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KhanAcademyExercises

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New exercises from Khan Academy 2020-01-24T19:14:35.042586
Aggiornato: 2 ore 11 min fa

Characteristics of longitudinal and transverse waves

Ven, 2020-01-24 19:14
Practice identifying the characteristics of a longitudinal or transverse wave such as the wavelength, crest, and areas of compression. 

Comparing electric force and gravitational force

Ven, 2020-01-24 17:01
Practice comparing the magnitude and direction of the electric and gravitational forces between objects.

Volumes with cross sections: triangles and semicircles

Gio, 2020-01-23 17:15
Find volumes of solids with a given base and a common shape for all cross sections. In this exercise, cross section shapes are either triangles or semicircles.

Concave and convex mirrors

Gio, 2020-01-23 10:15
Let's practice word problems involving spherical mirrors using the mirror and the magnification formulas together.

Absolute minima & maxima (closed intervals)

Mer, 2020-01-22 21:57
Find absolute minimum/maximum points of continuous functions over closed intervals.

Externalities: Foundational concepts

Mer, 2020-01-22 21:39
Practice what you have learned about identifying externalities and using graphs to identify both market equilibrium and socially optimal outcomes in this exercise.

The Consumer Price Index (CPI)

Mer, 2020-01-22 21:37
Practice what you've learned about how to calculate the consumer price index and the rate of inflation, as well as the limitations of the CPI in this exercise.

Real vs. nominal GDP

Mer, 2020-01-22 21:37
Practice what you've learned about real GDP, nominal GDP, and the GDP deflator in this exercise.

Science, computing, and the Internet

Mer, 2020-01-22 20:53
Check your understanding of Moore's law, open access, citizen science, and volunteer computing in this set of free practice questions designed for AP Computer Science Principles students.

2-step estimation word problems

Mer, 2020-01-22 19:57
Use estimation to solve two-step word problems involving addition, subtraction, multiplication, and division.  

Calculating frequency and wavelength from displacement graphs

Mer, 2020-01-22 19:51
Practice using a displacement graph and wave speed to find the frequency and wavelength of a wave. 

General triangle word problems

Mer, 2020-01-22 17:40
Solve word problems that involve general triangles using trigonometry.

Real interest rates and international capital flows

Mer, 2020-01-22 03:58
Practice what you've learned about differences in real interest rates affect the movement of financial capital between countries. In this exercise, you'll get practice synthesizing many of the models you have seen so far to better understand the chain of events that occurs when different countries have different relative real interest rates.

Westward expansion: economic development

Mar, 2020-01-21 19:46
Test your knowledge on the economic causes and effects of settlement of the West.

Solve triangles using the law of sines

Mar, 2020-01-21 16:35
Solve missing triangle measures using the law of sines.

Predicting motion using the center of mass

Lun, 2020-01-20 04:54
Practice predicting the motion of an object using the center of mass of the system. 

Cellular respiration

Lun, 2020-01-20 04:47
Test your knowledge of cellular respiration!

Limitations of GDP

Lun, 2020-01-20 04:44
Practice what you've learned about the limitations of GDP in this exercise.

Foundational concepts: determinants of currency supply and currency demand

Ven, 2020-01-17 17:46
Practice what you have learned about the things that shift the supply of a currency or the demand for a currency in the foreign exchange market.

Patterns in multiplication tables

Ven, 2020-01-17 01:33
Practice discovering and explaining patterns in multiplication tables.

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