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3 years ago

How to build a robot

1 answer:

7 0

Seriously? Ok

first, get some good quality metal, preferably aluminum, if you want to avoid rust.

build in the the shape of a robot, you can use a doll to help you if you are a beginner, but feel free to shape it the a Star Wars Character!

create an AI (now you said robot not AI) and fix everything up.

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A ring-shaped seal, made from a viscoelastic material, is used to seal a joint between two rigid pipes. When incorporated in the

scoundrel [369]

I’m not sure what this question is talking about. I will get back to you later on this let me rethink it. 2.22578

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3 years ago

Air enters a compressor operating at steady state with pressure of 90 kPa, at a temperature of 350 K, and a volumetric flow rate

natita [175]

Answer:

$T_{out} = 457.921\,K$

Explanation:

Before determining the exit temperature of air, it is required to find the specific enthalpy at outlet by using the First Law of Thermodynamics:

$-\dot Q_{out} + \dot W_{un} + \dot m \cdot (h_{in}-h_{out})=0$

$h_{out} = \frac{\dot W_{in}}{\dot m}- q_{out} +h_{in}$

An ideal gas observes the following mathematical model:

$P\cdot V = n\cdot R_{u}\cdot T$

Where:

$P$ - Absolute pressure, in kilopascals.

$V$ - Volume, in cubic meters.

$n$ - Quantity of moles, in kilomole.

$R_{u}$ - Ideal gas universal constant, in $\frac{kPa\cdot m^{3}}{kmole\cdot K}$ .

$T$ - Absolute temperature, in kelvin.

The previous equation is re-arranged in order to calculate specific volume at inlet:

$P\cdot V = \frac{m}{M}\cdot R_{u}\cdot T$

$\nu = \frac{R_{u}\cdot T}{P\cdot M}$

$\nu_{in} = \frac{(8.314\,\frac{kPa\cdot m^{3}}{kmol\cdot K} )\cdot (350\,K)}{(90\,kPa)\cdot (28.97\,\frac{kg}{kmol} )}$

$\nu_{in} = 1.116\,\frac{m^{3}}{kg}$

The mass flow is:

$\dot m = \frac{\dot V}{\nu_{in}}$

$\dot m = \frac{0.6\,\frac{m^{3}}{s} }{1.116\,\frac{m^{3}}{kg} }$

$\dot m = 0.538\,\frac{kg}{s}$

The specific enthalpy in ideal gases depends on temperature exclusively. Then:

$h_{in} = 350.49\,\frac{kJ}{kg}$

The specific enthalpy at outlet is:

$h_{out} = \frac{75\,kW}{0.538\,\frac{kg}{s} }-30\,\frac{kJ}{kg} + 350.49\,\frac{kJ}{kg}$

$h_{out} = 459.895\,\frac{kJ}{kg}$

The exit temperature of air is:

$T_{out} = 457.921\,K$

5 0

3 years ago

Two kg of N2 at 450 K, 7 bar is contained in a rigid tank connected by a valve to another rigid tank holding 1 kg of O2 at 300 K

11111nata11111 [884]

Answer:WHo knows.Explanation:

7 0

3 years ago

he ventilating fan of the bathroom of a building has a volume flow rate of 28 L/s and runs continuously. If the density of air i

stiks02 [169]

Answer:

$\Delta m = 2903.04 kg$

Explanation:

The mass of vented out in one day is:

$\Delta m = \rho_{air}\cdot \dot V \cdot \Delta t\\\Delta m = (1.20 \frac{kg}{m^{3}} )\cdot (28 \frac{L}{s}) \cdot (\frac{1 m^{3}}{1000 L} )\cdot (24 h)\cdot (\frac{3600 s}{1 h} ) \\\Delta m = 2903.04 kg$

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3 years ago

Select the correct answer. Felix aspires to be an engineer working for the government. What credentials will Felix require to ap

Aneli [31]

Answer:

Explanation:

5 0

2 years ago