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Heat transfer from the back surface of the board is negligible. What is the average surface temperature of the chips?
A 5-liter cylinder contains R-12 at 20degreesC with a quality of 90%. Find the masses of the saturated liquid and of the saturated vapor in the cylinder.
Calculate the heat flux vector at a few points on the plate and draw the heat flux vectors on a schematic of the plate (in the x-y plane).
If it is 98 degrees F outside and 78 degrees F inside the house, what is the heat flux through the window? The window is 2'x4'. What is the heat rate through the window (not counting solar gain) &nbs
The collar is in equalibrium at A and is given a slight push for get moving. Determine the velocity of the collar (a) as it passes through B (b) as it passes through C.
Assuming that the shear modulus of elasticity is G=80GPa, determine the maximum torque Tmax that can be applied to the shaft.
If the convection heat transfer coefficient is 16 W/m2-oC and the emissitivity of the surface is 0.74, determine the total rate of heat transfer from the surface.
Determine the moment of that force about the center of the shaft. Use the (a) perpendicular lever arm and (b) moment components method.
They agreed to buy his contract by paying him the equivalent present sum, computed using 12% interest rate. How much will the coach receive?
Find average piston velocity in each direction ( between limiting positions) for an off-set slider crank mechanism.
Calculate the free-stream Mach number at which the airplane is flying for each of the three different conditions: Pitot pressure = 1.22 Times 105 N/m2.
A tensile test of 70-30 brass produced the following data (none of these readings was taken at maximum load). Calculate the diameter of the specimen at the instant of maximum load.
Determine the exit area of each pipe if the average velocity is Ve,1=15m/s for the steam and Ve2 =0.1m/s for the liquid respectively.
What is the total gain or loss of the building for the day in Btu. Than determine the average heat gain for the day in Btu/h.
Determine the boundary or closed-system work of the gaseous system as the volume decreases from 2.6 to 1.6m3.Notice the pressure is given in bars.
An engineering stress of 291 MPa causes an engineering strain of 0.030 in a cylindrical 304 stainless steel rod. What is the engineering stress (MPa) in the rod when supporting the load?
Calculate the mass of the fluid present c. Determine the value of n in the first process d. Compute the net work of the cycle.
Hang a weight (F) from the middle of a horizontal wire of length 2L, attached on both sides. Find an equation that relates the force to the change in height (delta h) of the weight.
The air is then heated to the final state of 0.5 m3 and 800 kPa. a. Sketch the process on a p-V diagram b. Determine the total work done by the air c. Determine the work done against the spring.
You want to find the change in length of a prosthetic leg given a certain amount of force applied. You took a picture of the prosthetic leg and made some rough measurements on the computer.
The balloon material is such that the pressure inside is always proportional to the square of the diameter. Determine the work done when the volume of the balloon doubles as a result of heat transfe
For 8000 hours of operation annually, determine, in $, (a) the value of electricity generated per year (b) the annual fuel cost.
A hyperbolic earth departure trajectory has a perigee altitude of 300 km and a perigee speed of 15km/s. Calculate the hyperbolic excess speed.
A rocket launched from the surface of the earth has a speed of 8.85 km/s when powered flight ends at an altitude of 550 km. The flight path angle at this time is 6 degrees. Determine the eccentrici
An unmanned satellite orbits the earth with a perigee radius of 7000km and an apogee radius of 70,000km. Calculate the eccentricity of the orbit.