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2 years ago

The mattress of a water bed is 4.00 m long by 4.00 m wide and 30.0 cm deep. calculate the weight of the water in the mattress.

SAT

1 answer:

Mamont248 [21]2 years ago

4 0

If the density of the mattress is 1000 kg/m³. Then the mass of the mattress will be 4800 kg.

<h3>What is density?</h3>

Density is defined as the mass per unit volume. It is an important parameter in order to understand the fluid and its properties. Its unit is kg/m³.

The mass and density relation is given as

mass = density × volume

The mattress of a water bed is 4.00 m long by 4.00 m wide and 30.0 cm deep. And the density of the mattress is 1000 kg/m³.

Then the mass of the mattress will be

M = 1000 x 4 x 4 x 0.3

M = 4800 kg

To learn more about the density refer to the link;

brainly.com/question/952755

#SPJ1

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The surface tension of water in air is approximately 0.00518 lbf/ft. if the atmospheric pressure is 14.7psia, what is the pressu

strojnjashka [21]

Based on the calculations, the pressure inside this droplet is equal to 2,909.35 kPa.

<u>Given the following data:</u>

Surface tension = 0.00518 lbf/ft to N/m = 0.00702 N/m.

Atmospheric pressure = 14.7psia to kPa = 101.35 kPa.

Diameter = 0.01 mm to m = 0.00001 m.

Radius, r = $\frac{diamter}{2} =\frac{0.0001}{2}$ = 0.000005 m.

<h3>How to determine the pressure inside a droplet.</h3>

For a droplet with only one surface, its pressure is given by this formula:

$P_1-P_2=\frac{2 \tau}{r} \\\\P_1=\frac{2 \tau}{r}+P_2$

Substituting the given parameters into the formula, we have;

$P_1=\frac{2 \times 0.00702}{0.000005} + 101.35\\\\P_1=2808+ 101.35$

Inside pressure = 2,909.35 kPa.

Read more on pressure here: brainly.com/question/24827501

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2 years ago

On a scale drawing, the height of a tree is 2. 25 inches. If the scale of the drawing is 1 inch : 75 feet, how tall is the tree?

Marta_Voda [28]

Answer:

168.75

Explanation:

168.75 tall is the tree.

Please mark as Brainliest!!

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2 years ago

Financially, it probably makes more sense to:

n200080 [17]

Answer:

i believe b.

Explanation:

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3 years ago

The function f is continuous on the interval (0,16), and f is twice differentiable except at x=5 where the derivatives are undef

Oliga [24]

Using it's definition, it is found that the function f(x) has a point of inflection at:

A. x = 8 only.

<h3>What are the points of inflection of a function?</h3>

The critical points of a function are the <u>values of x</u> for which:

$f^{\prime\prime}(x) = 0$

Additionally, there has to be a change in the sign of $f^{\prime\prime}(x)$

Researching the problem on the internet, it is found that:

For 0 < x < 5, $f^{\prime\prime}(x) > 0$ .

For x = 5, $f^{\prime\prime}(x)$ is undefined.

For 5 < x < 8, $f^{\prime\prime}(x) < 0$ .

For x = 8, $f^{\prime\prime}(x) = 0$ .

For 8 < x < 12, $f^{\prime\prime}(x) > 0$ .

For x = 12, $f^{\prime\prime}(x) = 0$ .

For 12 < x < 16, $f^{\prime\prime}(x) > 0$ .

The two conditions, $f^{\prime\prime}(x) = 0$ and a change in the signal of $f^{\prime\prime}(x)$ are only respected at x = 8, which is the lone inflection point.

You can learn more about points of inflection at brainly.com/question/10352137

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2 years ago

Match the text quotation with the sense to which it most appeals.

alexandr1967 [171]

The correct senses and quotations are:

Generosity - Largesse.
Talkative - Voluble.
Conflicting - Discordant.
Appealing - Invocation.
Having more than one mate at a time - Polygamous

<h3>Definition of terms </h3>

A person who is described as having largesse is one who is quite generous with their money. A voluble person on the other hand tends to talk a lot.

When there is discordance it means that there is some form of conflict. An invocation is an appeal for something to be done. A polygamous organism has multiple mates.

Find out more on polygamy at brainly.com/question/527745.

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2 years ago