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LS through hw7 3/06/06 Answers assignment 1 Moran and Shapiro text problems. 1.2) drawings of system required. No numeric answers 1.12) a) 9.5m/s2 b). 98.1N ft 1.21) -18.4 2 s 1.31) V2 = 2.905m3 1.37) 14.379lbf/in2 lbf 1.
KNOWN: Dimensions and initial temperature of stone mix concrete beam. Ambient temperature and
convection heat transfer coefficient. Properties of aggregate beam.
FIND: Centerline temperature after t = 6 hours for each beam.
T = 500
KNOWN: Long plastic rod of diameter D heated uniformly in an oven to Ti and then allowed to
convectively cool in ambient air (T, h) for a 3 minute period. Minimum temperature of rod should
not be less than 200C and the maximum-minimum tempera
KNOWN: Stack of circuit board-pressing plates, initially at a uniform temperature, is subjected by
upper/lower platens to a higher temperature.
FIND: (a) Elapsed time, te, required for the mid-plane to reach cure temperature when platens are
KNOWN: Thickness and initial temperature of copper sheet. Dependence of the convection heat
transfer coefficient on sheet temperature.
FIND: Time required to reach sheet temperature of T = 102C.
Ti = 118C
KNOWN: Diameter and initial temperature of nanostructured ceramic particle. Plasma temperature
and convection heat transfer coefficient. Properties and velocity of particles.
FIND: (a) Time-in-flight corresponding to 30% of the particle mass
FACULTY OF ENGINEERING AND ARCHITECTURE
MECHANICAL ENGINEERING DEPARTMENT
ME 211 THERMODYNAMICS I
HW # 2
1) One-fourth kg of a gas contained within a pistoncylinder assembly undergoes a
constant-pressure process at 5 bar begin