Answer:
b) 6
Explanation:
Given
v(t)=3t²+6t
X(0) = 2
X(1) = ?
Knowing that
v(t)=3t²+6t = dX/dt
⇒ ∫dX = ∫(3t²+6t)dt
⇒ X - X₀ = t³ + 3t²
⇒ X(t) = X₀ + t³ + 3t²
If X(0) = 2
⇒ X(0) = X₀ + (0)³ + 3(0)² = 2
⇒ X₀ = 2
then we have
X(t) = t³ + 3t² + 2
when
t = 1
X(1) = (1)³ + 3(1)² + 2
X(1) = 6
Answer:
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No. Speed is speed and force is force.
d is diameter, A is the area and v is the speed ,
Area*speed is the quantity of air flowing per second.
A v = πd² v/4 = 1.5 liters /second = 0.0015 m^3/s
v = 0.0015*4/(π*0.0074²) =35 m/s
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2
Using Bernoulli equation
ρ v₂²/2 = hdg where ρ is density of air and d is density of water
h = ρ v₂²/ (2dg) = 1.25*34.8769² /(2*1000*9.8) =0.07758 = 0.078 m
Answer:
Multiply the length value by 1e+6