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Oksana_A [137]
3 years ago
12

The star nearest to our Sun is called Proxima Centauri. It has a surface temperature of approximately 3000 Kelvin and a luminosi

ty about 1/1000th of the Sun’s. Which type of star is Proxima Centauri, and what color is it?
Physics
2 answers:
Mamont248 [21]3 years ago
4 0

Answer:

Proxima Centauri is a main sequence star, and it is red.

Explanation:

rusak2 [61]3 years ago
3 0

Ummmm is there any options?

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To test the performance of its tires, a car
velikii [3]

<u>Answer</u>:

The coefficient of  static friction between the tires and the road is 1.987

<u>Explanation</u>:

<u>Given</u>:

Radius of the track, r =  516 m

Tangential Acceleration a_r=  3.89 m/s^2

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<u>To Find:</u>

The coefficient of  static friction between the tires and the road = ?

<u>Solution</u>:

The radial Acceleration is given by,

a_{R = \frac{v^2}{r}

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a_{R = \frac{(1075.84)}{516}

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=>= \sqrt{ (a_r)^2+(a_R)^2}

=>\sqrt{ (3.89 )^2+( 2.085)^2}

=>\sqrt{ (15.1321)+(4.347)^2}

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The frictional force on the car will be f = ma------------(1)

And the force due to gravity is W = mg--------------------(2)

Now the coefficient of  static friction is

\mu =\frac{f}{W}

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\mu =\frac{ma}{mg}

\mu =\frac{a}{g}

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\mu =\frac{19.4791}{9.8}

\mu =1.987

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5 0
3 years ago
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