Mechanical Engineering Answers

Model equation for contaminant concentration in a space and apply to the following. A person breathes out CO2 at the rate of 0.3L/min. The concentration of CO2 in the incoming ventilation air is 400 ppm. It is desired to hold the concentration in the room below 1000ppm. Assuming that the air in the room is perfectly mixed, what is the minimum rate of air flow is required to maintain the desired level as per ASHRAE standard 62-1999?. If the same room is designed to occupy 6 persons determine the total amount of CO2 per second breath out and amount of incoming air to meet the ASHRAE standard 62-1999 desired comfortable ambient.

At a pressure of 100 psia and 400 deg F, the specific volume of steam is 4.934 cu. ft/lb, and the specific enthalpy is 1227.5 BTU/lb. Find the internal energy at the given state, BTU/lb. attach solution.

air enters a compressor with a density of 1.2 kg/m3 at mean velocity of 4 m/s in the 6 cm x 6 cm square inlet duct. air is discharged from the compressor with a mean velocity of 3 m/s in a 5 cm diameter circular pipe. determine the mass flow rate and the density at outlet?

you see a sudden flash light,then 6 seconds later you hear the thunder.take the speeds of sound and light as 340ms^-1and3*10^8ms^-1,respectively.how far away was the lightining strike?

a car accelerates with a constant acceleration of 1.2ms^-1 along a long straight road.how long does it take the car to accelerate from 100kph to 110kph,and how far does it travel while doing so?

janes brother andrew leaves home for school at 8:00 am.he walks at 3.3kph.at 8:20 am jane discovers that andrew has left his homewirk at home .she decides to follow him on her bicycle and give him his homework,but she wants to be back home in time for an online test at 9:00 am .what is the minimum constant speed at which she needs to ride?

A car with a mass 700 kg accelerates uniformly from rest to a velocity of m s-1 in a time of 10 s. the frictional resistance to the motion of the vehicle is assumed to be constant throughout at 0.5 kN. calculate the force accelerating the car.

What is y groove crackability test ?

a transmission shaft supporting two pulleys A AND B and mounted between two bearing C1 and C2 . power is transmitted from pulley A&B .the shaft is made of plain carbon steel 45c8 syt is 380 & sut is 600 the pulleys are keyed to the shaft . determine the shaft diameter the ASME code if Kb is 1.5 and Kt is 1.0 .also determine the shaft diameter on the basis of torsional rigidity if the permissible angle of twist between two pulleys is 0.5 degree and the modulus of rigidity is 79300N/mm^2. Forces are 2000 & 500N

I was wondering if I can get a hold of the solutions for Applied Thermodynamics for Engineering Technologists by EASTOP &McCONKEY fifth edition