object that is thrown straight up falls back to Earth.

Introductory Chemistry 5
Use the law of constant composition to complete the table summarizing the amounts of nitrogen and oxygen produced upon the decomposition of several samples of dinitrogen monoxide.

Classical Mechanics 0
In Chapter 4 (at the end of Section 4.7) I claimed that, for a system with one degree of freedom, positions of stable equilibrium "normally" correspond to minima of the potential energy U (q). Using Lagrangian mechanics, you can now prove this claim. (a) Consider a one-degree system of N particles wi

Organic Chemistry 9
The Stork enamine reaction and the intramolecular aldol reaction can be carried out in sequence to allow the synthesis of cyclohexenones. For example, reaction of the pyrrolidine enamine of cyclohexanone with 3-buten-2-one, followed by enamine hydrolysis and base treatment, yields the product indicat

Campbell Biology 10
Unlike an earthworms metanephridia, a mammalian nephron a. is intimately associated with a capillary network. b. functions in both osmoregulation and excretion. c. receives filtrate from blood instead of coelomic fluid. d. has a transport epithelium.

Krugman's Economics for AP® (High School) 2
Suppose the economy begins in long-run macroeconomic equilibrium. What is the long-run effect on the aggregate price level of a 5% increase in the money supply? Explain.

Principles of Economics 6
If a Japanese car costs 500,000 yen, a similar American car costs $10,000, and a dollar can buy 100 yen, what are the nominal and real exchange rates?

Essentials of Statistics for the Behavioral Sciences 10
Anderson (1999) was interested in the effects of attention load on reaction time. Participants in her study received a dual-task procedure in which they needed to respond as quickly as possible to a stimulus while simultaneously paying attention to the sounds of spoken words. She recorded reaction ti

Biological Psychology 12
How does alcohol decrease anxiety? a. By shifting blood flow from the left hemisphere to the right hemisphere b. By increasing glutamate activity in the prefrontal cortex c. By facilitating the effects of GABA on certain receptors d. By inhibiting the reuptake of serotonin