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3 years ago

15

A 1.0 m length of metal wire is connected to a battery, and a current of flows through it. What is the diameter of the wire? The

resistivity of the metal is

1 answer:

Anuta_ua [19.1K]3 years ago

6 0

Nice ! This could be a dynomite exercise if we only knew the voltage of the battery, the current, and the resistivity.

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A man supports himself and the uniform horizontal beam pulling the rope with a force T.The weights of men and the beam are 883 N

artcher [175]

Answer:

T=502.5N

Ax=171.8N

Explanation:

The computation of the tension T in the rope and the forces exerted by the pin at A is shown below:

vertical forces sum = Ay + Tsin20 + T - 245 - 883 = 0

Now

horizontal forces sum = Ax - Tcos70

Now Moment about B

-Ay × 4.8 + 245 × 2.4 + 883 × 1.8=0

Ay=453.6N

Now substitute in sum of vertical forces T=502.5N

Ax=171.8N

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