Physics, 27.03.2020 18:23 Annaborden02

Calculate the jul(i)an heat released in 20s on the resistors R1 = 6 ohm and R2 = 3 ohm which are connected in parallel, if the voltage at the ends of the resistor is U = 24V ?

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Answer from: bettybales1986

The heat released in 20s is 5760J

Explanation:

Given:

Time, t = 20s

Resistor, R₁ = 6Ω

R₂ = 3Ω

Voltage, V = 24V

Heat, H = ?

When the two resistors are connected in parallel, the net resistance would be:

$\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2}$

Substituting the value in the above formula we get:

$\frac{1}{R} = \frac{1}{6} + \frac{1}{3} \\\\\frac{1}{R} = \frac{1+2}{6} \\$

$\frac{1}{R} = \frac{3}{6} \\\\R = 2$

The net resistance is 2Ω

According to the joule's law:

$H = \frac{V^2}{R} t$

On substituting the value we get:

$H = \frac{(24)^2}{2} X 20\\\\H = 5760J$

Therefore, heat released in 20s is 5760J

Answer from: Quest

Acetic acid /əˈsiːtɪk/, systematically named ethanoic acid /ˌɛθəˈnoʊɪk/, is a colourless liquid organic compound with the chemical formula ch3cooh (also written as ch3co2h or c2h4o2). when undiluted, it is sometimes called glacial acetic acid. vinegar is no less than 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. acetic acid has a distinctive sour taste and pungent smell. in addition to household vinegar, it is mainly produced as a precursor to polyvinyl acetate and cellulose acetate. it is classified as a weak acid since it only partially dissociates in solution, but concentrated acetic acid is corrosive and can attack the skin.acetic acidnamespreferred iupac nameacetic acidsystematic iupac nameethanoic acidother namesvinegar (when dilute); hydrogen acetate; methanecarboxylic acid[1][2]identifierscas number64-19-7 3d model (jsmol)interactive image3dmetb00009 reference506007chebichebi: 15366 chemblchembl539 chemspider171 drugbankdb03166 echa infocard100.000.528ec number200-580-7e numbere260 (preservatives)gmelin reference1380iuphar/bps1058keggd00010 meshacetic+acidpubchem cid176rtecs numberaf1225000uniiq40q9n063p un number2789inchiinchi=1s/c2h4o2/c1-2(3)4/h1h3,(h,3,4) key: qtbsbxvteameqo-uhfffaoysa-n smilescc(o)=o

Answer from: Quest

A) acceleration. this seems to be the one that makes sense.

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Calculate the jul(i)an heat released in 20s on the resistors R1 = 6 ohm and R2 = 3 ohm which are con...

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