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egoroff_w [7]
3 years ago
7

Toddlers are extremely active, naturally curious, and very top heavy making them prone to falls. The disproportionately large he

ad and small legs common to 2-3 year-olds is due to which pattern of growth?
Physics
1 answer:
Serhud [2]3 years ago
6 0

Answer:

No

Explanation:

no

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3 years ago
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If the north pole of a magnet in a compass is attracted to Earth's geographic north, what must be the polarity of Earth's magnet
nikitadnepr [17]
B south because north polarities line up with the opposite polarities
8 0
3 years ago
What evidence supports the ages of our planets, moon, sun, and asteroids
Pie

It is indeed true that scientists have known about the background radiation (commonly known as the Cosmic Microwave Background) since the early 60s. It was first discovered quite by accident by Penzias and Wilson working at Bell Labs, who detected it as an unexplainable interference in their precision radio equipment. When people finally figured out exactly what it was they were seeing, they won the Nobel Prize for their discovery. Only a few years before, George Gamow had predicted that if the Big Bang theory were correct, we should observe just such a background radiation. The CMB is not the only evidence in favor of the Big Bang, but it is one of the most important. It is a natural consequence of the theory, and is pretty unexplainable in steady-state cosmology.

The 15-20 billion year number comes not from the CMB, but rather predominantly from measurements of nearby and distant galaxies, particularly their rates of expansion away from us. We find that the distance to a galaxy is proportional to its recessional velocity. The constant of proportionality is the Hubble Constant, H, which turns out to be (approximately) the reciprocal of the age of the universe. So we measure the age by measuring recessional velocities. T = 1/H is only true, however, if the universe is not significantly accelerating or decelerating its expansion rate. If the rate of expansion is rapidly accelerating, the universe may be older than 1/H = 15 billion years, give or take. Such an acceleration would be caused by a large value of the Cosmological Constant, a sort of anti-gravity force predicted by General Relativity. There is some evidence that this might be the case.

So finally, yes, the age of the universe, being based on the empirical determination of H, is based on the observed evidence.

6 0
3 years ago
Which statement identifies the chemical property of iron that results in the formation of rust?
Maru [420]

Answer:

B, It reacts with oxygen to form a new substance

Explanation:

B

4 0
2 years ago
If you double the wavelength, the electromagnetic radiation energy will double. The energy of the electromagnetic radiation will
Sedbober [7]

Answer:

It's energy will double.

Explanation:

This is because energy, E, is related to frequency, f, by:

E = hf

Where h = Planck's constant

So, double frequency will be 2f

=> E(2f) = 2hf = 2E.

Hence, energy is doubled.

7 0
3 years ago
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