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A weather balloon is constructed of a flexible material such that the internal pressure of the balloon is always 10 kPa higher than the local atmospheric pressure. At sea level the diameter of the balloon is 1 m, and it is filled with helium. The balloon material, structure, and instruments have a mass of 100 g. This does not include the mass of the helium. As the balloon rises, it will expand. The temperature of the helium is always equal to the local atmospheric temperature, so it decreases as the balloon gains altitude. Calculate the maximum altitude of the balloon in a standard atmosphere.
the masses of the bar and the disk are 5 kg and 10 kg respectively. the coefficient of kinetic frictionnbspbetween the
Water at 20°C flows steadily through the box in Fig. P3.56, entering station (1) at 2 m/s.
Explain the acronyms RAM, ROM, PROM, EPROM, and EEPROM (or, EAPROM). What is the difference between
The entire unit including the cantilever and the strain gages has a silicon IC construction and measures smaller than 1 mm in size. Outline the operation of the accelerometer. What is the purpose of the second strain gage?
100 kmol/h of biogas (75 mol% CH4 and 25 mol% CO2) is produced in a digester and is drawn off from the headspace under a slight vacuum and piped to a natural gas burning boiler. A slight leak develops in the pipe allowing air (79 mol% N2 and 21 mol% ..
Find the voltage measured by the DVM - what is the reading R and find the relative humidity and the humidity ratio.
Name any two desirable features in a good computer aided design hardware
in an orthogonal cutting operation the chip velocity was determined using a laser doppler velocimeter ldv as 80 of the
consider a one-dimensional plane wall of thickness 2l. the surface at x -l is subjected to convective conditions
a skydiver jumps from a ballon and falls freely for 6 seconds. her parachute then opens decelerating her at a constant
Air undergoes a polytropic process in a piston cylinder from p1=1bar, T1=295K to p2=7bar. The air is modeled as an ideal gas and kinetic and potential energy effects are negligible. For a polytropic exponent of 1.6, determine the work and heat transf..
consider an ideal steam cycle that combines the reheat cycle and the generative cycle. the net power output of the
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