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mario62 [17]
3 years ago
12

Ice that formed thousands of years ago is often found to contain tiny bubbles of gas. this gas came from __________. ice that fo

rmed thousands of years ago is often found to contain tiny bubbles of gas. this gas came from __________. the atmosphere tiny zooplankton that lived in the water before it froze water vapor released from melting ice tiny phytoplankton that lived in the water before it froze
Physics
1 answer:
motikmotik3 years ago
8 0
Atmosphere

Atmospheric gas from prehistoric eras is found trapped in glaciers in the form of bubbles. These gas bubbles are the basis of studying ice cores as they provide us with accurate estimates of the conditions of past climates. The bubbles allow us to determine the composition of atmospheric air, such as the carbon dioxide and methane concentrations, as well as allow us to determine air temperatures in the past.
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A bullet is fired at an angle θ above the horizontal with an initial velocity of 800 m/s from the top of an 80 m high tower. Wha
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Answer:

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A bar magnet is held above the center of a conducting ring in the horizontal plane. The magnet is dropped so it falls lengthwise
Alenkinab [10]

Explanation:

Since, it is given that the magnet drops and falls lengthwise towards the canter of the ring. As a result, change in magnetic flux will occur which tends to induce an electric current in the ring.

Therefore, a magnetic field is also produced by the ring itself which will actually oppose or repel the magnet.  

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7 0
3 years ago
If anyone anwers this question, i will give you 100 points and brainliest!
Tju [1.3M]

Answer:

33. at the top?

34. to add more "energy" to the water and keep it moving

35. the dam because the energy is is building up

Explanation:

i tink that's correct sorry if not

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3 0
2 years ago
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A starship travels to a planet that is 20 light years away. The astronauts stay on the planet for 2.0 years before returning at
ad-work [718]

Answer:

astronauts age is 32 years

correct option is e 32 years

Explanation:

given data

travels = 20 light year

stay = 2 year

return = 52 years

to find out

astronauts aged

solution

we know here they stay 2 year so time taken in traveling is

time in traveling = ( 52 -2 )  = 50 year

so it mean 25 year in going and 25 years in return

and distance is given 20 light year

so speed will be

speed = distance / time

speed = 20 / 25 = 0.8 light year

so time is

time = \frac{t}{\sqrt{1-v^2} }

time =  \frac{25}{\sqrt{1-0.8^2} }

time = 15 year

so age is 15 + 2 + 15

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3 years ago
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