A heat engine exhausts its heat at 350°C and has a Carnot

Biology 8
In the face of biological magnification of toxins, is it healthier to feed at a lower or higher trophic level? Explain.

Physics for Scientists and Engineers with Modern Physics 9
Why is the following situation impossible? In the Bohr model of the hydrogen atom, an electron moves in a circular orbit about a proton. The model states that the electron can exist only in certain allowed orbits around the proton: those whose radius r satisfies r 5 n2 (0.052 9 nm), where n 5 1, 2, 3

Elementary Statistics: Picturing the World 6
Using Technology to Find Quartiles and Draw Graphs In Exercises 2528, use technology to (a) find the data sets first, second, and third quartiles, and (b) draw a box-and-whisker plot that represents the data set.. Hourly Earnings The hourly earnings (in dollars) of a sample of 25 railroad equipment m

Human Biology 11
Which statement best fits the principle of segregation? a. Units of heredity are transmitted to offspring. b. Two genes of a pair separate from each other during meiosis. c. Members of a population become segregated. d. A segregating pair of genes is sorted out into gametes independently of how g

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
Consider a manufacturing industry that exports its output by ship. Each firm has total revenue per month of $1,400 and a monthly nonland production cost of $400. Each firm initially transports its output from its factory at location x to the port (x 5 0) on trucks. A ?rms freight cost is $100 per blo

Introductory Chemistry: A Foundation 9
_____ has a definite volume but takes the shape of its container.