Pj Problems - Overview
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7 Spaces Of Interest - Overview
Triadic Unit Mesh
States Of Matter
COHN - Natures Engineering Of The Human Body
The Human-Body Systems
Faith, Love, Charity
Batteries are usually rated in amperes-hour. So, a battery rated at X amperes-hour is able to supply X amperes in an hour.
(a) Calculate the amount of charge a fully charged 100 ampere-hour battery is able to supply.
(b) Calculate the number of electrons required to realize the answer in (a).
(c) Calculate the rated chemical energy stored in a battery with a rated voltage = 12 V and a rated capacity of 350 A-h.
S7P3A31 (force - pull).
Pj Problem of Interest is of type force (pull).
Equations of interest: Q = It; E = IVt
Where Q is charge in coulomb of a current I flowing for t secs and E is the energy delivered in t secs by a circuit with a voltage source V and a current I.
(a) Current = 100 amperes, time = 3600 secs
So, charge, Q = 100 x 3600 = 36 x 104 C.
(b) -1.602 x 10-19 C is the charge of 1 electron
So, 36 x 104 C is the charge of (36 x 104)/ (-1.602 x 10-19) electrons = -(36/1.602)1023 = 22.7 x 1022 electrons.
(c) Voltage = 12 V, current = 350 A. time = 3600secs. So, Energy , E = 12x 350 x 3600 = 15.12 x 106 Joules = 15.12 MJ.
The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
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