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3 years ago

Take my points already been warned once

Engineering

2 answers:

butalik [34]3 years ago

6 0

Answer:

okay

Explanation:

thanks

ANTONII [103]3 years ago

5 0

Answer:

bet

Explanation:

give me em

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True or False - Blueprints can be drawn both by hand and on a computer

Orlov [11]

Answer:

The answer is true.

Explanation:

Most of it is done in computer, but it can also be drawn out by hand.

6 0

3 years ago

Read 2 more answers

Water flows in a tube that has a diameter of D= 0.1 m. Determine the Reynolds number if the average velocity is 10 diameters per

Cloud [144]

Answer:

a) $Re_{D} = 111896.745$ , b) $Re_{D} = 1.119\times 10^{-7}$

Explanation:

a) The Reynolds number for the water flowing in a circular tube is:

$Re_{D} = \frac{\rho\cdot v\cdot D}{\mu}$

Let assume that density and dynamic viscosity at 25 °C are $997\,\frac{kg}{m^{3}}$ $0.891\times 10^{-3}\,\frac{kg}{m\cdot s}$ , respectively. Then:

$Re_{D}=\frac{(997\,\frac{kg}{m^{3}} )\cdot (1\,\frac{m}{s} )\cdot (0.1\,m)}{0.891\times 10^{-3}\,\frac{kg}{m\cdot s} }$

$Re_{D} = 111896.745$

b) The result is:

$Re_{D}=\frac{(997\,\frac{kg}{m^{3}} )\cdot (10^{-6}\,\frac{m}{s} )\cdot (10^{-7}\,m)}{0.891\times 10^{-3}\,\frac{kg}{m\cdot s} }$

$Re_{D} = 1.119\times 10^{-7}$

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4 years ago

At a festival, spherical balloons with a radius of 140.cm are to be inflated with hot air and released. The air at the festival

Tpy6a [65]

Answer:

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Explanation:

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4 years ago

The Clean Air Act Amendments of 1990 prohibit service-related releases of all ________.

ozzi

Answer:

D) Refrigerants.

Explanation:

Refrigerants refers to any chemical substance that undergoes a phase change (liquid and gas) so as to enable the cooling and freezing of materials. They are typically used in air conditioners, refrigerators, water dispensers, etc.

In the United States of America, the agency which was established by US Congress and saddled with the responsibility of overseeing all aspects of pollution, environmental clean up, pesticide use, contamination, and hazardous waste spills is the Environmental Protection Agency (EPA). Also, EPA research solutions, policy development, and enforcement of regulations through the resource Conservation and Recovery Act .

The Clean Air Act Amendments of 1990 prohibit service-related releases of all refrigerants such as R-12 and R-134a. This ban became effective on the 1st of January, 1993.

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3 years ago

A product (that has not been yet invented) that involves lighting up when something happens?

Zigmanuir [339]

Answer:

Maybe when there is a fire there can be fire drones that can take it out. and it can also resuce people who are stuck there.

Explanation:

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3 years ago