A 100-m long transmission cable is suspended between two towers. If the mass density is 2.01 kg/m and the tension in the cable is 3.00 × 104 N, what is the speed of transverse waves on the cable?
A. 60 m/s
B. 122 m/s
C. 244 m/s
D. 310 m/s
E. 1500 m/s
Answer: B
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A 35 mm camera using a standard 50.0 mm lens is focused on a 1.80 m tall person who is standing 3.25 m from the lens. You now refocus the camera on a 15.0 cm tall flower that is 75.0 cm from the lens
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Two people are lifting a 2.0-m wide, 80-kg, office desk by the ends. One side is heavier than the other, and it is found that the person exerting the larger force is exerting a vertical force of 500 N
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"GFI" stands for:
a. grand flux indicator. c. ground forcing indicator. b. gauss-free invention. d. ground fault interrupter.