Answer:
R = 0.14 Ω
Explanation:
The resistance of a metal is given by the relation
R =
where ρ the resistivity is 5.6 10-8 Ω m, they also give the length and the cross section (area)
Let's reduce the magnitudes to the SI system
L = 200cm (1m / 100cm) = 2.00m
A = 8.0 10⁻⁷ m²
let's calculate
R = 5.6 10⁻⁸
R = 1.4 10⁻¹ Ω
R = 0.14 Ω
Answer:
If the density of the object is high its molecular arrangement is compact while if the density is lows its molecular arrangement isnt that compact
Explanation:
The Dalton's atomic theory was proposed by John Dalton in the 19th century through his experiment on gases. Some of his propositions are;
- Atoms are the smallest indivisible particles of matter and they can neither be created nor destroyed.
- Elements have identical atoms that are different from atoms of other elements.
- Atoms vary in size and mass for different elements and this distinguishes them from atoms of other elements.
- Whole number combination of atoms results in the formation of compounds.
- Compounds are formed in chemical reactions when atoms recombine with one another.
You can compare your options with any of the statements above.
Learn more:
Dalton's atomic theory brainly.com/question/1979129
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Answer:
Range of R is from 4.81MΩ to 36.54 MΩ
Explanation:
Capacitance(C) = 0.520 µF = 0.52 x 10^(-6) F
Time constant = from 2.5 to 19 seconds
In RC circuits, time constant is;
r = RC
Where R is the range (in MΩ)
And r is time constant
Thus,
R = r/c
So minimum range will be at 2.5seconds.
Thus; Rmin = 2.5/(0.52 x 10^(-6)) = 4.81 x 10^(6) Ω = 4.81MΩ
Rmax = 19/(0.52 x 10^(-6)) = 36.54 x 10^(6) Ω = 36.54 MΩ
Power =Force * Velocity
Velocity = Distance/Time = 2/0.5 = 4 m/s
Therefore,
P = 1000*4 = 4000 W = 4 kW
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