In the previous problem, find the swimmer’s speed at the

Introductory Chemistry 5
A lead fishing weight with a mass of 57 g absorbs 146 cal of heat. If its initial temperature is \(47\ ^{\circ}\mathrm{C}\), what is its final temperature? Equation Transcription: Text Transcription: 47

Microbiology: An Introduction 11
Assume you inoculated 100 facultatively anaerobic cells onto nutrient agar and incubated the plate aerobically. You then inoculated 100 cells of the same species onto nutrient agar and incubated the second plate anaerobically. Aer incubation for 24 hours, you should havea. more colonies on the ae

General, Organic, and Biological Chemistry: Structures of Life 4
Problem 72QP The molecules CH4 and CH3Cl both have tetrahedral shapes. Why is CH4 nonpolar whereas CH3Cl is polar?

Biology: The Dynamics of Life 1
Make a list of the characteristics that archaebacteria and eubacteria share. Then make a list of their differences.

Krugman's Economics for AP® (High School) 2
Suppose a rise in productivity increases potential output and creates a recessionary gap. Explain how the economy can self-correct in the long run.

Differential Equations with Boundary-Value Problems 9
Reread the discussion following Example 5. Construct a linear first-order differential equation for which all solutions are asymptotic to the line y = 3x - 5 as \(x \rightarrow \infty\)

Biology: The Unity and Diversity of Life 15
Bluebirds are songbirds that, like wood ducks, nest in cavities in trees. European house sparrows, which have been introduced to North America, also nest in such cavities. Explain how the arrival of the house sparrows affected the carrying capacity for bluebirds. What affect would you expect this cha

Principles of Economics 9
Describe the economic logic behind the theory of purchasing-power parity.