How many mass electrons has it acquired
ON a dry day, your body can accumulate static charge from walking across a carpet or from brushing your hair. If your body develops a charge of -15 microcoulombs, how many mass electrons has it acquired, what is their collective mass?
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You are conducting an experiment inside an elevator that can move in a vertical shaft. A load is hung vertically from the ceiling on a string, and is stationary with respect to you.
A group of psychologists examined the effect of alcohol on the reactions to a threat. After obtaining a blood alcohol level (BAL) of at least 0.015 mg/cl, experimental subjects were placed in a room and threatened with electrical shocks.
Use R to solve this question. Scores made on a certain aptitude test by nursing students are approximately normally distributed with a mean of 500 and a variance of 10000. What proportion of those taking the test score below 200?
Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849-{\rm g} sample of iodine is accidentally contaminated with 1.00070 {\rm g} of ^{129}{\rm I}, a synthetic radioisotope of iodine used in the treatment of certain diseases of the t
The following reaction comes to equilibrium at 800 K. At equilibrium the partial pressure of CO is 10.0 atm and the partial pressure of CO2 is only 2.5 x 10?? atm.
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O is 75.2 J/mol*K and that the heat capacity of H2O is 37.7 J/mol*K, calculate the heat of fusion of water at -10 degrees C.
An airplane has a mass of 33,500 kg and takes off under the influence of a constant net force of 37,500 N. What is the net force that acts on the plane's 80 kg pilot?
If the pooled sample is positive then individually test each of the 500 samples in the pool. What is the probability that we obtain a positive test result for a randomly chosen pooled sample?
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