Answer:
The flow speed at 2.6 cm diameter pipe is 1.2
Explanation:
Given :
Speed at 4 cm diameter pipe
Area of 4 cm diameter pipe
Area of 2.6 cm diameter pipe
From the equation of continuity,
Find the speed at 2.6 cm diameter pipe,
Therefore, the flow speed at 2.6 cm diameter pipe is 1.2
Answer:
8.1 N-m
Explanation:
We are given that
Mass=m=4.9 kg
Length=L=3.1 m
We have to find the magnitude of torque (due to the force of gravity).
We know that
Using the formula
Hence, the magnitude of torque =8.1 N-m
By Boyle's law:
P₁V₁ = P₂V₂
70*8 = P<span>₂*4
</span>P<span>₂*4 = 70*8
</span>
P<span>₂ = 70*8/4 = 140
</span>
P<span>₂ = 140 kiloPascals.</span>
It would decrease because the frequency is decreasing