Statements given below are incorrect.Write the correct statements.
a)In SI,unit of moment of force is joule- metre ( Jm).
b) The less force is needed to
open a door by pushing at the
side closet from the hinge.
c)The piston valve of a lift pump opens in both direction.
d)The pressure of enclosed mass of a gas increases with the increase in volume.
e)When a single force is used to turn an object about its axis,the moment of that force is known as a couple.
f)On higher altitudes the atmospheric pressure is more than 76cm of mercury.
g)It is the force of gravitation which turns small mass of mercury in silvery spheres.
h)Stones are carried to long distance by fast flowing river, because the stones weigh less in air and more in water.
i) The atmospheric pressure at sea level is 1,00,000 newtons.
j) The lift pump will lift underground water only,if the depth of underground water is more than 10.34m.
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TO THE
PRACTICAL QUESTIONS AND PROBLEMS
CONTAINED IN
THE FOURTEEN WEEKS COURSES
Physiology, Philosophy, Astronomy, and
Chemistry (old and New Edition).
BY
J. DORMAN STEELE, PH.D., F.G.S.,
AUTHOR OF THE FOURTEEN WEEKS SERIES IN PHYSIOLOGY, PHILOSOPHY,
CHEMISTRY, ASTRONOMY, AND GEOLOGY.
A. S. BARNES & COMPANY,
NEW YORK AND CHICAGO.
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