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1. Identify the terms that may arise from the ground configurations of the atoms of elements of Period 2 and suggest the order of their energies.
2. Find the first-order corrections to the energies of the hydrogen atom that result from the relativistic mass increase of the electron
Determine the collision probability of two stars within the galaxy, and the number of stars that will have experienced a collision by the time they have traveled a distance of 0.0100 mean free paths.
If the velocity of the airplane in its horizontal flight is 1050 km/h at the end of the 9 s, calculate the timeaverage increase ?R in air resistance. The mass of the rocket fuel used is negligible compared with that of the airplane.
A home buyer obtains a mortgage of $100,000 at an interest rate of 8% over 20 years. Estimate the annual payments to repay this loan.
An ideal Refrigeration cycle with R134a as the working fluid consists of isentropic compression from saturated vapor at -10 C, constant-pressure heat rejection in the condenser5 at 39 C, constant- enthalpy pressure loss across a throttle valve, and c..
A mixture of air and water at a temperature of 30ºC and a pressure of 750 mmHg has a relative humidity of 75%. The wet gas is compressed to 40 psia and cooled to 20ºC. How many cubic meters of original gas were compressed if 0.75 lb of condensate (wa..
If the flow rate through the pump is 18 L/s and the changes in elevation and the flow velocity across the pump are negligible, the overall efficiency of the pump is
Air at 14.7 psia and 70 degrees Fahrenheit is compressed adiabatically by a centrifugal compressor to a pressure of 100 psia. What is the minimum temperature rise possible? Explain.
in a single-flash geothermal power plant geothermal water enters the flash chamber a throttling valve at 230 dgrees c
Determine the payback period for the dimmer control system assuming the following: 1-1/2 ton cooling installed for 600 ft2 at $2200/ton, lighting control system cost at $1/ft2, 30% reduction in annual lighting due to daylighting, $0.10/kW h electrici..
Sea water (p=1025 kg/m3) flows through a pump at 0.21 m3/s. The pump inlet is 0.25m in diameter. At the inlet the pressure is -0.15 in of mercury. The pump outlet, 0.152 m in diameter, is 1.8 m above the inlet. The outlet pressure is 175 kPa. If the ..
a copper wire of diameter 0.80 mm fails at an engineering stress 248.2 mpa. its ductility is measured as 75 reduction
The bearing (inner race rotate) is subjected to the loads as shown in Fig. 2 (next page). The shaft diameter is 30 mm. The shaft rotates at 655 rpm for 9000 hours life. Select ball bearings (load rating) for position A and C. Assume initial values. X..
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