PHYSICS HIGH SCHOOL

*Brainliest if answered with in 5 min*At which temperature does the motion of atoms and molecules stop?

A. 0°C
B. 0 C
C. 0°K
D. 0 K

Answers

Answer 1
Answer:

Your answer is going to be 0 degrees Kelvin!
Answer 2
Answer:

This is really sneaky.  Of course it's going to be "Absolute Zero" ... the bottom of the Kelvin scale ... but what in the world is the difference between choice-C and choice-D ? ?

On the Kelvin scale, just to be different I guess, the unit of temperature is not called "the degree" Kelvin.  On that scale, the unit is called "the Kelvin", and the temperature is called 'so many' "Kelvins".

So the correct choice is D ... "zero Kelvins".

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The correct name for organisms that are made up of more than one cell ismulticellular organisms multiple-cell organisms many-celled organisms a bunch of cells organisms

When a warm air mass and cold air mass come together, like a warm front and cold front, a typical outcome is rain. What explains why rain forms in this situation? A. The cold air causes the moisture in the warm air to condense and precipitate as rain.
B. The cold air is moving faster than the warm air, which causes rain.
C. Because the cold air is denser, it causes rain.
D. The two air masses neutralize each other, which results in clouds that produce rain.

Answers

Answer:

A,when the two air masses meet,the cold air cools the block if warm air,causing it to condense and form stratus clouds( blankets of blank clouds that form when air rises slowly e.g. a warm air mass meets a cold one). Eventually when the cloud becomes saturated precipitation falls from them(precipitation is moisture in any form that falls from the atmosphere).

What makes a hypothesis testable

Answers

A hypothesis is testable when you can create an experiment to study the proposition contained within the hypothesis. For example, the hypothesis ‘Santa travels slower than a unicorn’ is testable in theory by measuring the speeds of both, but it is not truly testable because neither exists in reality.

Answer:

it must be able to be proved right or wrong - apex

Explanation:

Speakers A and B are vibrating in phase. They are directly facing each other, are 6.69 m apart, and are each playing a 75.0-Hz tone. The speed of sound is 343 m/s. What is the distance from speaker A to the first point on the line between the speakers where constructive interference occurs?

Answers

Answer:

3.117 m

Explanation:

Given that:

the distance of separation between speaker A and speaker B (L) = 6.69 m

Frequency (F) = 750 -Hz tone

Velocity of speed of sound = 343 m/s

The distance from Speaker A to the first point (L₁) on the line can be calculated by using the formula:

L_1=(L-A)/(2)

where A = (Velocity ofthe sound (V))/(Frequency (F))

we have:

L_1=(L-(V)/(F) )/(2)

L_1=(6.69-(343)/(750) )/(2)

L_1=(6.69-0.457 )/(2)

L_1=(6.233 )/(2)

L_1= 3.1165 m

L_1=3.117 m

∴ the distance from speaker A to the first point on the line between the speakers where constructive interference occurs = 3.117 m

True or false The sound of a police siren would be an example of the Doppler effect

Answers

The answer to the question is True.

The earth has a downward-directed electric field near its surface of about 150 N>C. If a raindrop with a diameter of 0.020 mm is suspended, motionless, in this field, how many excess electrons must it have on its surface?

Answers

Answer:

Q = 2.74 * 10^(-13) C

Explanation:

A rain drop has diameter given as

d = 0.020 mm

so the radius of the rain drop will be

R = 0.010 mm

now the volume of the rain drop is given as

V = (4)/(3)\pi R^3

V = (4)/(3)\pi(0.010* 10^(-3))^3

V = 4.19 * 10^(-15) m^3

now weight of the rain drop is given as

W = \rho V g

W = (1000)(4.19 * 10^(-15))(9.81)

W = 4.11 * 10^(-11) N

now this weight of the rain drop is counterbalanced by force due to electric field

so we have

QE = W

Q = (W)/(E)

Q = (4.11 * 10^(-11))/(150)

Q = 2.74 * 10^(-13) C

Final answer:

To determine the number of excess electrons on the surface of the raindrop, we can use the formula: mdrop = qeE. The electric field near the Earth's surface is given as 150 N/C. The mass of the raindrop can be calculated using its diameter.

Explanation:

To determine the number of excess electrons on the surface of the raindrop, we can use the formula:
mdrop = qeE

The electric field near the Earth's surface is given as 150 N/C. The mass of the raindrop can be calculated using its diameter. Once we have the mass, we can solve for the charge (qe) to find the number of excess electrons on its surface.

Let me calculate that for you.

Learn more about Excess electrons on a raindrop's surface here:

brainly.com/question/13274362

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I live in the city. It's always warmer in the city, compared to other areas, even at night. Why is that? The rain shadow effect makes surrounding areas cool and moist and the city warm and dry. Buildings absorb and retain heat from the Sun, producing the urban heat island effect. Lake effect snow only affects areas outside of the city. The city receives lake effect snow.

Answers

I live in the city. It's always warmer in the city, compared to other areas, even at night. Why is that?

A.) The rain shadow effect makes surrounding areas cool and moist and the city warm and dry.

B.) Buildings absorb and retain heat from the Sun, producing the urban heat island effect.

C.) Lake effect snow only affects areas outside of the city.

D.) The city receives lake effect snow.
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