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3 years ago

Describe various emerging technologies and their impact on the field of robotics.

1 answer:

3 0

The formal procedure for taking equipment out of service and ensuring it cannot be operated until an authorized person has returned it to service is

Explanation:

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What is the dimensionless heat conduction rate for a sphere at surface temperature T1 buried in an infinite medium of temperatur

dexar [7]

Solution :

The dimensionless conduction heat rate, $q_{ss}^*$

$q_{ss}^*=\frac{q\times L_c}{K A_s(T_1-T_2)}$ ...........(1)

where $L_c$ = characteristic length

$=\left(\frac{A}{4\pi} \right)^{1/2}. \sqrt{\frac{D^2}{4}}$

A is surface area

q = heat transfer

$q=Sk(T_1-T_2)$ ..................(2)

where, S = conductor shape factor

Now substituting (2) in (1),

$q_{ss}^* = \frac{Sk(T_1-T_2)L_c}{kA(T_1-T_2)}$

$q_{ss}^* = \frac{S \times L_c}{A}$

$q_{ss}^* = \frac{S \times D/2}{\pi D^2}$

$q_{ss}^* = \frac{S \times D}{2\pi D^2}$ ...................(3)

For a sphere, we know S = 2πD

Putting this in (3),

$q_{ss}^* = \frac{2 \pi D \times D}{2\pi D^2}$

$q_{ss}^* = \frac{2 \pi D^2}{2\pi D^2}$

$q_{ss}^* = 1$

Therefore, the dimensionless heat conduction rate for a sphere is 1.

7 0

3 years ago

A segment of a roadway has a free flow speed of 45 mph and a jam density of 25 ft per vehicle. Determine the maximum flow and at

-BARSIC- [3]

Answer:

2376 vph

Explanation:

Given data

free flow speed ( Vf ) = 45 mph

Jam density = 25 ft per vehicle

flow rate = 1950 vph

first we calculate the Jam density in vehicle /mile

= 5280 / 25 = 211.2 vehicle/mile

where ; 1 mile = 5280 feet

The maximum flow can be calculated using Greenshield method

q = ( Vf * jam density ) / 4 = ( 45 * 211.2 ) / 4

= 2376 vph

4 0

3 years ago

Aspectos de las técnicas escultóricas

mel-nik [20]

Técnicas y materiales de escultura
Modelado de arcilla. Clay tiene muchas ventajas para un artista. ...
Modelado de cera. El modelado con cera permite a un artista crear un diseño único. ...
Esculpir. ...
Talla de madera. ...
Talla de marfil. ...
Piedras semipreciosas y tallas de conchas. ...
Fundición de bronce. ...
Decoración.

Corrígeme si estoy equivocada.. :)

3 0

3 years ago

Write a single statement to print: user_word,user_number. Note that there is no space between the comma and user_number. Sample

kykrilka [37]

Answer:

cout<<"''<<user_word<<"' "<<user_number;

Explanation:

The above question was answered using C++ programming language.

The keyword cout represents print and it carries out print operation only.

It prints all variable in front of it.

Assume the values of user_word and user_number to be Charles and 20, respectively.

The output of the above instruction would be

'Charles' 20 just as it is in the sample output in the question.

In java programming language, it is

System.out.print("'"+user_word+"' "+user_number);

In Qbasic, it is

PRINT "'"+user_word+"' "+ user_number

8 0

3 years ago

A sinusoidal voltage source produces the waveform, v t = 1 + cos 2πft. Design a system with v t as its input such that an LED wi

DerKrebs [107]

Answer:

See explaination

Explanation:

LM358 is the useful IC which works as buffer. It enables circuit to remove overloading effect on each other. Image is in attachment.

We can define a light-emitting diode (LED) as a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons

See attached file for detailed solution of the given problem.

3 0

3 years ago