1.What review process does Facebook data scientists have to go through in order to launch a psychological study? Thousands of Facebook Inc. users received an unsettling message two years ago: They were being locked out of the social network because Facebook believed they were robots or using fake names. To […]

http://ed.ted.com/on/hwhfwgfw 1. Why can fancy traits, like long tail feathers that make flying more difficult, evolve even if they make survival less likely? 2. In a particular bird population, males with the longest and brightest tail feathers get more mating opportunities. Do you expect males in this population to grow […]

Three pairs of genes with two alleles each (A1 and A2 , B1 and B2 , and C1 and C2 ) control the height of a plant. Suppose that the 1 allele is dominant in each case and the 2 allele is recessive. Under this revised scheme, the dominant phenotype […]

A circular coil enclosing an area of 160 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 7.0 ?, and the ends of the wire are connected to form a closed circuit. Initially, a 1.2-T uniform magnetic field points perpendicularly upward […]