### What is the breaking strength

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##### Reference no: EM1314722

Q1. Calculate the energy associated with the magnetic field of a 191 turn solenoid in which a current of 2.44. A produces a magnetic flux of 3.74 x 10-4 T • m2 in each turn.

Q2. A string under a tension of 43.5N is used to whirl a rock in a horizontal circle of radius 2.25 m at a speed of 20.3 m/s on a frictionless surface. As the string is pulled in, the speed of the rock increases. When the string is 1.00m long and the speed of the rock is 49.0 m/s, string breaks. What is the breaking strength, in newtons, of the string?

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