Question

oil tank that has a rectangular base of dimensions 2.4m by 1.5m.
oil
depth of oil
1.5 m
1.5m
2.4m
Fig. 3.1
The tank is filled with oll of density 850 kg/mº to a depth of 1.5m.
(a) Calculate
(1) the pressure exerted by the oil on the base of the tank
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Answer 1

Answer:

Oil is carried through pipes from one place to another place. It is made sure that the flow of

oil in pipes should be steady so that there is no danger of the damage of the pipe. Assume that an

oil flows through a horizontal pipe of length 2.0 m and radius 50 cm. The amount of the oil

collected at one end of the pipe is 5.0 x 10⁻³ kg/s. Assume that density of oil is 0.5 x 10³ kg/m³

and coefficient of viscosity of oil at 30 °C is 0.02 Pa-s.

Based on the above facts, answer the following questions

(A)The volume of the oil flowing per second is

a) 1x 10⁻⁶ m³ /s

b) 1x 10⁻⁵ m³ /s

c) 1x10⁻⁴ m³ /s

d) 1 m³ /s

(B) The velocity of flow of oil in the pipe is

a) 1.0 x 10⁻⁵ m/s

b) 1.3 x 10⁻⁵ m/s

c) 2.0 x 10⁻⁵ m/s

d) 2.3 x 10⁻⁵ m/s

(C) Pressure difference between the ends of the pipe is

a) 1.63 x 10⁻⁵ Pa

b) 2.63 x 10⁻⁵ Pa

c) 4 x 10⁻⁶ Pa

d) 6 x 10⁻⁶ Pa

(D) Reynolds number is

a) 0.00163

b) 0.0163

c) 0.163