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3 years ago

What must happen for liquid water to become water vapor?

Physics

2 answers:

motikmotik3 years ago

8 0

The water molecules must gain kinetic energy in order to become water vapour

il63 [147K]3 years ago

6 0

Answer:

<h2>C. The water molecules must gain kinetic energy.</h2>

Explanation:

When liquid water become water vapor, molecules move more, because they force between them is less strong. Notice that vapor water as lower consistency, it's like smoke where molecules can way anywhere, at this stage the force between molecules is not strong enough to maintain a ridig shape.

Now, at vapor stage, molecues have to gain more kinetic energy, because the least is the force between molecules, the more kinetic energy is gonna there.

Therefore, the right answer is C.

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An electric field of 790,000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of

matrenka [14]

Answer:

-2370000 N force acts on the charge particle

Explanation:

We have given electric field E = 790000 N/C

Charge $q=-3\mu C=-3\times 10^{-6}C$

We know that force on any charge particle due to electric field is given by

$F=qE$ , here q ia charge and E is electric field

So force $F=-3\times 10^{-6}\times 790000=-2370000N$

So -2370000 N force acts on the charge particle

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3 years ago

According to car and driver, an alfa romeo going 70 mph requires 177 feet to stop. assuming that the stopping distance is propor

nadezda [96]

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3 years ago

A proton is 0.9 meters away from a 1.4 C charge. What is the magnitude of the electric force between the proton and the charge

Digiron [165]

Answer:

F = 2.49 x 10⁻⁹ N

Explanation:

The electrostatic force between two charged bodies is given by Colomb's Law:

$F = \frac{kq_1q_2}{r^2}\\$

where,

F = Electrostatic Force = ?

k = colomb's constant = 9 x 10⁹ N.m²/C²

q₁ = charge on proton = 1.6 x 10⁻¹⁹ C

q₂ = second charge = 1.4 C

r = distace between charges = 0.9 m

Therefore,

$F = \frac{(9\ x\ 10^9\ N.m^2/C^2)(1.6\ x\ 10^{-19}\ C)(1.4\ C)}{(0.9\ m)^2}$

8 0

3 years ago

Read 2 more answers

The centripetal force acting on a moon in a circular orbit around a planet continuously changes the _____ of the moon's motion.

boyakko [2]

Direction because if you're moving in a circle the direction is constantly changing

5 0

4 years ago

John owns a used 2003 mustang Mach 1, he spots a news crew with a bunch of people what should he do? A) Rev his engine at the hi

Marta_Voda [28]

Each of the three choices is tasteless, exhibitionist, juvenile, and dangerous. John should do none of them.

Encountering a news crew, there's no reason for John to call attention to himself in a childish way, or interfere with their work in <em>any</em> way.

What he <u><em>should</em></u> do is:

==> Slow down

==> Pass the scene cautiously

==> Resume his normal, legal speed quietly, in case the crew happens to be recording audio at the moment.

Mysteriously, this course of action is nowhere to be found among the choices listed.

5 0

3 years ago