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KhanAcademyExercises

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New exercises from Khan Academy 2021-09-14T20:54:49.000000
Aggiornato: 1 ora 59 min fa

Identifying weak acids and strong acids

Lun, 2021-06-28 16:23
Practice identifying weak acids and strong acids

Converting recursive & explicit forms of arithmetic sequences

Lun, 2021-06-28 16:22
Given the explicit formula of an arithmetic sequence, find its recursive formula, and vice versa.

Understand equivalent ratios in the real world

Lun, 2021-06-28 09:30
This exercise builds an understanding of what it means for ratios to be equivalent or not be equivalent.

Understand: Newton’s law of universal gravitation

Lun, 2021-06-28 09:22
Check your understanding of Newton's law of universal gravitation in this set of free practice questions aligned to NGSS standards.

Formulas and units

Lun, 2021-06-28 09:10
Use various formulas to solve real world problems while attending to the units of the quantities that make up the formulas.

Cells in series and parallel

Lun, 2021-06-28 08:45
Let's practice some problems to get better at solving circuits with multiple cells in series or parallel combinations.

Cells: emf and internal resistance

Lun, 2021-06-28 08:41
Let's practice some problems to better understand how the internal resistance of a cell influences the terminal voltage and the current that can be drawn from it.

Predict changes in drift velocity

Lun, 2021-06-28 04:11
Drift velocity of electrons in a current is related to several factors. Let's practice some problems to better understand how it's affected by changes in those factors.

Temperature dependence of resistivity

Lun, 2021-06-28 03:57
Let's practice some problems to better understand how the resistivity of a conductor varies with small changes in temperature.

Use Pythagorean theorem to find right triangle side lengths

Lun, 2021-06-28 02:02
Find the length of the hypotenuse or a leg of a right triangle using the Pythagorean theorem.  

Defining transformations

Lun, 2021-06-28 02:00
Refine definitions of rigid transformations. Given a description of the effect of a transformation, determine which rigid transformation it is.

Division with groups of objects

Lun, 2021-06-28 02:00
Use visual models to understand division.

Write numbers in number and word form

Lun, 2021-06-28 02:00
Write numbers in number and word form within 1000.

Convert units multi-step word problems (US customary)

Lun, 2021-06-28 02:00
Solve word problems that involve converting between US customary measures of distance, volume, and mass.

Web protocols

Dom, 2021-06-27 20:56
Check your understanding of the World Wide Web and HTTP in this set of free practice questions designed for AP Computer Science Principles students.

Write whole numbers as fractions

Dom, 2021-06-27 20:56
Represent fractions as whole numbers and whole numbers as fractions.

Relate fractions to 1

Dom, 2021-06-27 20:56
Determine whether fractions are greater than, less than, or equal to one.

Fractions on the number line

Dom, 2021-06-27 20:56
Plot and spot fractions on the number line.

Using course mastery on Khan Academy

Gio, 2021-06-24 20:11
A check for understanding of the Using course mastery on Khan Academy lesson.

Bronsted-Lowry concept of acids and bases

Gio, 2021-06-24 10:56
Exercise on understanding the Bronsted-Lowry concept of acids and bases

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