How many electrons must be deposited on aluminum layer
A spherical ballon with radius 1.0m consists of an aluminum coated Mylar. How many electrons must be deposited on the aluminum layer such that the resulting electric pressure is equal to one atmosphere.
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A 4-ft concrete post is reinforced with four steel bars, each with a 3/4 in. diameter. Knowing that E of steel= 29x10^6 psi and Eof concrete= 3.6x10^6 psi.
Two point charges of 30 nC and -40 nC are held fixed on an x axis, at the origin and at x = 76 cm, respectively. A particle with a charge of 42 µC is released from rest at x = 28 cm. If the initial acceleration of the particle has a magnitud
Atmospheric air at 10 psia and 70 F dry bulb has a relative humidity of 50%. If the air is sensibly heated at a constant pressure to 80F dry bulb. What is the final relative humidity?
A fully loaded plane weighs 200,000 lbf as it lands at a speed of 125 mph. The mass of the brakes on the plane is 200 lbm and the brake assembly has an equivalent specific heat of 0.20 Btu/lbm ·°R.
How many ways are there to pick five people for a committee if there are six (different) men and eight (different) women and the selection must include at least one man and one woman?
A feeder heater extracts steam from a turbine at 600kPa and 250C which it combines with 0.3 kg/s of liquid at 600 kPa and 150C. The exhaust is saturated liquid at 600 kPa.
Where would the spectral lines be found for the two lowest energy excitations from the ground state? (answer in cm-1).
Water is boiled at 1 atm pressure in a 25-cm-internal- diameter stainless steel pan on an electric range. If it is observed that the water level in the pan drops by 10cm in 45 min, determine the rate of heat transfer to the pan.
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