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A steel ball (specific heat = 0.46 kJ/kgK. and thermal conductivity = 35 W/mK) having 5 cm diameter and initially at a uniform temperature of 450oC is suddenly placed in a control environment in which the temperature is maintained at 100oC.
Calculate the time required for the balls to attained a temperature of 150oC. Take h = 10W/m2K.
a solid cylinder of mass m 5 kg and radius r 20 cm is mounted on a frictionless horizontal axle over a well. a rope
a uniform sphere is projected without rotation at speed v0 up an inclined plane the makes an angle theta with the
A 1200 MW power plant has a thermal efficiency of 39%. Find: (a) the rate of heat addition to the cycle (b) the rate of heat rejection from the condenser [(a) 1.05 x 10^10 Btu/hr; (b) 6.4 x 10^9 Btu/hr]
Derive a differential equation for predicting the capsule temperature as a function of time. Solve this equation to obtain the temperature as a function of time in terms of capsule parameters and its initial temperature Ti.
After the initial cleanup effort at Three Mile Island, approximately 400,000 gallons of radioactive water remained in the basement of the containment building of the Three Mile Island Unit 2 nuclear plant. The principal sources of this radioactivity ..
jet-type pumps are sometimes used for special purposes such as to circulate the flow in basins in which fish are being
a 150mm diameter shaft supporting a load of 10kn has a speed of 1500rpm. the shaft runs in a bearing whose length is
a certain internal combustion engine is air cooled and has a cylinder constructedof cast iron where k35btuhrftr. the
Consider the amplifier between stations B and C of the temperature measurement system shown in below. [a] Determine the minimum input impedance of the amplifier (in Ω) required to keep the amplifier's voltage measurement loading error, ev, less..
a 50-kg iron block and a 20-kg copper block both initially at 80oc are dropped into a large lake at 15oc. thermal
The assembly consists of a 3-kg pulley A and 10-kg pulley B. If a 2-kg block is suspended from the cord, determine the distance the block must descend, starting from rest, in order to cause B to have an angular velocity of 6 rad> s. Neglect the m..
air flow along a length of a 50x50cm square heated flat plate is in a large room the plates surface is at a uniform
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