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4 years ago

Diffusion occurs faster in gases than in liquids because _____.

Physics

2 answers:

jolli1 [7]4 years ago

5 0

The correct answer to go in the blank would be A) The particles are moving faster.

My name is Ann [436]4 years ago

3 0

Answer:

the particles are moving faster

Explanation:

As we know that diffusion means the rate of escape of gas from small opening.

So here the diffusion rate is basically related to the speed of gas molecules to escape out of the closed container.

So here rate of diffusion is given as

$Rate = \sqrt{\frac{P}{\rho}}$

so it depends on pressure of gas and density of gas.

Also we know that gas molecules are loosely bounded to each other as we compare the bonding between molecules of liquid.

So here we will say that correct answer is

the particles are moving faster

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A car drives on a circular road of radius R. The distance driven by the car is given by = + [where a and b are constants, and t

pishuonlain [190]

Answer:

The question is incomplete, the complete question is "A car drives on a circular road of radius R. The distance driven by the car is given by d(t)= at^3+bt [where a and b are constants, and t in seconds will give d in meters]. In terms of a, b, and R, and when t = 3 seconds, find an expression for the magnitudes of (i) the tangential acceleration aTAN, and (ii) the radial acceleration aRAD3"

answers:

a. $18a m/s^{2}$

b. $a_{rad}=\frac{(27a +b)^{2}}{R}$

Explanation:

First let state the mathematical expression for the tangential acceleration and the radial acceleration.

a. tangential acceleration is express as

$a_{tan}=\frac{d|v|}{dt} \\$

since the distance is expressed as

$d=at^{3}+bt$

the derivative is the velocity, hence

$V(t)=\frac{dd(t)}{dt}\\V(t)=3at^{2}+b\\$

hence when we take the drivative of the velocity we arrive at

$a_{tan}=\frac{dv(t)}{dt}\\ a_{tan}=6at\\t=3 \\we have \\a_{tan}=18a m/s^2$

b. the expression for the radial acceleration is expressed as

$a_{rad}=\frac{v^{2}}{r}\\a_{rad}=\frac{(3at^{2} +b)^{2}}{R}\\t=3\\a_{rad}=\frac{(27a +b)^{2}}{R}$

4 0

3 years ago

How does the thermosphere,(the outer most layer) help earth?

Neko [114]

The THERMOSPHERE is the layer of the Earth's Atmosphere directly above the Mesosphere and directly below the Exophere.(I know its not much but,I hope it helps you)

7 0

3 years ago

What statement is true? (more than 1 answer)

Lisa [10]

Thes are all correct :<span>2.Scientists observe natural events occurring around them. They question these observations and investigate them.

3.All scientists follow one scientific method of investigation

4.If a hypothesis is not verified by the results from the scientific method, scientists may either redo the process or create a new hypothesis.</span>

7 0

3 years ago

A concrete piling of 50 kg is suspended from a steel wire of diameter 1.0 mm and length 11.2 m. How much will the wire stretch?

pentagon [3]

Explanation:

It is given that,

Mass of concrete pilling, m = 50 kg

Diameter of wire, d = 1 mm

Radius of wire, r = 0.0005 m

Length of wire, L = 11.2

Young modulus of steel, $Y=20\times 10^{10}\ N/m^2$