KhanAcademyExercises

Let's practice some problems to better visualize the trajectories of charged particles moving through a magnetic field.

Let's practice some problems to better understand the working and some basic applications of a stretched-wire potentiometer.

3rd grade reading comprehension practice using informational text

Practice calculating a two-sample t interval to estimate the difference between population means.

Make conclusions in a chi-square goodness-of-fit test based on the p-value and significance level.

Let's practice some problems to better understand how the capacitance changes when a dielectric is introduced between the plates.

Explain the relationship between core beliefs of US citizens and attitudes about the role of government

Let's practice some problems to better understand the factors on which the fringe width depends in Young's double-slit experiment.

Check your understanding of photosynthesis in this set of free practice questions aligned to NGSS standards.

Let's solve some problems to better understand how to calculate the effect of a magnetic field on a current-carrying wire.

Let's practice some problems to apply and better understand the lens formula for convex and concave lenses.

Check your understanding of galvanic (voltaic) and electrolytic cells in this set of free practice questions designed for AP Chemistry students.

Questions on demand, the law of demand, and the determinants of demand

Practice analyzing the end behavior of two functions that model similar real-world relationship, where one function is exponential and the other is polynomial.

Let's solve some problems to better understand the relationship between power consumed and resistance of a resistor. We will also see how multiple formulae can be used to evaluate the power.

Dividing decimals by whole numbers like 2.5÷5 or 1.86÷2

Learn to identify nouns in context.

We use appositives to redefine or clarify a noun phrase; test your knowledge in this exercise!

Relate number of elements in X, Y, X union Y and X intersection Y.

Tougher questions on complements, involving de morgan's laws, relations between universal set, its subset and complement of its subsets.