Answer:
d_{b} = 2 d_{a}
Explanation:
The electrical resistance for a cylindrical wire is described by the expression
R = ρ L / A
The area of a circle is
A = π r²
r = d / 2
A = π d²/4
We substitute
R = ρ L 4 /π d²
Let's apply this expression to our case, they indicate that the resistance of wire A is 4 times the resistance of wire B
= 4 R_{b}
We substitute
ρ 4/π 
² = 4 (ρ 4/π d_{b}²)
1 / d_{a}² = 4 / d_{b}²
d_{a} = d_{b} / 2
<span> Lava </span>erupts<span> on the </span>sea floor<span> also the type of rock that cools quickly is Magma and are finer grained and glassy.
Hope this helps</span>
Answer:
Kinetic energy decreases as you go up hill
Potential energy increases as you go up hill
Answer:
The volume of 3200 kg of petrol is 4 m^3.
Yo sup??
magnitude of original vector is 5 units.
angle made with x axis is 67°
horizontal component=5*cos67°
=5*0.4
=2 units (approx)
Therefore the correct answer is option B
Hope this helps
