A river flows from south to north at 5.4 km/hr. on the west bank of this river, a boat launches and travels perpendicular to the
1 answer:
The motion of the boat is basically a uniform motion on both directions, north-south (NS) and east-west (EW), with two constant velocities: 
and 
.
From the law of motion on the EW direction we can find the total time of the motion:
since we know
, we find
and then, we can find how far the boat went on the NS direction during this time:
From the law of motion on the EW direction we can find the total time of the motion:
since we know
and then, we can find how far the boat went on the NS direction during this time:
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Answer:
The pressure at point 2 is
Explanation:
From the question we are told that
The speed at point 1 is
The gauge pressure at point 1 is
The density of water is
Let the height at point 1 be then the height at point two will be
Let the diameter at point 1 be then the diameter at point two will be
Now the continuity equation is mathematically represented as
Here are the area at point 1 and 2
Now given that the are is directly proportional to the square of the diameter [i.e ]
which can represent as
=>
where c is a constant
so
=>
=>
Now from the continuity equation
=>
=>
Generally the Bernoulli equation is mathematically represented as
So
=>
substituting values