Iv. Nm
Mass x Volume
N
The pressure exerted by a liquid:
is directly proportional to its density.
多。
is inversely proportional to its density.
doss not depend on its density.
equal to its density.
Density gquals :
Mass/volume
ii.
Force y Displacement
Volume/Mass
The pressure exerted by a liquid column of depth 2m on its conta
(Take g = 10 ms? and density = 800 kg m-3)
ií, 1.6 x 105 Nm-2
IL 1,6% 104 Nm 2
iv. 760 Nm-2
Atmospheric pressure:
i
increases as we go up from sea level.
iv.
vires
1.6 x 10² Nm 2
Der
decreases as we go up sea level.
V
lii
.
remains constant as we go up sea level.​

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?