Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type. 7.7 7.2 10.7 7.4 8.7 6.5 6.8 7.0
1 answer:
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Answer:
The air pressure in the tank is 53.9
Solution:
As per the question:
Discharge rate, Q = 20 litres/ sec =
(Since, 1 litre = )
Diameter of the bore, d = 6 cm = 0.06 m
Head loss due to friction,
Height,
Now,
The velocity in the bore is given by:
Now, using Bernoulli's eqn:
(1)
The velocity head is given by:
Now, by using energy conservation on the surface of water on the roof and that in the tank :
Answer:
a)Wt =25.68 lbf
b)Wt = 150 lbf
F= 899.59 N
Explanation:
Given that
m= 150 lbm
a)
Weight on the spring scale(Wt) = m g
We know that
Wt = 150 x 5.48/32 lbf
Wt =25.68 lbf
b)
On the beam scale
This is scale which does not affects by gravitational acceleration.So the wight on the beam scale will be 150 lbf.
Wt = 150 lbf
If the plane is moving upward with acceleration 6 g's then the for F
F = m a
We know that
a=6 g's
So
F = 90 x 9.99 N
F= 899.59 N