Answer:
E = α/2∈₀ [ 1 - a²/r² ]
Ф = α/2∈₀
Explanation:
Using Gauss Law:
ρ(r) = a/r, dA
= 4 π r²d r
Ф = ρ(r')dA
Ф = ρ(r')dA
= 4πα r'dr'
Ф = 4 π α 1/2(r²-a²)
E(4πr²) = ∈₀
= ∈₀(4πr²)
= α (r² - a²) / 2 ∈₀ (r²)
= α/2∈₀ [ r²/r² - a²/r² ]
E = α/2∈₀ [ 1 - a²/r² ]
Electric field of the point charge:
E = q / 4π∈₀r²
= α / 2 ∈₀ - (α / 2 ∈₀ )(a² / r²) + q / 4 π ∈₀ r²
For to be constant:
- (αa²/ 2 ∈₀ ) + q / 4 π ∈₀ = 0 and q = 2παa²
-> α / 2 ∈₀ - αa²/ 2 ∈₀ + 2παa² / 4 π ∈₀
= α - αa² + αa² / 2 ∈₀
= α /2 ∈₀
Hence:
Ф = α/2∈₀
Answer:
b. producer
Explanation:
u cant have a food chain with out the smallest part. in other words if a deer had no grass to eat it wouldn't be on the food chain because it didn't have grass, than the lion would then starve and slowly die out after the deer ext (you get it).
Answer: 17 degrees (16.7 degrees)
Explanation: You could simply draw the diagram and use tanФ to obtain the answer! check the attached image and lemme know if you still have any doubts! :)
Answer:
(L: Length, T: Time)
p: Dimension: L; unit: m
q: Dimension: L/T or (L)*(T)^-1; unit: m/s
r: Dimension: L/T^2 or (L)*(T)^-2; unit: m/s^2
Explanation:
since y is distance (Length), make all terms L distance.
p is same as y dimension ==> dimension: L; unit: m (meter)
qt dimension is L ==> q dimension :L/T; unit: m/s
rt^2 dimension is L ==> r dimension : L/T^2; unit: m/s^2
5 × 12 = 60 I got 60mph I multiply and that's how I get 60