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finlep [7]
3 years ago
8

고체와 액체 사이의 회색 영역에서는 어떤 일이 발생합니까?

Physics
2 answers:
Marianna [84]3 years ago
4 0

Answer:

From liquid to solid or to solid or liquid the transition has to cross the grey zone.

Explanation:

hope it helps<

cupoosta [38]3 years ago
4 0

\huge \tt \blue{Answer}

  • Solids and liquids are well understood. But some materials act like both a liquid and a solid, making their behaviour hard to predict. Sand is one example. A grain of sand is as solid as a rock, but a million grains can flow through a funnel almost like water. And highway traffic can behave in a similar way, flowing freely until it becomes blocked at some bottleneck.

  • So a better understanding of this “gray zone” might have important practical applications.

  • “People have been asking, under what conditions does the entire system jam up or clog?” says Dr. Kerstin Nordstrom, a physicist at Mount Holyoke College. “What are the crucial parameters to avoid clogging?” Weirdly, an obstruction in the flow of traffic can, under certain conditions, actually reduce traffic jams. “It’s very counter intuitive,” she says.

______________________________________

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Which of the following must be true about an object for it to be in uniform circular motion? A.It must have zero centripetal acc
Grace [21]

In the previous section, we defined circular motion. The simplest case of circular motion is uniform circular motion, where an object travels a circular path at a constant speed. Note that, unlike speed, the linear velocity of an object in circular motion is constantly changing because it is always changing direction. We know from kinematics that acceleration is a change in velocity, either in magnitude or in direction or both. Therefore, an object undergoing uniform circular motion is always accelerating, even though the magnitude of its velocity is constant.






                                        hope it helps

5 0
3 years ago
Read 2 more answers
What can make an inclined plane more efficient?
Sophie [7]

Answer:

Efficiency can be increase by using rollers in conjunction with the inclined plane. Wedge. The wedge is an adaptation of the inclined plane. It can be used to raise a heavy load over a short distance or to split a log

3 0
3 years ago
Explain what happens to the total mass of a mixture when it is separated?
SIZIF [17.4K]
The total mass of the mixture would not change.

Think about it as a mix of marbles. Suppose you have a group of 10 marbles. 5 marbles are red, and 5 marbles are blue. If you separate the marbles into 2 different groups by color, you still have 10 marbles in total, but they are separated and no longer a mixture of colors.
5 0
3 years ago
In positron-emission tomography (PET) used in medical research and diagnosis, compounds containing unstable nuclei that emit pos
arlik [135]

Answer:

Energy of gamma ray = 506250 eV

Explanation:

We are told that the mass of an electron or positron is 9 × 10-31 kg.

This means that their energies will be the same.

Thus; E_e = E_p

Now, since electron and positron annihilate to form gamma(γ) particle, then using work energy principle, we have;

E_γ + E_γ = E_e + E_p

Thus;

2E_γ = E_e + E_p

Since E_e = E_p, we now have;

2E_γ = 2E_e

Thus;

E_γ = E_e

Since all the energy of the electron is converted, then from Einstein's relativity theory, this implies that;

E_e = mc²

c is speed of light = 3 × 10^(8) m/s

And m is given as 9 × 10^(-31) kg

Thus;

E_e = 9 × 10^(-31) × (3 × 10^(8))^(2)

E_e = 810 × 10^(-16) J

Since E_γ = E_e

Thus;

E_γ = 810 × 10^(-16) J

We are given that; 1.6 × 10^(-19) J = 1eV

Thus; 810 × 10^(-16) J gives;

(810 × 10^(-16) × 1)/(1.6 × 10^(-19)) = 506250 eV

7 0
3 years ago
Two small balls, a and b, attract each other gravitationally with a force of magnitude
VLD [36.1K]
Hey
<span> 
the double of the mass and distance cancels each other out
</span>
Hoped I Helped

3 0
3 years ago
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