Answer:
E = 4.72 * 10⁻⁶ Nm²
Explanation:
Parameters given:
Outer radius, R = 3.70cm = 0.037m
Inner radius, r = 3.15cm = 0.0315m
Permittivity of free space, ε₀ = 8.85 * 10⁻¹² C/Nm²
Charge density: 1.22 * 10⁻³ C/m³
The question requires that we solve using Gauss law which states that the net electric field through a closed surface is proportional to the enclosed electric charge.
Hence,
E = Q/Aε₀
Charge Q is given as
Q = ρπ(R² ⁻ r²)L
A = 2π(R - r)L
E = [ρπ(R² ⁻ r²)L]/[2π(R - r)ε₀L]
Using difference of two squares,
(R² ⁻ r²) = (R + r)(R - r)
E =[ρ(R + r)]/(2ε₀)
E = [1.22 * 10⁻³ *(0.0370 + 0.0315)]/(2 * 8.85 * 10⁻¹²)
E = 4.72 * 10⁻⁶ Nm²
Different speeds of light through two separate media ... and the difference in wavelength caused by the difference ... causes the bending of waves fronts associated with light rays.
AFTER the bend, since the light rays then travel in a different direction, we may also say that the 'velocity' has changed.
Answer:
The minimum uncertainty in its position is 1.1587 nm
Explanation:
Given;
average speed of electron, v = 5.00 × 10⁶ m/s
percentage of speed uncertainty = 1%
Δv = 0.01( 5.00 × 10⁶ m/s) = 5.00 × 10⁴ m/s
Applying Heisenberg's uncertainty principle, to determine the uncertainty in its position.
ΔxΔP ≥ h/4π
Δx(mΔv) ≥ h/4π
Δx = h/4πmΔv
where;
Δx is uncertainty in its position
h is Planck's constant
m is mass of electron
Δx ≥
Δx ≥ 1.1587 nm
Therefore, the minimum uncertainty in its position is 1.1587 nm
Answer:
It is less than 25m/s as the correct average is 24m/s.
Explanation:
This is becuase you need to take the average of the two speeds (18m/s and 30m/s) 18 + 30 divided by 2 is 24m/s.
Periodic table of the elements. Periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus