A swimming pool has dimension 20m × 3m. When it is filled water, what is the force on bottom?
5.880 × 106N
0
4.41 × 105N
8.82 × 105N
Density of substance decrease when temperature
increases
decreases
no change
1st increase then decrease
The density of Cu is 8.9 gcm-3. Its RD is
0.89
8.9
0.089
.0089
1 Pa =
1 Nm
1 N
1 Nm-2
0.5 Nm-2
Which acid is used in an acid battery hydrometer?
H2SO4
Hcl
HNO3
NO3
Pick out the correct expression.
P = FA
P = F + A
Larger the volume of body submerged in fluid, the upthrust will be
Same
Less
Greater
Cannot predict
For a floating body, its weight w and upthrust FB on it are related as
W > FB
W < FB
W = FB
Nothing can be said
The gravitational unit of thrust in CGS system is
N
gf
kgf
dyne
A cube of each side 5cm is placed inside a liquid. The pressure at the centre of one face of cube is 10Pa. The thrust exerted by liquid on face is
2 × 10-2N
2 × 10-3N
2.5 × 10-2N
2N
