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Agata [3.3K]
3 years ago
13

What is dark energy?​

Physics
2 answers:
ioda3 years ago
8 0

Answer:

D) Whatever is causing the accelerating expansion of the universe.

Explanation:

Scientists have come to believe that we live in an open universe with a poorly understood effect called Dark Energy, which causes the accelerated expansion of the Earth.

(If you are doing the multiple choice quiz, this is the answer.)

Tpy6a [65]3 years ago
7 0

Answer:

theoretical form of energy postulated to act in opposition to gravity

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The outside diameter of your teacher's rear bicycle tire is 16 inches. How far will he travel if the rear wheel makes 1200 revol
FinnZ [79.3K]

Answer:

241,274.32 inches

Explanation:

How far will he travel if the rear wheel makes 1200 revolutions on the road?

Since the rear wheel makes one revolution in the distance of a circumference of a circle, C with diameter, d = 16 inches

C = πd²/4

So, the distance, travelled in 1200 revolutions is D = 1200 × C = 1200πd²/4

Substituting d = 16 into D, we have

D = 1200πd²/4

D = 1200π(16)²/4

D = 76800π

D = 241,274.32 inches

3 0
3 years ago
Can you plz make me brainliast?
bekas [8.4K]

Answer:

I dont know what to answer so im just gonna say ok

8 0
3 years ago
What do we call the days when the sun is directly overhead the equator?
NikAS [45]

Answer:

Equinox

Explanation:

It is an astronomical phenomenon that is repeated twice a year, in summer and winter, and that is caused because the axis on which our planet rotates is slightly inclined with respect to the plane of translation, this is its trajectory around the Sun.

For this reason there are two equinoxes a year, a phenomenon completely opposite to the solstice, but also marks the beginning of the spring and autumn seasons.

The equinoxes occur around March 20 or 21 and September 22 or 23, and it is the days when the Sun is exactly over the equator, which makes day and night more or less the same duration. The word ‘equinox’ comes from Latin and means precisely ‘same night’. In those two moments the part of the Earth closest to the Sun is the equator.

8 0
3 years ago
You're standing in a large room when a loud noise is made and you hear a series of echoes. Which characteristi
MrMuchimi
The correct answer is Reverberation (C)
4 0
2 years ago
A standard electrical outlet has three wires connected to it: the hot, the neutral, and the ground. There is no potential differ
Over [174]

Answer:

The neutral wire and the ground wire.

Explanation:

The black wire is the hot wire

The neutral wire provides the return path for the current provided by the hot wire.

The ground wire is connected to any metal parts in an appliance for example microwave.

A standard electrical outlet has three wires connected to it: the hot, the neutral, and the ground. There is no potential difference between the neutral wire and the ground wire.

7 0
3 years ago
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