A pilot records the atmospheric pressure outside its plan...
A pilot records the atmospheric pressure outside its plane as 63cm of Hg while a ground observer records a reading of 75cm of Hg for the atmospheric pressure on the ground. Assuming that the density of the atmosphere is constant, calculate the height of the plane above the ground. (Relative density of Hg = 13.0 and that of air = 0.00013)
1200m
6300m
7500m
13800m
Correct answer is A
Difference in pressure = 75 - 63
= 12cmHg
pressure = hge
difference in height = 1210×0.0001313
= 1200m
An electron of mass m and charge ◻ enters a uniform electric field between two metal plates P...
When two waves are superimposed on each other, the following occurrences are possible, except ...
A cell of e.m.f. 1.5v is connected in series with a resistor of 3Ω. A high resistance voltm...
A cell can supply currents of 0.60 A and 0.30 A through a 2.0 ω and a 5.0 ω resistor res...
The molecular structure of a liquid is such that ...
Which of the following is NOT correct? i. the pitch of a sound note depends on the frequency of v...
Arrange the following radiations in order of increasing ionization of air. I. Alpha Il. Gamma IIl...