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Some species of bamboo can grow 250 mm/day. Assume individual cells in the plant are 10 µm long.
a) How long, on average, does it take a bamboo stalk to grow 1 cell length?
b) How many cell lengths are added in one week, on average?
A gas is contained in a piston of 5 m^3 at 100 KPa. Then the gas is compressed till its volume is reduced to 2.5 m^3. If there was no exchange of heat from the system during the compression process, calculate the work required for the compression and..
a Steel ally to be used for a spring application must have a modulus of resilience of at least 2.07 MPa. What must be the metal's minimum yield strength.
A copper and nickel alloy has the following composition: 80wt% Cu and 20wt% Ni. Convert the composition to atomic percent.
a spherical pyrex glass shell had inside and outside diameters of d10.1m and d2 .2m respectively. the inner surface is
Two groundwater monitoring wells are located 100 m apart. The pressure of the water in the wells are measured using pressure transducers that reads gage pressure.
Plot the following quantities, each in kW, versus L ranging from 0.01 to 1 m: the rate of conduction through the rod, the rates of exergy transfer accompanying heat transfer into and out of the rod, and the rate of exergy destruction. Let T0 5 300..
orifices are commonly placed in flow lines to measure the flow rate through the line. the flow rate is proportional to
Define single shear? Define double shear? What is the equation for shear area? What is the equation for shear stress?
an engineer is designing a system that requires transporting .01 m3s of helium at 15degc and 120 kpa. the velocity of
a well insulated rigid container stores a gas cv 0.387 kjkg k in two sections at different temperatures. section 1 has
A steam power plant operates on the ideal reheat Rankine cycle. Steam enters the high pressure turbine at 6 MPa and 4000C and leaves at 2 MPa. Steam is then reheated at constant pressure to 4000C before it expands to 20 kPa in the low pressure turbin..
What is the outlet water temperature and the total rate of heat transfer to the cold plate? Is this a good cold plate design? How could its performance be improved?
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