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Kipish [7]
3 years ago
12

Ual Learning 2.0

Physics
1 answer:
Andrew [12]3 years ago
7 0

Answer: Energy Source, wires, device that needs electrical energy.

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When the starter motor on a car is engaged, there is a 300 A cunent in the wires between the bauery and the motor. Suppose the w
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Answer:

diameter of transmission is 3.473 mm

Explanation:

given data

current = 300 A

total wire length = 1.0 m

voltage drop = 0.55 V

solution

as here Resistivity of copper is = 1.68 × 10^{-8} ohm- m

so we get here resistance of wire that is

resistance = \frac{V}{I}    ..............1

R = \frac{0.55}{310}  

R = 1.774 × 10^{-3}  ohm

and now we get diameter of wire that is

R = \frac{\rho l}{A}    .............2

\pi \frac{d^2}{4} = \frac{\rho l}{R}    

d² = \frac{4\rho l}{\pi R}     ...............3

put here value

d² = \frac{4\times 1.68\times 10^{-8} \times 1}{\pi \times 1.774\times 10^{-3}}  

d = \sqrt{12.064\times 10^{-6}}

d = 3.473 × 10^{-3} m

d = 3.473 mm

so diameter of transmission is 3.473 mm

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4 years ago
What is chemical
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Answer:

D

Explanation:

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If I wave my arm does it cause a convection wave
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 A cat is being chased by a dog. Both are running in a straight line at constant speeds. The cat has a head start of 3.8 m. The
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In 6 secs, the dog covers-
S=vt
8.9*6 = 53.4 m.
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