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Pavlova-9 [17]
3 years ago
12

Astronomical observatories have been available since ancient times, and many cultures set aside special sites for astronomical o

bservations. The thing modern observatories have that was missing from these older observatories until about 1610 was __________________. Group of answer choices
Physics
1 answer:
Vlada [557]3 years ago
8 0

Answer:

The answer is "telescopes".

Explanation:

Throughout ancient times, astronomical observatories have indeed been available, and so many historical locations were reserved for astronomical observations. All contemporary astronomers lacked within those older telescopes were lenses until 1610. A telescope is indeed an instrument used to view far-off objects. Telescopes often are being used to look at planets and stars.

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Which is an organic compound
DedPeter [7]

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3 0
3 years ago
1.What is a medulla? What do forensic scientists use this for?
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A medulla is a group of cells that are going through hair, forensic scientist use it to find out the pigment, (color), and the shape.

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3 years ago
Using evidence from the article, defend the concept that Earth’s magnetic poles have swapped places over time.
Mamont248 [21]

Answer: Scientists found evidence of Earths magnetic field reversal in rocks on the ocean floor at plate boundaries. These rocks have alternating polarity due to magnetization that occurred during their cooling period. Using radio metric dating, scientist estimate that reversals occur approximately every several hundred thousand years.

Explanation:

6 0
3 years ago
A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm water (16°C) at the oc
LenaWriter [7]

Answer:

3.46 %

Explanation:

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And the warm temperature of water that is T_h=16^{\circ}C=16+273=289\ K

The maximum possible efficiency is given by \eta =1-\frac{T_c}{T_h}

So maximum efficiency \eta =1-\frac{T_c}{T_h}=1-\frac{279}{289}=0.0346=3.46 %

6 0
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A light woman and a heavy man jump from an airplane at the same time and open their same-size parachutes at the same time. which
Airida [17]
The heavy man will fall faster, because he has more mass and heavy things fall faster than light things
6 0
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Read 2 more answers
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