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zmey [24]
3 years ago
10

Two banked curves have the same radius. Curve A is banked at 12.7 °, and curve B is banked at an angle of 15.1°. A car can trave

l around curve A without relying on friction at a speed of 19.1 m/s. At what speed can this car travel around curve B without relying on friction?
Physics
1 answer:
Elina [12.6K]3 years ago
6 0

Answer:

20.88 m/s

Explanation:

Curve A:

theta = 12.7, vA = 19.1 m/s

Curve B:

Theta = 15.1 degree

Let the speed is v.

By the use of given formula

tanθ = v^2 / rg

For Curve A

tan 12.7 = (19.1)^2 / r g   ...... (1)

For Curve B

tan 15.1 = v^2 / r g       ......(2)

Divide equation (2) by equation (1), we get

tan 15.1 / tan 12.7  = v^2 / (19.1)^2

0.269 / 0.225 = v^2 / 364.81

v = 20.88 m/s

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Answer:

1) Mass that needs to be converted at 100% efficiency is 0.3504 kg

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Explanation:

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Now the energy produced by the reactor in 1 year equals

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Part 2)

At 30% efficiency the mass converted equals

mass|_{30}=\frac{mass|_{100}}{0.3}\\\\mass|_{30}=\frac{0.3504}{0.3}\\\\mass|_{30}=1.168kg

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4 years ago
The risk of earthquakes is high along the Pacific coast of the United States because a. There have been no earthquakes there lat
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A charge of 1.0 × 10-6 μC is located inside a sphere, 1.25 cm from its center. What is the electric flux through the sphere due
Korvikt [17]

Answer:

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This is identical to the electric flux of a point charge located in the center of the sphere.

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4 years ago
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