 25 cm. What is the magnification produced by the mirror?
A. -0.50 B. -1.0 C. +1.5 D. -2.0 E. +1.0
Dielectrics: A 15-?F capacitor is connected to a 50-V battery and becomes fully charged. The battery is removed and a slab of dielectric, having a dielectric constant of 5.0, is inserted between the plates and completely fills the space between them.(a) What is the capacitance of the capacitor after the slab is inserted?(b) What is the potential difference across the capacitor with the dielectric inserted.
Fill in the blank(s) with the appropriate word(s).
A pane of red glass transmits primarily
A) red light. B) the complementary color of red light. C) all colors of light.