A mass of 375 g hangs from a string that is wrapped around the circumference of a pulley with a moment of inertia of 0.0125 kg?m2 and a radius of 26.0 cm
When the mass is released, the mass accelerates downward and the pulley rotates about its axis as the string unwinds. What is the tension in the string? A) 1.21 N
B) 2.45 N
C) 3.68 N
D) 1.84 N
E) 0.605 N
A
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What is the maximum velocity of a photoelectron emitted from a surface with work function 3.5 eV when illuminated by 289 nm ultraviolet light? (melectron = 9.11 × 10^?31 kg, h = 6.63 × 10^?34 J?s, 1 eV = 1.60 × 10^?19 J, and 1 nm = 10?9 m)
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A. 9.5 dB B. 4.8 dB C. 6.0 dB D. 3.0 dB E. 12 dB
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