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murzikaleks [220]
3 years ago
5

Which statement BEST explains why the specific heat of water is higher than the specific heat of most other substances? A) Due t

o its polarity and hydrogen bonding water can absorb heat without a significant temperature change. B) Due to the ionic bonding in liquid water, it takes more heat energy to reach boiling. C) Because water is a covalent compound, it takes a lot of energy to change its kinetic energy. D) Water has a higher density value than most substances and requires more energy to change the temperature.
Physics
1 answer:
Pavel [41]3 years ago
4 0
The answer is A because the hydrogen bonds are the most important factors in specifc heat of water

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Which of the following is not an example of a molecule? A.H2O2 B.NCl3 C.F D.O3
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What does physical mean?
kirill [66]

Answer:

relating to the body as opposed to the mind.

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Compared to the cells in a healthy body, Elisa’s cells are getting far fewer ____________________ molecules.
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Answer:

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Explanation:

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3 years ago
I NEED HELP ASAP!!!!!
Ratling [72]

Answer:

D) momentum of cannon + momentum of projectile= 0

Explanation:

The law of conservation of momentum states that the total momentum of an isolated system is constant.

In this case, the system cannon+projectile can be considered as isolated, because no external forces act on it (in fact, the surface is frictionless, so there is no friction acting on the cannon). Therefore, the total momentum of the two objects (cannon+projectile) must be equal before and after the firing:

p_i = p_f

But the initial momentum is zero, because at the beginning both the cannon and the projectile are at rest:

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6 0
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Listed following is a set of statements describing individual stars or characteristics of stars. Match these to the appropriate
Oksana_A [137]

Answer:

Red giant or super giant → very cool but very luminous

                                      → found in the upper right of the H-R diagram.

Main sequence →The majority of stars in our galaxy

                        → Sun, for example

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White dwarfs → very hot but very dim

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Explanation:

Giant:

When the stars run out of their fuel that is hydrogen for the nuclear fusion reactions then they convert into Giant stars.That's why they are very cool. Giant stars have the larger radius and luminosity then the main sequence stars.

Main Sequence:

Stars are called main sequence stars when their core temperature reaches up to 10 million kelvin and their start the nuclear fusion reactions of hydrogen into helium in the core of the star. That is why they are very hot and luminous. For example sun is known as to be in the stage of main sequence as the nuclear fusion reactions are happening in its core.

White dwarfs:

When the stars run out of their fuel then they shed the outer layer planetary nebula, the remaining core part that left behind is called as white dwarf. It's the most dense part as the most of the mass is concentrated in this part.

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