Consider the Energy Equation as shown below. For a real system where P1 = P2 = 0, V, =V2 , and h, < h, which of the following conclusions must be true? V2 +hL 2g P1 + P2 +h, =z2+ Y Y 2g o zl>z2 O zl

Q: Еxample 1: دور لعحز For the force system shown below, determine all unknown reaction. لظام لقوة

A:

Q: Use Cramer's rule to determine the solution of the system (2 – k)æ1+kx2 = 4 kai+(3 – k)x2 = 3 300 lb…

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Q: The block-spring combination is stretched in the positive x direction a distance of 12.6 cm from…

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Q: The Helmholtz free energy of a liquid column that rises, due to surface tension, inside a…

A: Capillary action is the rise or fall of liquid in a tube when inserted in a liquid. Helmholtz Free…

Q: Dv 1 -+-V(v•v)-vx(Vxv) Dt at 2 where Dt +v.V is known as the "substantial derivative" operator = -

A: It is to be proved as, DvDt=∂v∂t+12∇v·v-v×∇×vWhere,DDt=∂∂t+v·∇

Q: What would be the maximum weight W of the block, shown n the following figure, so that the tension…

A: Correct ans is 22.32N

Q: The constants are evaluated using the boundary conditions.True or false?

A: The statement is true.

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.