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New exercises from Khan Academy 2021-05-04T22:50:46.000000
Atualizado: 2 horas 11 minutos atrás

### Create histograms

seg, 2021-03-29 04:24
Practice creating histograms.

### Solve triangles using the law of sines

sex, 2021-03-26 22:04
Find missing triangle measures using the law of sines.

qui, 2021-03-25 17:16
Practice what you've learned about the business cycle, and how different phases of it relate to GDP and the unemployment rate, in this exercise.

### Vector components from magnitude & direction

qui, 2021-03-25 16:48
Take a vector given in magnitude and direction form and convert it to component form.

### Direction of vectors

qui, 2021-03-25 16:37
Find the direction angle of a vector.

### Reflexive, symmetric and transitive relations (basic)

qui, 2021-03-25 11:39
Basic questions of above three types of relations on finite small sized sets, with explicit relation given.

### One-one and onto functions (visual)

qua, 2021-03-24 11:43
check whether given function in arrow diagram or graph is one-one, onto, both or neither.

### Identify graphs of functions

qua, 2021-03-24 11:26
identify shape of common function, lateral and vertical displacement, be able to study behaviour as x tends to infinity

### Domain and range of relations (infinite sets)

qua, 2021-03-24 11:17
Find domain and range when the relation is from an infinite set to an infinite set.

### Image formation in spherical lenses

ter, 2021-03-23 09:38
Let's practice problems to figure out various optical distances in experiments with lenses, using just ray diagrams.

### Ray diagrams and curved mirrors

ter, 2021-03-23 09:37
Let's practice problems involving formation of images by spherical mirrors, using ray diagrams.

### 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.