p201f01-exam04

# p201f01-exam04 - Seat Physics P201 D Baxter/R Heinz FINAL...

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1. A simple pendulum has a period of 2.0 s. What is the pendulum length? ( 9.8 g = m/s 2 ) a. 0.22 m b. 0.36 m c. 0.57 m d. 0.78 m e. 0.99 m 2. A hockey puck moving at 7.0 m/s coasts to a halt in 75 m on a smooth (but not frictionless) ice surface. What is the coefficient of kinetic friction between the ice and the puck? a. μ k = 0.013 b. μ k = 0.018 c. μ k = 0.025 d. μ k = 0.033 e. μ k =0 .11 3. A sinusoidal wave travels on a string and is described by 11 ( , ) 2cm sin(4cm 12s ) yxt x t -- =⋅ - . This wave has a velocity of a. 1 cm/s b. 2 cm/s c. 3 cm/s d. 4 cm/s e. 8 cm/s 4. If the tension in a guitar string is tripled the ratio of its new fundamental frequency to its original fundamental frequency will be: a. 0.84 b. 1.0 c. 1.7 d. 4.2 e. 9.0
5.

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p201f01-exam04 - Seat Physics P201 D Baxter/R Heinz FINAL...

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