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KhanAcademyExercises

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New exercises from Khan Academy 2021-10-18T10:21:59.000000
Atualizado: 4 horas 42 minutos atrás

Potentiometer: basic applications

2 horas 10 minutos atrás
Let's practice some problems to better understand the working and some basic applications of a stretched-wire potentiometer.

Homes: reading informational text; Have Home, Will Travel 3

9 horas 41 minutos atrás
3rd grade reading comprehension practice using informational text

Two-sample t interval for the difference of means (calculator-active)

9 horas 41 minutos atrás
Practice calculating a two-sample t interval to estimate the difference between population means.

Conclusions in a goodness-of-fit test

9 horas 43 minutos atrás
Make conclusions in a chi-square goodness-of-fit test based on the p-value and significance level.

Capacitors with dielectrics

9 horas 44 minutos atrás
Let's practice some problems to better understand how the capacitance changes when a dielectric is introduced between the plates.

American attitudes about government and politics

9 horas 45 minutos atrás
Explain the relationship between core beliefs of US citizens and attitudes about the role of government

Double-slit experiment: fringe widths (one wavelength)

dom, 2021-10-17 23:52
Let's practice some problems to better understand the factors on which the fringe width depends in Young's double-slit experiment.

Understand: photosynthesis

sex, 2021-10-15 23:17
Check your understanding of photosynthesis in this set of free practice questions aligned to NGSS standards.

Force on a current-carrying wire in a magnetic field (intermediate)

sex, 2021-10-15 14:40
Let's solve some problems to better understand how to calculate the effect of a magnetic field on a current-carrying wire.

Using the lens formula

qui, 2021-10-14 04:26
Let's practice some problems to apply and better understand the lens formula for convex and concave lenses.

Galvanic (voltaic) and electrolytic cells

qua, 2021-10-13 22:20
Check your understanding of galvanic (voltaic) and electrolytic cells in this set of free practice questions designed for AP Chemistry students.

Demand

seg, 2021-10-11 01:15
Questions on demand, the law of demand, and the determinants of demand

Exponential vs. linear growth over time

seg, 2021-10-11 00:53
Practice analyzing the end behavior of two functions that model similar real-world relationship, where one function is exponential and the other is polynomial.

Power consumed by a resistance

sab, 2021-10-09 10:29
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.

Divide decimals by whole numbers

seg, 2021-10-04 02:53
Dividing decimals by whole numbers like 2.5÷5 or 1.86÷2

Identifying nouns

seg, 2021-10-04 02:04
Learn to identify nouns in context.

Appositives

seg, 2021-10-04 01:36
We use appositives to redefine or clarify a noun phrase; test your knowledge in this exercise!

Practical problems on union and intersection of sets (basic)

dom, 2021-10-03 07:04
Relate number of elements in X, Y, X union Y and X intersection Y.

Complement of a set (intermediate)

dom, 2021-10-03 06:39
Tougher questions on complements, involving de morgan's laws, relations between universal set, its subset and complement of its subsets.

Limits of combined functions: products and quotients

sex, 2021-10-01 19:27
Find limits of combinations of two functions whose graphs are given.

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