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A pure copper sphere with a diameter of 3.0 cm is initially at uniform temperature of 50 °C. It is suddenly exposed to an airstream of 10 °C with h = 15 W/m2-°C. How long does it take the sphere temperature to drop to 25 °C?
a ball is released from the bottom of an elevator which is traveling upward with a velocity of 6fts. if the ball
a well-insulated heat exchanger is used to heat water cp 4.18 kjkgk from 300 k to 90degc with a mass flow rate of 3
a 1.5 inch thick steel plate and a 0.5 inch thick cast iron plate are compressed with 14- 20 unc grade 5 bolt and
determine the volume required to store 25kg of ethane at 320kpa and 35 degrees celsius. if the temperature rises to 65
you are an engineer in an electric-generation station. you know that flames in the boiler reach a temp of 1200 k and
A plane can fly 305 mph in still air. If it can fly 185 miles downwind in the same amount of time it can fly 120 miles upwind, find the velocity of the wind.
the 50-kg homogeneous smooth sphere rest on the 30 degree incline A and bears against the smooth vertical wall B. calculate the contact forces at A and B.
a tapered structural steel column with a circular cross-section varies linearly from a radius of 25 mm to 15 mm over a
a 13.2-N force P is applied to the lever which controls the auger of a snowblower. Determine the moment of P about A when alpha is equal to 30 degrees.
1. calculate the specific volume of carbon dioxide 10 degrees celsius and 80 quality?2. calculate the specific volume
basically a block is slid down from left side of the circle and when it reaches the middle of the bottom the speed of
Beam deflection at corner through centroid, Sometimes the term centroid throws me for a loop. So, how would I set this problem up?
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