Answer:
v₀ = 49.5 miles / h
Explanation:
We can solve this exercise with kinematics in one dimension
v² = v₀² - 2 a d
let's apply this equation to the initial data, the fine velocity zero
0 = v₀² - 2 a d
a = v₀² / 2d
in the second case the distance is half (d´ = ½ d), the acceleration of the vehicle is the same, we look for the initial speed
0 = v₀´² - 2 a d´
v₀´² = 2 a d = 2 (v₀² / 2d) d´
v₀´ = v₀ √ 1/2
let's calculate
v₀´ = 70 ra 0.5
v₀ = 49.5 miles / h
Answer:
Protons and Neutrons are found in the nucleus D would be your answer
Explanation:
Permeability is a measure of how fast a liquid can pass
through a layer of solid. In this case, the lesser the time, the more permeable
the solid is. Or the other way around, the bigger the time, the less permeable
the solid is. Therefore the answer in this problem is:
<span> A. Soil W</span>
Answer:
E = (Ay-2Bx) i ^ + (Ax + C) j ^ + 0 k ^ and (-C / A i ^ + 2BC / A2 j ^)
Explanation:
The electric field the electric potential are related through the least gradient
E = -ΔV = - dV / dx i^
Let's perform the calculations
E = dB / dx i ^ + dV / d and j ^ + dV / dz k ^
dv / dx = A and - B 2x
dv / dy = Ax + C
dv / dz = 0
E = (Ay-2Bx) i ^ + (Ax + C) j ^ + 0 k ^
Where is E = 0
Ex = 0
Ay -2Bx = 0
y = 2B / A X
Ey = 0
Ax + C =
x = -C / A
Ez = 0
For the total electric field to be steel the two components must be zero simultaneously
y = 2B / A (-C / A)
y = 2B C / A2
The coordinates of the point are (-C / A i ^ + 2BC / A2 j ^)