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3 years ago

What sort of trade-offs do you think engineers make between functionality, safety, and aesthetics when building a real bridge?

Physics

2 answers:

Virty [35]3 years ago

7 0

Answer:

It seems in this day and age aesthetics is the main priority then safety and functionality lagging behind. as long as it looks pretty and is safe people don't really care how well it works you just make do!

skelet666 [1.2K]3 years ago

5 0

They make sure the bridge is functional and safe before the add the
<span>aesthetics</span>

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The attractive force that acts between all objects is the (5 points)

Talja [164]

The gravitational force.

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3 years ago

Write 4-5 sentences about what the early scientists from Aristotle to Galileo thought about the nature of motion. So far I have

nika2105 [10]

<span>Aristotle would say that an object comes to rest because it got tired. Aristotle came up with ideas, but never tested them. Galileo used experiments and mathematical models to analyze motion. He used a slanted inclined plane an order to slow down the acceleration due to gravity on an object. He found out that an object accelerates as it falls. </span>

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4 years ago

Read 2 more answers

Irina finds an unlabeled box of fine needles, and wants to determine how thick they are. A standard ruler will not do the job, a

Vsevolod [243]

Answer:

$d=\frac{1.22\times 640\times 10^{-9}\times 21.7}{7.35\times 10^{-2}}=2305.21\times 10^{-7}m$

Explanation:

The expression which represent the first diffraction minima by a circular aperture is given by $d sin\Theta =1.22\lambda$ --------eqn 1

The angle through which the first minima is diffracted is given by $tan\Theta =\frac{y_1}{D}$ ---------eqn 2

As $\Theta$ is very small so we can write $sin\Theta =tan\Theta$

So from eqn 1 and eqn 2 we can write

$y_1=\frac{1.22\lambda D}{d}$ --------eqn 3

Here $y_1$ is the position of first maxima D is the distance of screen from the circular aperture d is the diameter of aperture

It is given that diameter of circular aperture is 14.7 cm so $y_1=\frac{14.7}{2}=7.35 \ cm$

Now putting all these value in eqn 3

$d=\frac{1.22\lambda D}{y_1}$

$d=\frac{1.22\times 640\times 10^{-9}\times 21.7}{7.35\times 10^{-2}}=2305.21\times 10^{-7}m$

8 0

3 years ago

Can a plane mirror firm a real image ? if yes tell me how ?

alexdok [17]

Answer:

Explanation:

A plane mirror will produce a virtual image of a real object. But it is correct that a plane mirror will also produce a real image of a virtual object.A virtual image An image in a mirror is a virtual object, which can in turn be used to create another image. This can occur when you have more than one optical element in the optical system. Then the object of one component becomes the image of the next optical component.

So the answer is Yes it will!!!!

3 0

3 years ago

Read 2 more answers

A 200g piece of iron is heated at 100C. It is than dropped into water to bring its temperature down to 22C. What is the amount o

gizmo_the_mogwai [7]

Answer:

6926.4J

Explanation:

Given parameters:

Mass of iron = 200g

Initial temperature = 100°C

Final temperature = 22°C

Unknown:

Amount of heat transferred to the water = ?

Solution:

The quantity of heat transferred to the water is a function of mass and temperature of the iron;

H = m c Ф

m is the mass of the iron

Ф is the change in temperature

C is the specific heat capacity of iron = 0.444 J/g°C

Now;

insert the parameters and solve;

H = 200 x 0.444 x (100-22)

H = 6926.4J

8 0

3 years ago