Physics, 17.03.2020 03:25 josecano2

A straight horizontal rod of mass 50 gm and length 50 cm is placed in uniform horizontal magnetic field of 0.2T perpendicular to X. Calculate the current in X if the force acting on it just balances its weight.(g = 9.8 m/s^2)

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Answer from: Garrell

Given Information:

Magnetic field = B = 0.2 T

Mass of rod = m = 50 g = 0.050 kg

Length of rod= 50 cm = 0.50 m

Gravitational acceleration = g = 9.8 m/s²

Required Information:

Current flowing through rod = I = ?

Current flowing through rod = 4.9 A

Explanation:

The magnetic force produced in a current carrying rod with magnetic field B is given by

F = BILsin(θ)

This magnetic force is balanced by the weight of the rod which is given by

F = mg

mg = BILsin(θ)

I = mg/BLsin(θ)

Where m is the mass of the rod, L is the length of the rod, B is the magnetic field induced and θ is the angle between magnetic field and current.

I = 0.050*9.8/0.2*0.50*sin(90°)

I = 4.9 A

Therefore, a current of 4.9 A will flow through the rod placed in uniform magnetic field when the force acting on it just balances its weight.

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

it is called kinetic energy

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