If r = kl/d2 find l to the nearest tenth foot if r= 2.5 ohms, k = 10.8 and = 85 mil

The electrical resistance r of a wire varies directly proportional to its length L and inversely as the square of its diameter d:

r = K * L / d^2

Looking for L, we rearrange the equation:

L = r * d^2 / K

L = 2.5 * (85)^2 / 10.8

L = 1672.45 mil

1 foot is equivalent to 12,000 mil, therefore converting the unit:

L = 1672.45 mil * (1 foot / 12000 mil)

L = 0.14 foot = 0.1 foot

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

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