Technological advances are now making it possible to link visible-light telescopes so that they can achieve the same angular resolution as a single telescope over 300 meters in size. Part A What is the angular resolution (diffraction limit) of such a system of telescopes for observations at a wavelength of 500 nanometers?

Explanation:

θ = 1.22 × (λ/D)

where,

θ is the angular resolution (radians) λ is the wavelength of light

= 500 nm

= 0.5 × 10^-6 m

D is the diameter of the lens' aperture.

= 300 m

θ = 1.22 × (0.5/300)

= 0.00203 arcsecond.

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.