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3 years ago

What happens when the temperature of the air cools?

Physics

1 answer:

SVETLANKA909090 [29]3 years ago

4 0

Answer:

Option B

Explanation:

Water rises into the atmosphere in the form of water vapor. Water vapor is a gas, which means that solid or liquid water must receive enough heat energy from the Sun to change into gas.

First, the water vapor condenses. Condensation is the change of water from gas form to liquid form. When water vapor in the atmosphere loses heat and cools down, condensation happens. As the water vapor cools down and condenses, it attaches to small particles of dust floating in the atmosphere, forming tiny liquid water droplets. These liquid water droplets are so small that they can float in the atmosphere. This is what forms clouds.When condensation occurs on the ground, it forms dew. You can see dew on grass early in the morning when temperatures are cool.

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Choose the 200 kg refrigerator. Set the applied force to 400 N (to the right). Be sure friction is turned off.What is the net fo

White raven [17]

So, there should be two forces acting on the refrigerator: the applied force and the friction force.

The question mentioned that the friction force was set to zero, so the only effective force now would be the applied force.

We have an applied force of 400 N to the right, this means that:
<span>The magnitude of the net force is 400, directed to the right.</span>

3 0

3 years ago

Read 2 more answers

Calculate the pressure on the bottom of a swimming pool 3. 5 m deep. How does the pressure compare with atmospheric pressure, 10

Nostrana [21]

Answer:

1.343 atm

Explanation:

The mass of water above 1 square meter of swimming pool bottom is ...

M = (3.5 m)·(1000 kg/m^3) = 3500 kg/m^2

Then the force exerted by the water on the pool bottom is ...

F = Mg = (3500 kg/m^2)(9.8 m/s^2) = 34300 N/m^2 = 34300 Pa

Compared with atmospheric pressure, this is ...

34,300/10^5 = 0.343 . . . . atmospheres

Added to the atmospheric pressure on the water's surface, the total pressure on the pool bottom is 1.343 atmospheres.

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4 years ago

A 52-kg snow skier is at the top of a 245-m-high hill. After she has gone down a vertical distance of 112 m, what is her total e

Assoli18 [71]

Answer:

a. 125 kJ

Explanation:

Her total energy is the same as the potential energy she had at the top of the hill:

PE = mgh

= (52 kg)(9.8 m/s^2)(245 m) = 124,852 J

≈ 125 kJ . . . . matches choice A

_____

After skiing down 112 m, some of her initial energy is converted to kinetic energy, and some remains as potential energy. We assume the ski slope is essentially frictionless, and air resistance is negligible.

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3 years ago

Xenon hexafluoride was one of the first noble gas compounds synthesized. The solid reacts rapidly with the silicon dioxide in gl

Oxana [17]

Answer:

0,93 atm

Explanation:

For this we will use PV = nRT

P is what we want to find

V = 1 L

n = $\frac{8.53}{223.23}$ = 0,038 moles

R = 0,082 $\frac{L atm}{K mole}$

T = 25°C = 298,15 K

P * 1 = 0,038 *0,082 * 298,15

P = 0,93 atm

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3 years ago

The pressure of liquid varies as per it's depth.

irga5000 [103]

Answer: The pressure in a liquid is different at different depths. Pressure increases as the depth increases. The pressure in a liquid is due to the weight of the column of water above. The greater pressure at the bottom would give a greater 'force per unit area' on the wall.

Explanation:

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3 years ago