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3 years ago

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Some pacemakers employ magnetic reed switches to enable doctors to change their mode of operation without surgery. A typical ree

d switch can be switched from one position to another with a magnetic field of 5.0x10-4 T. What current must a wire carry if it is to produce a 5.0x10-4 T field at 0.50m?I = ? kA

1 answer:

marta [7]3 years ago

3 0

Answer:

1.25 kA

Explanation:

The magnitude of the magnetic field produced by a current-carrying wire is given by:

$B=\frac{\mu_0 I}{2 \pi r}$

where

$\mu_0 = 1.26 \cdot 10^{-6} H/m$ is the vacuum permeability

$I$ is the current in the wire

r is the distance from the wire at which the field is calculated

In this problem, we have:

$B = 5.0\cdot 10^{-4} T$ is the intensity of the magnetic field

$r = 0.50 m$ is the distance from the wire

Re-arranging the equation, we can find the intensity of the current in the wire:

$I=\frac{2 \pi r B}{\mu_0}=\frac{2 \pi (0.50 m)(5.0\cdot 10^{-4}T)}{1.26\cdot 10^{-6} H/m}=1246 A=1.25 kA$

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3 years ago

Need help with this question

Alika [10]

Answer:

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Digital art

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Digital art is an artistic work or practice that uses digital technology as part of the creative or presentation process. Since the 1960s, various names have been used to describe the process, including computer art and multimedia art.[1] Digital art is itself placed under the larger umbrella term new media art.[2][3]

Maurizio Bolognini, Programmed Machines (Nice, France, 1992–97). An installation at the intersection of digital art and conceptual art (computers are programmed to generate flows of random images which nobody would see).

The image of the computer virus Chernobyl, created by Ukrainian new media artist Stepan Ryabchenko in 2011.

Irrational Geometrics digital art installation 2008 by Pascal Dombis

Joseph Nechvatal birth Of the viractual 2001 computer-robotic assisted acrylic on canvas

The Cave Automatic Virtual Environment at the University of Illinois, Chicago

After some initial resistance,[4] the impact of digital technology has transformed activities such as painting, drawing, sculpture and music/sound art, while new forms, such as net art, digital installation art, and virtual reality, have become recognized artistic practices.[5] More generally the term digital artist is used to describe an artist who makes use of digital technologies in the production of art. In an expanded sense, "digital art" is contemporary art that uses the methods of mass production or digital media.[6]

Lillian Schwartz's Comparison of Leonardo's self portrait and the Mona Lisa based on Schwartz's Mona Leo. An example of a collage of digitally manipulated photographs

The techniques of digital art are used extensively by the mainstream media in advertisements, and by film-makers to produce visual effects. Desktop publishing has had a huge impact on the publishing world, although that is more related to graphic design. Both digital and traditional artists use many sources of electronic information and programs to create their work.[7] Given the parallels between visual and musical arts, it is possible that general acceptance of the value of digital visual art will progress in much the same way as the increased acceptance of electronically produced music over the last three decades.[8]

Digital art can be purely computer-generated (such as fractals and algorithmic art) or taken from other sources, such as a scanned photograph or an image drawn using vector graphics software using a mouse or graphics tablet.[9] Though technically the term may be applied to art done using other media or processes and merely scanned in, it is usually reserved for art that has been non-trivially modified by a computing process (such as a computer program, microcontroller or any electronic system capable of interpreting an input to create an output); digitized text data and raw audio and video recordings are not usually considered digital art in themselves, but can be part of the larger project of computer art and information art.[10] Artworks are considered digital painting when created in similar fashion to non-digital paintings but using software on a computer platform and digitally outputting the

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