The aluminum shell is fully bonded to the brass core and

A First Course in Probability 9
Suppose that the number of events that occur in a specified time is a Poisson random variable with parameter \(\lambda\). If each event is counted with probability \(p\), independently of every other event, show that the number of events that are counted is a Poisson random variable with parameter \(

Fundamentals of Physics 10
In the return stroke of a typical lightning bolt, a current of 2.5 ' 104 A exists for 20 ms. How much charge is transferred in this event?

Myers' Psychology for AP 2
Why do researchers find the study of fraternal twins important? a. They share similar environments and the same genetic code. b. Data collected concerning their similarities is necessary for calculating heritability. c. They are the same age and are usually raised in similar environments, but they do

Physics for Scientists and Engineers: A Strategic Approach, Standard Edition (Chs 1-36) 4
Dee is on a swing in the playground. The chains are 2.5 m long, and the tension in each chain is 450 N when Dee is 55 cm above the lowest point of her swing. Tension is a vector directed along the chain, measured in newtons, abbreviated N. What are the horizontal and vertical components of the tensio

Campbell Biology 9
Which of the following processes includes all others? a. osmosis b. diffusion of a solute across a membrane c. facilitated diffusion d. passive transport e. transport of an ion down its electrochemical gradient

Biology 11
What would happen if a plant cell were placed in an isotonic solution? a hypertonic environment? a hypotonic environment? How would you modify your predictions for an animal cell?

Human Biology 11
Define the difference between (a) gene and allele, (b) dominant allele and recessive allele, (c) homozygote and heterozygote, and (d) genotype and phenotype.

Urban Economics 8
Hurricane Katrina Hurricane Katrina destroyed a large fraction of the housing stock of New Orleans, with relatively large losses in the low-quality market. To simplify, suppose that the hurricane destroyed only low-quality houses. a. Use a graph to show the effects of the hurricane on the markets for