Solved: SAT Scores The national average SAT score (for

Physics: Principles with Applications 6
Problem 4P A fishermans scale stretches 3.6 cm when a 2.7-kg fish hangs from it. (a) What is the spring stiffness constant and (b) what will be the amplitude and frequency of vibration if the fish is pulled down 2.5 cm more and released so that it vibrates up and down?

Chemistry: The Molecular Nature of Matter and Change 5
Which oxide, CrO3 or CrO, is more acidic in water? Why?

Sears and Zemansky's University Physics with Modern Physics 13
Problem 36E The following measurements were made on a Thyrite resistor: I (A) 0.50 1.00 2.00 4.00 Vab (V) 2.55 3.11 3.77 4.58 (a) Graph Vab as a function of I. (b) Does Thyrite obey Ohms law? How can you tell? (c) Graph the resistance R = Vab/I as a function of I.

Chemistry 11
The men's world record for running a mile outdoors (as of 1999) is 3 min 43.13 s. At this rate, how long would it take to run a 1500-m race? (1 mi = 1609 m.)

Human Heredity: Principles and Issues 11
What is the function of DNA polymerase? a. It degrades DNA in cells. b. It adds RNA nucleotides to a new strand. c. It coils DNA around histones to form chromosomes. d. It adds DNA nucleotides to a replicating strand. e. None of these.

Biology for AP Courses
How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits? How many phenotypes are expected if the traits behave in a dominant and recessive pattern? a. 64 genotypes; 16 phenotypes b. 16 genotypes; 64 phenotypes c. 8 genotypes; 27 pheno

Principles of Economics 9
In a market with a binding price ceiling, increasing the ceiling price will a. increase the surplus. b. increase the shortage. c. decrease the surplus. d. decrease the shortage.

Principles of Economics 9
If business leaders in Great Britain become more confident in their economy, their optimism will induce them to increase investment, causing the British pound to __________ and pushing the British trade balance toward __________. a. appreciate, deficit b. appreciate, surplus c. depreciate, deficit d.