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3 years ago

Check the attached image for the question~

Physics

1 answer:

zheka24 [161]3 years ago

3 0

Answer:

put the full thin g

Explanation:

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A civil engineer wishes to redesign the curved roadway in the example What is the Maximum Speed of the Car? in such a way that a

vlabodo [156]

Answer:

24.3 degrees

Explanation:

A car traveling in circular motion at linear speed v = 12.8 m/s around a circle of radius r = 37 m is subjected to a centripetal acceleration:

$a_c = \frac{v^2}{r} = \frac{12.8^2}{37} = 4.43 m/s^2$

Let α be the banked angle, as α > 0, the outward centripetal acceleration vector is split into 2 components, 1 parallel and the other perpendicular to the road. The one that is parallel has a magnitude of 4.43cosα and is the one that would make the car slip.

Similarly, gravitational acceleration g is split into 2 component, one parallel and the other perpendicular to the road surface. The one that is parallel has a magnitude of gsinα and is the one that keeps the car from slipping outward.

So $gsin\alpha = 4.43cos\alpha$

$\frac{sin\alpha}{cos\alpha} = \frac{4.43}{g} = \frac{4.43}{9.81} = 0.451$

$tan\alpha = 0.451$

$\alpha = tan^{-1}0.451 = 0.424 rad = 0.424*180/\pi \approx 24.3^0$

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4 years ago

A change in position of an object is its:

finlep [7]

Answer:

it's B I think I did this the other day tbh sorry if it's wrong btw hope this helps

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3 years ago

Balance this chemical equation Fe(s) + 02(g) --- Fe0(s)

Softa [21]

2Fe(s) + O2 -> 2FeO(s)

<span>2 'Fe' atoms on both sides </span>
<span>2 'O' atoms on both sides</span>

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4 years ago

A lens focuses light at a single point called the focal point. What is responsible for the light rays coming together at the foc

sattari [20]

The answer is; refraction.

When waves, including light, pass through two media with different densities, the waves bend at the transition between the two media due to differences in speed and wavelength. Convex lenses bend (refract) light and concentrate it at one point called the focal point.

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4 years ago

Why is a silver spoon a good conductor

dangina [55]

Because it’s made of metal. And metal is a good conductor

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4 years ago

Read 2 more answers