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2 years ago

Which proportion can you use to find the value of a? (posted in this category because of bots)

Physics

1 answer:

pantera1 [17]2 years ago

5 0

Answer:

But you a BjTCH

Explanation:

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Convert 4 radians to degrees A. 242.6° B. 9.6° C. 229.2° D. 6.8°

muminat

The central angle of a circle is 360° or 2π radians.

Therefore
1 radian = (360 degrees)/(2π radians) = 180/π degrees/radian.
4 radians = (4 radians)*(180/π degrees/radian) = 229.18 degrees.

Answer: C. 229.2°

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2 years ago

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How much refrigerant must a system contain

Scrat [10]

About 10% to 15% of system charge

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3 years ago

The star Rho1 Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. A planet has been detected in a

s344n2d4d5 [400]

Answer:

82780.42123 m/s

14.45 days

Explanation:

m = Mass of the planet

M = Mass of the star = $0.85\times 1.989\times 10^{30}\ kg=1.69065\times 10^{30}\ kg$

r = Radius of orbit of planet = $0.11\times 149.6\times 10^{9}\ m=16.456\times 10^{9}\ m$

v = Orbital speed

The kinetic and potential energy balance is given by

$\frac{GMm}{r^2}=\frac{mv^2}{r}\\\Rightarrow v=\sqrt{\dfrac{Gm}{r}}\\\Rightarrow v=\sqrt{\dfrac{6.67\times 10^{-11}\times 1.69065\times 10^{30}}{16.456\times 10^{9}}}\\\Rightarrow v=82780.42123\ m/s$

The orbital speed of the star is 82780.42123 m/s

The orbital period is given by

$t=\frac{2\pi r}{v}\\\Rightarrow t=\dfrac{2\pi \times 16.456\times 10^{9}}{82780.42123}\\\Rightarrow t=1249040.48419\ seconds=\dfrac{1249040.48419}{24\times 60\times 60}=14.45\ days$

The orbital period is 14.45 days

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2 years ago

The cheetah speeds averages 70 meters per second how far does it travel 5 seconds

Gala2k [10]

Well let's see 70*5=350 do the cheetah travels 350 meters in 5 secconds

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2 years ago

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Products and reactants contain the same _____ but in different combinations

Drupady [299]

Products and reactants contain the same atoms, but the atoms are in different combinations. Since the atoms are moved to other places in the reaction, a new chemical product is generally produced.

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2 years ago