In what sense did the flappers dressand dance represent a display of freedom
1 answer:
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Answer:
The terminal speed is 74.833 m/s
Explanation:
The drag force is equal to square of speed:
Fdrag = k*v²
According Newton`s law:
Fnet = m*a
m*g - k*v² = m*a
If terminal speed, the net force is zero.
Answer:
27.22 F.
Explanation:
T ( t ) = T₀ + ( T₁ - T₀)
T ( t ) = 41 , T₀ = 0 , T₁ = 140 , t = 15
Put these values in the equation above
41 = ( 140 - 0 ) e^{-15k}
41/140 = e ^{-15k}
(41/140)^{1/3} = e ^{-5k}
Let after 20 minutes temperature becomes T
T = 0 + 140 e^{-k20}
T / 41 = e^{-5k }
= (41/140)^{1/3}
T = 41 X (41/140)^{1/3}
= 27.22 F.