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Makovka662 [10]
2 years ago
11

During a NASCAR race a car goes 58 m/s around a curved section of track that has a radius of 260 m. What is the car's accelerati

on?
Physics
1 answer:
Alex777 [14]2 years ago
6 0

Answer:

12.9m/s^2

Explanation:

As, a=(v^2)/r

=(58^3)/260

=12.9

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A wire 1 mm in diameter is connected to one end of a wire of the same material 2 mm in diameter of twice the length. A voltage s
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Answer:

T = 2 T₀

Explanation:

To answer this question let's write the expression for electrical conductivity

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We see that there is no explicit relationship between time and resistance, there is only a dependence on the life time (τ) that depends on the properties of the material, not on its diameter or length.

As also the average velocity or electron velocity of electrons is constant, the time to cross 2 mm in length is twice as long as the time to cross a mm in length

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