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kobusy [5.1K]
3 years ago
8

8. Humans need oxygen to break down food in order to provide energy for cells. The oxygen needed for this process is delivered b

y an organ system called the A. respiratory system. B. lungs. C. digestive system. D. alveolus.
Physics
2 answers:
Marina86 [1]3 years ago
7 0

Answer:

The answer is B. Lungs

Aleonysh [2.5K]3 years ago
7 0

Answer: B

Explanation: we use lungs to breathe, so we take oxygen by lungs.  

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Find the momentum of a 25kg object traveling at a speed of 4m/s
solong [7]

Answer:

100Kg.m/s

Explanation:

From the question, we obtained the following information:

M= Mass = 25kg

V = Velocity = 4m/s

Momentum =?

Momentum = MV = 25x4= 100Kg.m/s

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3 years ago
The graph shows the heating curve of water the X axis shows heat added overtime and Y axis shows the temperature identify the re
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liquid, solid, and gas. A heating curve shows how the temperature changes as a substance is heated up at a constant rate.

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2 years ago
According to x-ray observations, the space between galaxies in a galaxy cluster is?
crimeas [40]

According to x-ray observations, the space between galaxies in a galaxy cluster is very hot. It is because the matter between galaxies (often called the intergalactic medium) is mostly hot, ionized hydrogen with bits of heavier elements such as carbon, oxygen and silicon thrown in.

Massive structures are collapsing than at earlier times. Large collapsing structures lead to higher velocity intergalactic shocks and, as a result, significant intergalactic shock heating, with some gas heated well above the 10^{4} K temperatures.

Heating also occurs as galaxies expel out most of the gas that fell into them. The final product is a warm/hot phase, with temperatures of > 10^{5} K.

Now, Let's know how do you use X-rays to make space observations?

X-radiation is absorbed by the Earth's atmosphere, so instruments to detect X-rays must be taken to high altitude by balloons, sounding rockets, and satellites.

To learn more about Galaxy Cluster, here

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6 0
1 year ago
A raging bull of mass 700 kg runs at 36 km/h .How much kinetic energy does it have ?
Ipatiy [6.2K]

Answer:

Use equation for kinetic energy: Ek=mV²/2

m=700 kg

V=10m/s

Ek=700kg*100m²7s²/2

Ek=35000 J=35kJ

Explanation:

Hope this helps you

Do mark me as brainliest

5 0
3 years ago
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When you ask you friend for hoemwork answers and he answers like a year later hahahah
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G that’s a nice friend
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3 years ago
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