PHY 205 Midterm: PHY 205 UMiami Fall08 1
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V (cid:1856)(cid:1868)(cid:3404)(cid:2025)(cid:1859)(cid:1856)(cid:1877); if is constant: p p gh. A large, sealed container with area a and height l is filled with water (density ) up to level y. At some point, however, water stops coming out of the container. Find the level yo at which this happens. 2: (cid:3041)(cid:3019)(cid:3021) (cid:3002)(cid:4666)(cid:3013)(cid:2879)(cid:3052)(cid:4667, (cid:3496)(cid:2870)(cid:4672) (cid:3289)(cid:3267)(cid:3269)(cid:3250)(cid:4666)(cid:3261)(cid:3127)(cid:3300)(cid:4667)(cid:2879)(cid:3043)(cid:3290)(cid:2878)(cid:3096)(cid:3034)(cid:3052)(cid:4673) (cid:3096) (cid:3096)(cid:3034) (cid:3397)(cid:3495)(cid:4672)(cid:3043)(cid:3290)(cid:2878)(cid:3096)(cid:3034)(cid:3013, (cid:2869)(cid:2870) (cid:4678)(cid:3398)(cid:3043)(cid:3290)(cid:2878)(cid:3096)(cid:3034)(cid:3013) Two rods with same length d and same sectional area a are made of copper (thermal conductivity kc) and aluminum (thermal conductivity ka). The two rods are connected in series between two systems, one consisting of a mass m of ice at t1=0o c (latent heat l), the other maintained at a constant temperature t2>t1 (see figure). _____________________________________________________________________ (cid:4666)(cid:3038)(cid:3278)(cid:2878)(cid:3038)(cid:3276)(cid:4667) : (cid:3038)(cid:3278)(cid:3021)(cid:3117)(cid:2878)(cid:3038)(cid:3276)(cid:3021)(cid:3118, (cid:1863)(cid:3030)(cid:1863)(cid:3028)(cid:3002)(cid:3031)(cid:4666)(cid:3021)(cid:3118)(cid:2879)(cid:3021)(cid:3117)(cid:4667) (cid:4666)(cid:3038)(cid:3278)(cid:2878)(cid:3038)(cid:3276)(cid:4667, (cid:2869)(cid:3013)(cid:1863)(cid:3030)(cid:1863)(cid:3028)(cid:3002)(cid:3031)(cid:4666)(cid:3021)(cid:3118)(cid:2879)(cid:3021)(cid:3117)(cid:4667) (cid:4666)(cid:3038)(cid:3278)(cid:2878)(cid:3038)(cid:3276)(cid:4667), (cid:3013)(cid:3040)(cid:3031)(cid:4666)(cid:3038)(cid:3278)(cid:2878)(cid:3038)(cid:3276)(cid:4667) (cid:3002)(cid:3038)(cid:3278)(cid:3038)(cid:3276)(cid:4666)(cid:3021)(cid:3118)(cid:2879)(cid:3021)(cid:3117)(cid:4667). Remember that pressure decreases as altitude increases: if the pressure at sea level is po, use the result from part b) to find an expression for the atmospheric pressure as a function of altitude y.
