Related Questions

In a weight-lifting competition, the total weight of Joe's two lifts was 750 pounds. Twice the weight of his first lift was 300 pounds more than the weight of his second lift. What was the weight, in pounds, of his first lift?
A 225
B 275
C 325
D 350
In a weight -lifting competion, the total weight of Jabir's two lifts was 750 pounds. Twice the weight of this lift was 300 pounds more than the weight of his secnd lift. What was the weight , in pounds, of his first lift?
A 225
B 275
C 325
D 350
If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is moving downwards, the acceleration of the lift, is
A $$\frac{{\text{g}}}{2}$$
B $$\frac{{\text{g}}}{3}$$
C $$\frac{{\text{g}}}{4}$$
D $$\frac{{\text{g}}}{5}$$
The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is
A 0.5
B 1
C 2
D 0.33
In an incompressible flow of fluid, the fluid
A Temperature remains constant
B Compressibility is greater than zero
C Density does not change with pressure & temperature
D Is frictionless
The internal energy of an incompressible fluid depends upon its
A Pressure
B Temperature
C Both A & B
D Neither A nor B
In which of the following the friction drag is generally larger than pressure drag?
A a circular disc or plate held normal to flow
B a sphere
C a cylinder
D an airfoil
The ratio of wall drag to total drag in the Stoke's law range is
A 0.5
B 1
C $$\frac{1}{3}$$
D $$\frac{2}{3}$$
In which of the following body shapes, the pressure drag is large compared to the friction drag?
A Stream line body
B Two dimensional body
C Bluff body
D None of these
গ্রেডিয়েন্ট মধ্যবিন্দুর অবস্থান নির্ধারণ করা যায়-i. নির্ধারণীসূচক সংখ্যা লিখেii. আইকনটি ডানে বায়ে drag করে iii. মুক্ত টুলের সাহায্যে drag করেনিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i, ii ও iii

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