The wave speed in an aluminum wire with a radius of 1.00 mm is 120 m/s. What is the tension in the wire? The density of aluminum is 2.70 103 kg/m3.
A) 112 N
B) 100 N
C) 134 N
D) 427 N
E) 122 N
Question 2
You do 174 J of work while pulling your sister back on a swing, whose chain is 5.10 m long. You start with the swing hanging vertically and pull it until the chain makes an angle of 32.0 with the vertical with your sister is at rest.
What is your sister's mass, assuming negligible friction? A) 22.9 kg
B) 19.5 kg
C) 26.3 kg
D) 28.4 kg
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An aluminum wire has a length of 27.0 m and a resistance of 2.90 n at 20.00C. As