# JJTheTutor's Shop

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Students/Parents: Thank you for considering me as you tutor. I have over 7-years of experience providing top-of-the-line service for hundreds of students taking college level mathematics, and physics. I have a Bachelor’s of Science in Mathematics with an emphasis of pure math, and am currently in graduate school for mathematics. I love to explain complex information, and am able to do this in a simple fashion that students respond to very quickly.

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Students/Parents: Thank you for considering me as you tutor. I have over 7-years of experience providing top-of-the-line service for hundreds of students taking college level mathematics, and physics. I have a Bachelor’s of Science in Mathematics with an emphasis of pure math, and am currently in graduate school for mathematics. I love to explain complex information, and am able to do this in a simple fashion that students respond to very quickly.

#### Find the Electric Flux

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A 6.20-mC point charge is at the center of a cube with sides of length 0.500 m. (a) What is the electric flux through one of the six faces of the cube? (b) How would your answer to part (a) change if the sides were 0.250 m long? Explain.

#### Unpolarized Light With Intensity

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In this video presentation from JJ the Tutor we look at how unpolarized light with intensity is incident on two polarizing filters. The axis of the first filter makes an angle of = 60 with the vertical, and the axis of the second filter is horizontal.

#### Find the Electric Flux

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A point charge q1 = 4.00 nC is located on the x-axis at x = 2.00 m, and a second point charge q2 = -6.00 nC is on the y-axis at y = 1.00 m. What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radius (a) 0.500 m, (b) 1.50 m, (c) 2.50 m?

#### Incident angle for which ray refracts into water

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A flat piece of glass covers the top of a vertical cylinder that is completely filled with water. If a ray of light traveling in the glass is incident on the interface with the water at an angle of = 36.0 , the ray refracted into the water makes an angle of 49.5 with the normal to the interface.

#### Two plane mirrors intersect at right angles

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Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a point 11.5 from their point of intersection, as shown in the figure For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is 28.0 long) after reflecting from the first mirror?

#### Charged Paint Spread on Uniform Surface

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Find Electric Field - Electromagnetism Physics. A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, giving it a charge of -35.0 mC. Find the electric field (a) just inside the paint layer; (b) just outside the paint layer; (c) 5.00 cm outside the surface of the paint layer.

#### Vector A is in the direction 34.0 degrees clockwise from the -y-axis. The x-component of A is Ax=-16

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Vector A is in the direction 34.0 degrees clockwise from the -y-axis. The x-component of A is Ax=-16.0 m. (a) What is the y-component of A? (b) What is the magnitude of A?