There is a piston-cylinder assembly with a mass of 50 kg and a surface area of ​​0.01 m2. The mass of air is 5 g. The initial volume of air is 5 liters. Atmospheric pressure is 100 kPa. As the specific internal energy of the air decreases by 260 kJ/kg the volume of air is also gradually decreasing to 0.002 m3. Ignore friction that is between the piston and the c

Q: 2: A piston-cylinder assembly contains air at 210 kPa and occupies a volume of 0.01m'. The piston is…

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Q: How does the diameter of an air cylinder affect the force output of a cylinder?   If the diameter of…

A: Consider F as the force output, P as the air pressure applied, and A as the piston area or the area…

Q: A commercial Boeing 737-800 airplane could seat 160 passengers. It takes off with to weight of…

A: Given:Total weight of passengers, m=175000 lbsCruising speed of the plane, v=550 mphAltitude of the…

Q: A block with a mass of 100 kg slides down an inclined surface that is 5 m long and makes an angle of…

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Q: What is the net force on a ball of mass 20kg and volume of 0.3 m3 when it is submerged under water?

A: Given data,  Mass = 20 kg  V=0.3 m³  Fluid is water,  So density =d=1000 kg/m³

Q: A sample of helium gas is contained in a cylinder fitted with a movable piston. Calculate the change…

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Q: A clock is powered by a 1.54 kg mass hanging on a chain passing over and engaging a 4.21-cm diameter…

A: The mechanism will provide rotation to the pulley. Now, pulley's rotational energy will be converted…

Q: The velocity (in m/s) of the block attained after 10 seconds is

A: Given data;  N=mg=200 N(fs)max=μsN=0.4×200=80 NUpto 8 secP=10t=no motionfrom 8 sec to 10 secfk=μkN…

Q: An amount of 0.75kg of gas is contained in a tank, the volume of which is 2ft³. If the internal…

A: Given data:- mass of gas = 0.75 kg  the volume of which =2ft3 the internal energy decreases =30kJ…

Q: Calculate the required power in watts

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Q: A lift in a hotel carries six people with a mass of 750 kg and a total mass of 450 kg. How many…

A: Given data: The mass of all six people in the elevator is; m1 = 750 kg. The mass of the elevator…

Q: 1. It takes 20 seconds to lift a 1600-kg car and the underlying 300-kg platform of a hydraulic lift…

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Q: Prove that Rmole =8.314 kJ/kg K

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Q: A poundal is the force required to accelerate a mass of 1 Ibm at a rate of 1 ft/s2, and a slug is…

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Q: A spring balance is used for measurement of weight. At standard gravitational acceleration it gives…

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Q: A frictionless piston-cylinder device contains 100 kg of saturated liquid refrigerant-134a. If the…

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Q: What is the mass of an object that falls freely under the influence of gravity from an elevation of…

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Q: Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…

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Q: What is the difference between pound-mass and pound-force?

A: The main difference between pound-mass and the pound-force is that one is the unit of mass, and…

Q: What is the kinetic energy of an 1800 kg car moving at 25 m/s?

A: Given data : Mass m=1800 kg Velocity V=25 m/s   Required : Kinetic energy

Q: Two pistons of a hydraulic lift have diameters of 60 cm and 5 cm. Determine the force exerted by the…

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Q: A 550 BHP diesel engine uses fuel oil of 30°API gravity and fuel consumption of 0.65 lb/BHP-hr. For…

A: To Find :  The minimum value of the cubical day tank in cm3. Given : The ambient temperature is…

Q: A wooden block(s) of mass M= 400 gram and m = 100 gram is the total mass just starts to move when…

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Q: A 550 BHP diesel engine uses fuel oil of 30°API gravity and fuel consumption of 0.65 lb/BHP-hr. For…

A: Given data P=550 BHPBSFc=0.65 lb/BHP-hr Here, P is the power and BSFc is the mass flow rate or fuel…

Q: What power in KW is required to lift a 1500 kg mass a distance of 80 m in 14 sec? The correct answer…

A: m = 1500 kg X = 80 m t = 14 sec We need to find Power

Q: Calculate the tension needed on the exterior side of the mitral valve leaflet to maintain the valve…

A: In fluid mechanics, there are two types of flow laminar and turbulent. The flow which doesn't have…

Q: The weight of an airplane varies with the cube of the plane’s length. The lift generated by an…

A: Given: Weight of an airplane varies with the cube of the plane's length: W∝L3 W = k×L3 Lift…

Q: A 10 kg block, as seen in figure 1, is dropped from a certain height onto an uncompressed spring…

A: Given:m=10 KgK=622.6 N/mF=2.5 Nx=1 m

Q: clock mechanism. Calculate the energy in Joules has been put into the clock

A: Given data:  Mass powering the clock = 3.4kg Pulley diameter = 3.01cm Weight drops = 2.088m Energy…

Q: At a temperature of 400 F, find the size of the orifice of the pressure relief valve to be used in a…

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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.