Snell's Law: A glass plate with an index of refraction is 1.57 is immersed in an oil having a refractive index of 1.40. The surface of the glass is inclined at an angle of 54° with the vertical. A horizontal light ray in the glass strikes the interface. What is the angle that the refracted ray, in the oil, makes with the horizontal?
A. 11°
B. 5.6°
C. 8.3°
D. 14°
E. 17°
Answer: A
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Mass on a Spring: A ball vibrates back and forth from the free end of an ideal spring having a force constant (spring constant) of 20 N/m. If the amplitude of this motion is 0.30 m, what is the kinetic energy of the ball when it is 0.30 m from its equilibrium position?
A. 0.00 J B. 0.22 J C. 0.45 J D. 0.90 J E. 1.4 J
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A ten loop coil of area 0.23 m2 is in a 0.047 T uniform magnetic field oriented so that the maximum flux goes through the coil. The coil is then rotated so that the flux through it goes to zero in 0.34 s
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An adiabatic process occurs when
A) no thermal energy enters or leaves the system. B) thermal energy leaving a system is greater than thermal energy entering a system. C) thermal energy leaving a system is less than thermal energy entering a system. D) none of these