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Diano4ka-milaya [45]
3 years ago
12

Find the pressure exerted by the water bed on the floor when the bed rests in its normal position. Assume the entire lower surfa

ce of the bed makes contact with the floor. SOLUTION When the water bed is in its normal position, the area in contact with the floor is 4.00 m2. Use the the definition of pressure to find the pressure (in Pa). P = Mg 4.00 m2 = Pa EXERCISE A carpenter decides to build a very sturdy bedframe to support the water bed. The frame has four legs, each with a square bottom with side length 7.0 inches. The bedframe weighs 110 kg. What is the pressure (in Pa) exerted by the water bed on the floor when it is supported by the bedframe?
Engineering
1 answer:
LenaWriter [7]3 years ago
7 0

A water bed is 2.00m on a side and 30.0cm deep. Find the pressure that the water bed exerts on the floor. Assume that the entire lower surface of the bed makes contact with the floor.

Density of water, ρ=1000kg/m^3 g=10m/s

This is the missing part of the question.

Answer:

102343.75 Pa

Explanation:

Lenght of bed = 2 m on each side

Depth = 30 cm = 0.3 m

Volume of bed = 2 x 2 x 0.3 = 1.2 m^3

Weight of the bed = pgv

Where p = density of water

g is acceleration due to gravity 10 m/s^2.

V is the volume

Weight of bed = 1000 x 10 x 1.2 = 12000 N

Mass of bed frame = 110 kg

Weight of bed frame = 110 x 10 = 1100 N

Total weight of bed frame and bed = 12000 + 1100 = 13100 N

Side lenght of bed leg = 7 in = 0.1778 m

Area of each bed frame leg = 0.1778 x 0.1778 = 0.032 m2 (legs are square faced)

Total surface area = 0.032. X 4 = 0.128 m2.

Pressure exerted on floor = total weight ÷ area

= 13100/0.128

= 102343.75 Pa

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Answer:

For SGID you type this

$ find . -perm /4000

For SUID you type this

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Explanation:

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$ find directory -perm /permissions

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3 years ago
Make two lists of applications of matrices, one for those that require jagged matrices and one for those that require rectangula
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Answer:

Explanation:

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3 0
3 years ago
A rod that was originally 100-cm-long experiences a strain of 82%. What is the new length of the rod?
Ierofanga [76]

Answer: (b)

Explanation:

Given

Original length of the rod is L=100\ cm

Strain experienced is \epsilon=82\%=0.82

Strain is the ratio of the change in length to the original length

\Rightarrow \epsilon =\dfrac{\Delta L}{L}\\\\\Rightarrow 0.82=\dfrac{\Delta L}{100}\\\\\Rightarrow \Delta L=82\ cm

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8 0
3 years ago
There are 10 vehicles in a queue when an attendant opens a toll booth. Vehicles arrive at the booth at a rate of 4 per minute. T
dmitriy555 [2]

Answer:

as slated in your solution, if delay time is 2.30 mins, hence 9 vehicle will be on queue as the improved service commenced.

Explanation:

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3 0
3 years ago
How do technological artifacts affect the way that you live?
Maslowich

Answer:

Artefacts can influence our actions in several ways. They can be instruments, enabling and facilitating actions, where their presence affects the number and quality of the options for action available to us. They can also influence our actions in a morally more salient way, where their presence changes the likelihood that we will actually perform certain actions. Both kinds of influences are closely related, yet accounts of how they work have been developed largely independently, within different conceptual frameworks and for different purposes. In this paper I account for both kinds of influences within a single framework. Specifically, I develop a descriptive account of how the presence of artefacts affects what we actually do, which is based on a framework commonly used for normative investigations into how the presence of artefacts affects what we can do. This account describes the influence of artefacts on what we actually do in terms of the way facts about those artefacts alter our reasons for action. In developing this account, I will build on Dancy’s (2000a) account of practical reasoning. I will compare my account with two alternatives, those of Latour and Verbeek, and show how my account suggests a specification of their respective key concepts of prescription and invitation. Furthermore, I argue that my account helps us in analysing why the presence of artefacts sometimes fails to influence our actions, contrary to designer expectations or intentions.

When it comes to affecting human actions, it seems artefacts can play two roles. In their first role they can enable or facilitate human actions. Here, the presence of artefacts changes the number and quality of the options for action available to us.Footnote1 For example, their presence makes it possible for us to do things that we would not otherwise be able to do, and thereby adopt new goals, or helps us to do things we would otherwise be able to do, but in more time, with greater effort, etc

Explanation:

Technological artifacts are in general characterized narrowly as material objects made by (human) agents as means to achieve practical ends. ... Unintended by-products of making (e.g. sawdust) or of experiments (e.g. false positives in medical diagnostic tests) are not artifacts for Hilpinen.

3 0
3 years ago
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