Different five-character passwords
How many different five-character passwords can be formed from the lowercase letters of the alphabet if repetition is not allowed?
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What are the odds of all 5 lug nuts falling off the same pick-up truck wheel at the same time?
An isolated spherical conductor has an excess charge of -7.2µC placed on its surface. Inside the conductor is a cavity, within which is a point charge of 4.30 µC. How many excess electrons are on the exterior surface of the conductor?
A 0.010 M aqueous solution of a weak acid HA has a pH of 4. What is the degree of ionization of HA in the solution?
What is the minimum pressure the tank has to be pumped up to reach sonic flow somewhere in the nozzle? At what location would this sonic flow occur?
Nitric acid and zinc react to form zinc nitrate,amomonium nitrate and water.4Zn(s) + 10HNO3 (aq)------>4Zn(NO3)2 (aq) +NH4NO3 (aq) + 3H20 (l)
A solenoid carries a current that produces a field inside it. A wire carrying a current lies inside the solenoid, at the center, carrying a current along the solenoid's axis. Is there a force on this wire due to the field of the solenoid? Explain.
If we flip a fair die 1,000 times, what would we expect the mean number of dots to be?
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What Moon formation theory is discredited by the fact that the Earth and the Moon have significantly different compositions?
What type of atmospheric circulation was MOST likely responsible for the creation of the Arabian Desert?
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