Predict the ionization energy of the helium ion
Suppose an atom having atomic number Z is ionized so that all but 1 of its Z electrons are removed. Predict the ionization energy of the helium ion (singly-ionized helium).
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How much time will it take the golf ball to make the journey to the satellite in the Earth's frame? How much time will it take in the golf ball's frame?
A 5.00-A current run throug a 12-guege copper wire (diameter 2.05 mm) and through a light bulb. Copper has 8.5x10^28 free electrons per cubic meter. a) How many electron pass throuh the light bulb each second ?
Consider a counter-flow heat exchanger in a refrigeration system. Calculate temperature of air at the exit of the heat exchanger.
The World Health Organization estimates that 5% of all adults in sub-Saharan Africa are living with HIV/AIDS. A survey takes a random sample of 1600 adults from all over sub-Saharan Africa. What is the probability that a random sample of 1600 adul
At the beginning of the compression in a diesel cycle, T = 300 K and P = 200 kPa; after combustion (heat addition) is complete, T = 1500 K and P = 7.0 MPa.
Air enters the compressor at 98 kPa and 295 K (State 3) and exits at 1000 kPa and 620 K (State 4) at the rate of 10 kg/s. Calculate the net power (MW) delivered to the generator by the turbine.
Assume that the probability of a failure is the same for any two months and that the occurrence or nonoccurrence of a failure in any month is independent of failures in any other month.
A spring-mass-damper system is subjected to a harmonic force. The amplitude is found to be 20mm at resonance and 10mm at a frequency 0.75 times the resonance frequency. Find the damping ratio in the system?
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