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IrinaVladis [17]
3 years ago
7

The length of a certain wire is kept same while its radius is doubled. What is the new resistance of this wire

Physics
1 answer:
Amiraneli [1.4K]3 years ago
8 0

Answer:

R = K L / A        resistance proportional to length and inversely proportional  

to area

R2 / R1 = A1 / A2 = A1 /  (4 A1) = 1 / 4

R2 = R1! / 4

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The correct answer is B) Giving Congress the power to create courts

Explanation:

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4 0
3 years ago
A gun with a muzzle velocity of 100 m/s is fired horizontally from a tower. Neglecting air resistance, how far downrange will th
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Answer:

313.6 m downward

Explanation:

The distance covered by the bullet along the vertical direction can be calculated by using the equation of motion of a projectile along the y-axis.

In fact, we have:

y(t) = h +u_y t + \frac{1}{2}at^2

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y(t)-h= \frac{1}{2}(-9.8)(8)^2 = -313.6 m

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6 0
3 years ago
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3 years ago
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