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3 years ago

What type of circles have two or more circles with different center points?

Engineering

2 answers:

Assoli18 [71]3 years ago

6 0

Answer:

Concentric circles

Explanation:

Concentric circles are two or more circles which have the same center point. The region between two concentric circles is called an annulus.

lorasvet [3.4K]3 years ago

3 0

Concentric circles I think

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Which of the following elements found in fertilizer helps plants produce fruit?

marin [14]

I think it’s zinc
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3 years ago

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An incompressible viscous fluid flows through a pipe with a flow rate of 1 mL/s. The pipe has a uniform diameter D0 and a length

Nataly [62]

Answer:

$Q_2 = 32$ mL/s

Explanation:

Given :

The flow is incompressible viscous flow.

The initial flow rate, $Q_1$ = 1 mL/s

Initial diameter, $D_1= D_0$

Initial length, $L_1=L_0$

The initial pressure difference to maintain the flow, $P_1=P_0$

We know for a viscous flow,

$\Delta P = \frac{32 \mu V L}{D^2}$

$\Delta P = \frac{32 \mu Q L}{\frac{\pi}{4}D^4}$

$Q \propto \Delta P \times D^4$

$\frac{Q_1}{Q_2}= \frac{P_1}{P_2} \times \left( \frac{D_1}{D_2} \right)^4$

$\frac{1}{Q_2}= \frac{P_0}{2P_0} \times \left( \frac{D_0}{2D_0} \right)^4$

$\frac{1}{Q_2}= \frac{1}{2} \times \left( \frac{1}{2} \right)^4$

$\frac{1}{Q_2}= \frac{1}{32}$

∴ $Q_2 = 32$ mL/s

6 0

3 years ago

Define in detail Technology and Evolution in the context of your prior Knowledge?

julsineya [31]

The technological evolution entails the transformation of society through technological development.

<h3>What is Technology?</h3>

Technology refers to a machinery and equipment used to apply scientific knowledge for practical purposes.

<h3>What is Evolution?</h3>

Basically, an evolution means the process of growth and development of a subject, technology, situation, event etc

Hence, the technological evolution entails the transformation of society through technological development.

In conclusion, the the new discoveries as a result of technology evolution primarily impacted the society on a positive level.

Read more about Technology

<em>brainly.com/question/11554395</em>

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2 years ago

Create a document that includes a constructor function named Company in the document head area. Include four properties in the C

Stella [2.4K]

I have added the answer as a pic due to difficulties pasting the text here.

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4 years ago

g a heat engine is located between thermal reservoirs at 400k and 1600k. the heat engine operates with an efficiency that is 70%

Bond [772]

Answer:

<em>Heat rejected to cold body = 3.81 kJ</em>

Explanation:

Temperature of hot thermal reservoir Th = 1600 K

Temperature of cold thermal reservoir Tc = 400 K

<em>efficiency of the Carnot's engine = 1 - </em> $\frac{Tc}{Th}$ <em> </em>

eff. of the Carnot's engine = 1 - $\frac{400}{600}$

eff = 1 - 0.25 = 0.75

<em>efficiency of the heat engine = 70% of 0.75 = 0.525</em>

work done by heat engine = 2 kJ

<em>eff. of heat engine is gotten as = W/Q</em>

where W = work done by heat engine

Q = heat rejected by heat engine to lower temperature reservoir

from the equation, we can derive that

heat rejected Q = W/eff = 2/0.525 = <em>3.81 kJ</em>

6 0

3 years ago