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Rainbow [258]
3 years ago
8

Stars, like our Sun, are massive luminous balls of plasma held together by their own gravity, while galaxies are made of billion

s of stars, like our Sun
True

False
Physics
1 answer:
Fudgin [204]3 years ago
5 0
Galaxies are comprised of groups of stars circling a common gravitational point (which is theorized in the Milky Ways case to be a black hole). The answer is True.
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What is the main energy source that causes changes in the atmosphere of Earth?
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6 0
3 years ago
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A partially discharged car battery can be modeled as a 9.0-V emf in series with an internal resistance of 0.18 Ω . Jumper cables
Bad White [126]

Answer:

The answer is <em>15A</em>

Explanation:

Terminal of like polarity are connected with jumpers of negligible resistance

Kirchoff's voltage law gives

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6 0
3 years ago
A 331 N stoplight is hanging in equilibrium from cables as shown. The tension in the right cable is 550 N, and it makes an angle
Ksju [112]
<u>The correct answer is 580.

</u>The upward force the right tension cord exerts on the traffic light is equal to about 114.35 N. Because the stoplight is being help upright the natural force (upward force) provided by both tension cords must be equal to the gravitational (downward) force of the traffic light which is 331.
If 114 is the upward force on the right side then 216 N must be the force provided by the left side.
You then have a right triangle with the length opposite theta = about 216 and theta = 22. So sin(22)* X = 216, where X is the length of the hypotenuse, or the force found in the left cord.
with sig figs added to the mix the answer is 580 N

I believe the answer is true to the E dgenuity physics course 


8 0
4 years ago
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