Collecting light and bringing it to focus.
The magnetic field is responsible for levitating the hoverboard and rider as it traverses the half pipe.
<h3>What is a magnetic field?</h3>
- The magnetic field is defined as the field the magnetic materials generate or when an electric charge moves in a field region that generates the magnetic field.
- The surface is made up of from the copper and copper is conductor of electricity.
- When an electrical charge moves, it generates a magnetic field. As with electrical current running via a wire, the spinning and orbiting of an atom's nucleus produces a magnetic field.
- Thus, the magnetic field is responsible for levitating the hoverboard and rider as it traverses the half pipe.
<h3>What is the characteristics of Magnetic fields?</h3>
- Magnetic field lines never cross one another.
- They begin (from the north pole) and end (to the south pole) perpendicular to the surface of the magnet. Magnetic field lines also run through the magnet.
- The magnetic field is denser at the poles and less dense as we move away from them.
- A single magnetic pole does not exist. Magnetic poles are always found in pairs of opposing poles.
Learn more about the magnetic field here:
<u>brainly.com/question/23096032</u>
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To solve this problem it is necessary to apply the concepts related to diffraction through a circular opening.
By definition the angular resolution is given by
Where,
D = Diameter of the lens aperture.
Our values are given as,
Therefore replacing,
Therefore the angular separation is 
<u>Given data:</u>
charge 1 (q₁) = 8.0 × 10⁻⁹ coulombs
charge 2 (q₂) = -1.4 × 10⁻⁸ coulombs
distance between fur and brush (r) = 5.0 × 10⁻¹ m
We know that,
The couloumb's law describes the charge between two particles
Mathematically,
<em> F = k.(q₁ . q₂)/r² </em> ----------------------- (i)
Where F = Force between particles
k = constant, 8.99 × 10⁹ Nm²/C² -------------- (ii)
keep the charge, distance values and value of k in equation (i), to determine the magnitude of force
F = 8.99 × 10⁹ ×{ (8.0 × 10⁻⁹) × ( -1.4 × 10⁻⁸)} / (5.0 × 10⁻¹)²
= -4.02 × 10⁻⁶
<em>The force is negative means "the force is attractive"</em>
<em> </em>
