Reference no: EM13704627
1. What is the kinetic energy (in Btu) associated with a 300 gm hockey puck flying at 120 mph?
2. Assuming an ideal gas, calculate the specific volume in the appropriate units for:
a. N2 at 500 kPa and 900 K
b. Neon at 8 kPa and 250 K
c. Air at 100 kPa and 298 K
3. Calculate the specific enthalpy change (in the appropriate units) for the following ideal gas processes by first using an average cP and then by using the ideal gas tables.
a. CO2 at 2000 kPa goes from 500 K to 1300 K
b. CO2 at 2000 kPa goes from 500 K to 600 K
c. Air at 320 kPa and 330 K goes to 80 kPa and 330 K
4. Carefully draw the following graph using air as an ideal gas.
a. temperature versus pressure showing lines of constant specific volume and specific enthalpy
5. Calculate the entropy change for N2 as it goes from 250 K and 1000 kPa to 1300 K and 60 kPa.
|
Determine the new level h of the water
: Water in the container is originally at a h=3 ft. If a block having a specific weight of 50 ib/ft^3 is placed in the water, determine the new level h of the water. The base of the blocks is 1 ft square, and the base of the container is 2 ft square.
|
|
Isentropic efficiency of turbine-thermal efficiency of cycle
: A simple Rankine cycle with water as the working fluid operates between the pressure limits of 15 MPa in the boiler and 100 kPa in the condenser. Saturated steam vapor enters a turbine. Irreversibilities in the turbine cause the turbine to be 70 perc..
|
|
Find the adiabatic flame temperature for methane burned
: Find the adiabatic flame temperature for methane burned in: (a) 110% theoretical air and (b) 110% theoretical oxygen enriched air (30% O2, 70% N2 by volume) Please explain in DETAIL
|
|
Find the pressure on the nose of the submarine
: A submarine moves steadily through water at a depth of 350m and a speed of 5 m/s. a) find the static pressure p far away from the submarine at the 350m depth 2) find the pressure on the nose of the submarine.(kpa)
|
|
Calculate the specific enthalpy change
: What is the kinetic energy (in Btu) associated with a 300 gm hockey puck flying at 120 mph? Assuming an ideal gas, calculate the specific volume in the appropriate units for: Calculate the specific enthalpy change (in the appropriate units) for the f..
|
|
Measured force data for exercise problems
: How does this estimate differ from the estimates made in problem 4.11? Repeat for columns 2 and 3. Why do the estimates vary for each data set? Discuss these outcomes in terms of what you might expect from finite statistics if these are measuring the..
|
|
Calculate the total work output of the turbine
: A steam power plant for an automotive vehicle is proposed as shown. The boiler has a volume of 50 litres and initially contains 90% liquid and 10% vapor by volume at 100kPa. The burner is now turned on and when the pressure in the boiler reaches 700k..
|
|
Consider a homogenous isotropic solid
: Consider a homogenous isotropic solid. Assume that all relevant properties do not depend on temperature and position within the solid. Derive the heat conduction (diffusion) equation in The rectangular coordinate system. Cylindrical coordinate system..
|
|
Consider a saturated clay layer
: Consider a saturated clay layer of 4 m thickness on top of a deep layer of stiff sand. The clay has an initial porosity n=40%. Following a lowering of the water level in the clay, the clay porosity is reduced to 30%. What is the change of thickness S..
|