Physics, 28.09.2019 16:30 Martinemaberry1944

Boiling requires
a. the removal of energy.
b. the absorption of energy.
c. no energy change.

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B.
Boiling water means you are heating it. Heat is defined as the average kinetic energy of a particle in a substance therefore you must give energy to the particles

Answer from: aramirez4785

Boiling requires the absorption of energy.

Explanation:

Energy is the ability of bodies to affect a job because of its constitution (internal energy), its position (potential energy) or its movement (kinetic energy).

On the other hand, boiling is the physical phenomenon produced when the temperature of a liquid rises sufficiently to cause the set of molecules of the liquid to raise its vapor tension to reach the external pressure. Then gas bubbles appear throughout their mass and they are released into the atmosphere.

The temperature of matter is linked to the kinetic energy of its molecules (energy associated with movement). In order for the boiling of a liquid to take place, the temperature needs to be increased, that is, it is necessary to increase the kinetic energy of its molecules. That is, to reach the boil, the molecules must break their bonds, stronger in the liquid state than in the gaseous state. For that, energy is required. Therefore, boiling requires the absorption of energy.

Answer from: Quest

pecialized keyboards

Answer from: Quest

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

$x(t)=ax(x-6)$

where $a$ is unknown. because the position is parabolic, there is symmetry about the midpoint at $t=3$ , and we know that

$x(3)=10\implies -9a=10\implies a=-\dfrac{10}9$

so that the position function is

$x(t)=-\dfrac{10}9x(x-6)$

which means the velocity is

$v(t)=\dfrac{\mathrm dx}{\mathrm dt}=-\dfrac{20}9x+\dfrac{60}9$

then the total distance traveled is

$\displaystyle\int_{t=0}^{t=6}|v(t)|\,\mathrm dt=\left\{\int_{t-0}^{t=3}-\int_{t=3}^{t=6}\right\}v(t)\,\mathrm dt=20$

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at $x=0$ and ends at $x=0$ , so its displacement is 0.

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Boiling requires
a. the removal of energy.
b. the absorption of energy.
c. no ener...