Answer:
To find the diameter of the wire, when the following are given:
Resistivity of the material (Rho), Current flowing in the conductor, I, Potential difference across the conductor ends, V, and length of the wire/conductor, L.
Using the ohm's law,
Resistance R = (rho*L)/A
R = V/I.
Crossectional area of the wire A = π*square of radius
Radius = sqrt(A/π)
Diameter = Radius/2 = [sqrt(A/π)]
Making A the subject of the formular
A = (rho* L* I)V.
From the result of A, Diameter can be determined using
Diameter = [sqrt(A/π)]/2. π is a constant with the value 22/7
Explanation:
Error and uncertainty can be measured varying the value of the parameters used and calculating different values of the diameters. Compare the values using standard deviation
Tornadoes are more common in the united states than in the other countries. united states received a total of 1,200 tornadoes annually, four times the amount seen in europe. most tornadoes in the united states occur east of the rocky mountains. the great plains, the midwest, the mississippi valley and the southern united states, are all areas that are vulnerable to tornadoes.
Answer:
Explanation:
Given
Height of tree is H=320 ft
length of shadow L=130 ft
let 
be the angle of elevation
using trigonometric relation
B. by taking measurements during an experiment
All electromagnetic radiation ... all wavelengths, all frequencies ... has the
same speed, as long as you're measuring all through the same medium.
The speed is fastest in vacuum ... 299,792,458 meters per second. It's
slower than that in any material, and different in every material.
