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makvit [3.9K]
4 years ago
7

How do stars serve as evidence for the expansion of the universe and the Big Bang theory?​

Physics
1 answer:
castortr0y [4]4 years ago
7 0

Answer:

The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.

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determine which will change if you turn up a radio’s volume: wave velocity, intensity, pitch, frequency, wavelength, loudness.
Mamont248 [21]
I think wavelength because the radios volume is being turned up.

5 0
3 years ago
Sirius and its companion orbit around a common center of mass with a period of 50 years. The mass of Sirius is 2.35 times the ma
s2008m [1.1K]

Answer:

1 solar masses

Explanation:

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-Let x be the mass of Sirius and y be the mass of it's companion.

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\frac{x}{y}=2.35\\\\\frac{x}{y}=\frac{2.35}{1}

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3 years ago
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melamori03 [73]
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4 years ago
How do i exist (serious question, i'm in the dark abyss of nothing please help)
Reptile [31]
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3 0
2 years ago
Calculate the angular velocity of a clocks second hand, its minute hand, and its hour hand. State in Rad/s. What is its angular
fenix001 [56]

Second hand:

1 rev per minute = (2π radians/minute) x (1 min/60sec) = π/30 rad/sec

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As long as the clock is in good working order, and the hands are turning steadily at their normal rate, there is no angular acceleration.

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3 years ago
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