The thermal energy of a block of ice at 0°C melting to a puddle of water at 0°C in a cup at room temperature
A. Increases.
B. Decreases.
C. Remains the same.
C. Remains the same.
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In an LC circuit with an inductance of 40 mH and capacitance of 1.2 mF, the maximum charge on the capacitor is 45 mC during the oscillations which occur. What is the maximum energy stored by the inductor during the oscillations?
A) 1.7 mJ B) 0.84 J C) 0.84 mJ D) 1.7 J E) 1.125 mJ
Polarization: For a beam of light, the direction of polarization is defined as
A. the beam's direction of travel. B. the direction of the electric field's vibration. C. the direction of the magnetic field's vibration. D. the direction that is perpendicular to both the electric and magnetic field vectors.
A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be
A) just as much. B) 10 times as much. C) 100 times as much. D) one-tenth as much. E) none of the above
Total Internal Reflection: A light beam with wavelength 440 nm in a certain material then enters air and its wavelength becomes 577 nm.(a) What is the index of refraction for the material?(b) At what angle with the plane of the surface will the light be totally reflected back into the material?
Fill in the blank(s) with the appropriate word(s).