1. A 20lbm box is on an air balloon. The balloon has diameter of 10m with air with density of 0.04 lbm/ft3. Considering only the masses involved on this problem and buoyant force of the balloon, find the acceleration of the balloon in ft/s2.
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1. A 20lbm box is on an air balloon. The balloon has diameter of 10m with air with density of 0.04 lbm/ft3. Considering only the masses involved on this problem and buoyant force of the balloon, find the acceleration of the balloon in ft/s2.
2. Derive the formula for the nonflow work in terms of P1,P2, V1 and V2 only for a process involving ideal gas as working fluid and described by PV^n which is constant.
3. The bottom of a 50mm diameter, 2mm thick metallic induction heater is 120C while its thermal conductivity is 60 W/m-C. The voltage and current flowing into the heater are 220V and 5A, respectively. Find the temperature at the top portion of the pan.
4. Determine the phase and required properties in the following. Indicate the steam table number and page number being used in your solutions.
a. P=3 MPa, y=30%. Find T, v, u, s and h
b. T= 150C, x=0%. Find P, V, u, s and h
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