Calculate the absolute pressure at the bottom of a lake a...
Calculate the absolute pressure at the bottom of a lake at a depth of 32.8 m. Assume the density of the water is 1 x 10^3 kgm-3 and the air above is at a pressure of 101.3 kPa.
[Take g = 9.8 ms-2]
422.7
220.14
464.53
321.74
Correct answer is A
h=32·8m, p= 1×103kgm−3
g=9·8 ms−2 , Pa=101·3KPa
PT= ?
P=hpg
⇒32·8×1×103×9·8=321440 Pa
⇒321·44KPa
⇒ PT =321.44+101.3
;PT=422·7KPa
Longitudinal waves do not exhibit ...
Which of the following is true of the loudness of sound? It ...
Which of the following is not an evidence of the particle nature of matter? ...
In a good thermos flask, heat loss is reduced through the following features EXCEPT? ...
In an A.C circuit, the ratio of r.m.s value to peak value of current is ...