The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m<sup>3</sup>, a = Cross-sectional area of jet in m<sup>2</sup> and V = Velocity of jet in m/s)

The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

A

$$\frac{{{\text{wa}}\left( {{\text{V}} - {\text{v}}} \right)}}{{2{\text{g}}}}$$

B

$$\frac{{{\text{wa}}\left( {{\text{V}} - {\text{v}}} \right)}}{{\text{g}}}$$

C

$$\frac{{{\text{wa}}{{\left( {{\text{V}} - {\text{v}}} \right)}^2}}}{{2{\text{g}}}}$$

D

$$\frac{{{\text{wa}}{{\left( {{\text{V}} - {\text{v}}} \right)}^2}}}{{\text{g}}}$$

What is the condition for a tree to be weight balanced. where a is factor and n is a node? >= a*weight and weight >= a*weight. b) weight >= a*weight and weight >= a*weight. c) weight >= a*weight and weight >= a*weight. d) weight is a non zero

A

weight >= a*weight and weight >= a*weight.

B

n.left

C

n.left

D

n.left

The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle $$\theta $$ with the jet is

A

$$\frac{{{\text{waV}}}}{{2{\text{g}}}} \times \sin \theta $$

B

$$\frac{{{\text{waV}}}}{{\text{g}}} \times \sin \theta $$

C

$$\frac{{{\text{wa}}{{\text{V}}^2}}}{{2{\text{g}}}} \times \sin 2\theta $$

D

$$\frac{{{\text{wa}}{{\text{V}}^2}}}{{\text{g}}} \times \sin 2\theta $$

A jet of water issues from a nozzle with a velocity of 10 m/s and it impinges normally on a fixed flat plate. The cross sectional area of the jet is 0.02 m2 and the density of water is 1000 kg/m3 . What is the force developed on the plate?

A

2000 N

B

400 N

C

4000 N

D

200 N

Weight of Arun is 4/7 of the weight of Bablu. Weight of Bablu is 1/2 of the weight of Ram. Weight of Ram is 4 times of the weight of Deep. Weight of Deepis 1/9 of the weight of Ankit. Whose weight is more than the weight of Deep but less than the weight of Bablu?

A

Ankit

B

Arun

C

Ram

D

Deep

There are seven persons - A, B, C, D, E, F and G. They have different weights. The weight of second heaviest person is 185 kg and the weight of second lightest person is 85 kg. Sum of weight of C and D is 290 kg. Only Three persons have more weight than D. E is heavier than both F and G but F is not lightest. The weight of A is 250 kg. Sum of weight of F and G is 135 kg. B is heavier than both C and D but C is not lightest. The weight of D is 140 kg. The weight of E is obtained from removing weight of C from weight of A. Who is the Fourth lightest person?

A

C

B

G

C

B

D

There are seven persons - A, B, C, D, E, F and G. They have different weights. The weight of second heaviest person is 185 kg and the weight of second lightest person is 85 kg. Sum of weight of C and D is 290 kg. Only Three persons have more weight than D. E is heavier than both F and G but F is not lightest. The weight of A is 250 kg. Sum of weight of F and G is 135 kg. B is heavier than both C and D but C is not lightest. The weight of D is 140 kg. The weight of E is obtained from removing weight of C from weight of A. Who is the fifth heaviest person?

A

E

B

D

C

G

D

A

During a class experiment, a teacher took two objects and immersed them in water. She recorded the readings using a spring balance as shown below: Object Wt. of Stone in Air (Newton) Wt. of Stone in Water (Newton) Weight of Liquid Displaced (Newton) Buoyant Force acting on body (Newton) A 92 X 16 Y B Q 70 Z 10 Which of the following is correct?

A

X - 108, Y - 108, Z - 10, Q - 80

B

X - 108, Y - 16, Z - 80, Q - 80

C

X - 76, Y - 16, Z - 10, Q - 80

D

X - 76, Y - 16, Z - 80, Q - 10

The average weight of a group of 10 girls is 48 kilograms. If 2 girls R and S, replace by P and Q then the new average weight is 46 kg. The weight of P is equal to the weight of Q and the weight of R is equal to the weight of S, another girl T joins the group and the new average weight of the group becomes 46 kg. The weight of T is equal to the weight of P. What is the weight (in kg) of R?

A

50

B

56

C

54

D

52

The average weight of a group of 12 girls is 48 kg. If 2 girls R and S replace P and Q, the new average weight becomes 46 kg. The weight of P = the weight of Q. The weight of R = the weight of S. Another girl T, is included in the group and the new average weight becomes 46 kg. The weight of T = the weight of R. What is the weight of P (in kg)?

A

56

B

58

C

54

D

50

The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m³, a = Cross-sectional area of jet in m² and V = Velocity of jet in m/s)

Related Questions

The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m2 and V = Velocity of jet in m/s)

Related Questions

The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m³, a = Cross-sectional area of jet in m² and V = Velocity of jet in m/s)