Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

problem 1:

a) The pressure inside a droplet of water is 0.04N/cm2 greater than the atmospheric pressure. find out the diameter of the droplet. Take surface tension (water with air) = 81N/m.

b) A velocity profile of a flowing fluid over a at plate is parabolic and given by u = ay2+ by + c where a, b and c are constants. The velocity of fluid is 1.4m/s at 15cm from the plate. The plate is the vertex point of the velocity distribution. Find out the velocity gradients and shear stresses at y = 0, 8 and 15 cm respectively. Assume dynamic viscosity as 0.8 Ns/m2

problem 2: A rectangular lamina 3mx1m is held in water at a depth of 1.5m below the free water surface:

a) If the 3m height is vertical, determine the total pressure force on the lamina and depth of centre of pressure.

b) If 1m side lies in the vertical plane at the same depth, then find out the change in total pressure force acting and depth of centre of pressure.

c) Another circular lamina having same area of rectangle is also kept at 1.5m below the free water surface. Find the total pressure force acting on the circular lamina and centre of pressure.
 
problem 3:

a) prepare the units of the following terms in SI and MKS systems:

  • Mass density
  • Specific weight
  • Surface tension
  • Dynamic viscosity
  • Kinematic viscosity

b) describe:

i) How certain insects are able to walk on the surface of water?
ii) Why petrol evaporates more readily than water at ordinary temperature?
 
problem 4: A tank 1.5m x1.5m x1.5m is filled with water upto 0.5m height and remaining is filled with an oil of 0.8 specific gravity:

a) Determine total pressure force on one side of the tank and
b) Position of centre of pressure.
 
problem 5: Define the following terms:

  • Viscosity
  • Kinematic viscosity
  • Velocity gradient

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M93474

Have any Question? 


Related Questions in Mechanical Engineering

Name the two types of bolted joints and tell why theyre

Name the two types of bolted joints and tell why they're called that? What is the main mission of the bolts in any joint? What factor largely determines the behavior and life of a tensile joint? Why are bolted joints oft ...

One excited state of the sodium atom lies at 25 73986 cm1

One excited state of the sodium atom lies at 25 739.86 cm1 above the ground state, another lies at 50 266.88 cm-1 . Suppose they are connected by a perturbation equivalent in energy to (a) 100 cm -1 , (b) 1000 cm -1 , (c ...

We want to tighten an astm a193 bolt having 4-8 un threads

We want to tighten an ASTM A193 bolt having 4-8 UN threads and a yield strength of 96 ksi. The effective length of its body, Lbe, is 12 in.; that of its threads, Lse, is 4 in. We're going to control the buildup of preloa ...

1 concrete rocks and bone are strong in compression and are

1. Concrete, rocks, and bone are strong in compression and are usually designed for compressive loading. To test their strength in compression, what sort of test specimen would be useful? 2. Suppose that a downward force ...

Two small cubes of equal size but made of different

Two small cubes of equal size but made of different materials are stacked (as shown in the figure below), so they just fit between two rigid surfaces. The bottom cube is subjected to a uniform pressure p on each of its e ...

1 find the rotational partition function for

1. Find the rotational partition function for chloroacetylene gas (HCCCl) at 500 K. he rotational constant is B = 0.186 cm -1 2. The rotational partition function for a sample of carbonyl sulide (OCS) is found to be 25.0 ...

The following table gives averaged total energies for a

the following table gives averaged total energies for a series of Monte Carlo Ising model simulations at different temperatures. Calculate the approximate heat capacity of the system before and after the phase transition ...

1 how do the magnitudes of the biceps force b and joint

1. How do the magnitudes of the biceps force B and joint reaction J change if the total weight w of the forearm and hand are included in the analysis and are assumed to be uniformly distributed over the forearm length L? ...

If you could go back in time and be part of any engineering

If you could go back in time and be part of any engineering achievement in the past, what would you choose? Your choice must involve something that was accomplished before 1970, although it might still be in use today. Y ...

Introductionemployers are constantly asking for engineering

Introduction Employers are constantly asking for engineering graduates who have good team skills, are problem solvers and are good communicators. On top of that, engineers need to be creative and innovative. They have to ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen