what is the intensity, in terms of i0, if a lens focuses the laser beam to 1/10 its initial diameter?

Both independent and dependent clauses

Which best describes the difference between internal and thermal energy?

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to