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New exercises from Khan Academy 2021-06-21T23:29:58.000000
Atualizado: 1 hora 42 minutos atrás

### Sign convention

ter, 2021-03-23 09:37
Let's practice problems involving the Cartesian sign convention for mirrors and lenses.

### Connection between relative and absolute refractive indices

ter, 2021-03-23 09:36
Let's practice some problems to better understand the concept of relative refractive indices of different optical media.

### Paths of charged particles in uniform magnetic fields

ter, 2021-03-23 09:35
Let's practice some problems to better visualize the trajectories of charged particles moving through a magnetic field.

### Electric field due to a point charge

ter, 2021-03-23 09:24
Let's practice some problems to better understand how to calculate the electric field vector due to a point charge.

### Potential energy of a system of charges (intermediate)

ter, 2021-03-23 09:18
Let's practice some problems to conceptually understand the potential energy of a system of charges.

### Electrostatic properties of conductors

ter, 2021-03-23 09:00
Let's practice some problems to better understand the electrostatic properties of conductors.

### Electric field and potential (intermediate)

ter, 2021-03-23 08:35
Let's practice some problems to better understand how to find the electric field at a point given the potential function in the region.

### Parallel plate capacitors

seg, 2021-03-22 17:13
Let's practice some problems to better understand how capacitance is related to the geometrical attributes of a capacitor - its plate area and plate separation.

### Capacitors with dielectrics

seg, 2021-03-22 17:09
Let's practice some problems to better understand how the capacitance changes when a dielectric is introduced between the plates.

### Combination of capacitors (mixed circuits)

seg, 2021-03-22 17:06
Let's practice some problems to better understand how to find the equivalent capacitance of a mixed combination of parallel and series capacitors.

### Energy stored in a capacitor (basic)

seg, 2021-03-22 17:02
Let's practice some problems to better understand how to calculate the energy stored in a capacitor given its capacitance, charge stored, or potential difference across the plates.

### Eukaryotic cell structures

seg, 2021-03-22 03:12
Test your knowledge of eukaryotic cell structures!

### Iterated integrals

seg, 2021-03-22 03:03
Solve for the value of an iterated integral with numeric bounds.

### Bond hybridization

sex, 2021-03-19 16:17
Check your understanding of bond hybridization in this set of free practice questions designed for AP Chemistry students.

### Electric field due to a dipole

sex, 2021-03-19 10:41
Let's practice some problems to better understand how the electric field due to a dipole behaves parallel and perpendicular to its axis.

### Prove triangle properties

seg, 2021-03-15 18:23
Use transformations, line and angle relationships, and triangle congruence criteria to prove properties of triangles.

### Finding currents and voltages (mixed circuits)

seg, 2021-03-15 03:22
Finding currents and voltages (mixed circuits)

### Variation

qui, 2021-03-11 05:37
How variation occurs and its advantages

### Guard cells and stomata

qui, 2021-03-11 05:24
Guard cells and stomata

### Apply: Newton’s law of universal gravitation

qua, 2021-03-10 00:51
Apply your understanding of Newton's law of universal gravitation in this set of free practice questions aligned to NGSS standards.