For an unpolarized EM wave, the electric field direction is

A. perpendicular to the magnetic field direction.
B. parallel to the magnetic field direction.
C. perpendicular to the direction of wave propagation, but randomly oriented with respect to the magnetic field direction.
D. parallel to the direction of wave propagation.


A. perpendicular to the magnetic field direction.

Physics & Space Science

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In a photoelectric effect experiment, electrons emerge from a copper surface with a maximum kinetic energy of 1.10 eV when light shines on the surface. The work function of copper is 4.65 eV

Which one of the following values is closest to the wavelength of the light? (h = 6.626 × 10-34 J ? s, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J) A) 220 nm B) 150 nm C) 360 nm D) 1100 nm

Physics & Space Science

Grass appears green because

A) it emits green light and absorbs other colors. B) it absorbs green light and emits other colors. C) it transmits green light and emits other colors. D) it reflects green light and absorbs other colors.

Physics & Space Science

In composition, asteroids and meteoroids are most like:

A) jovian planets. B) Kuiper Belt objects. C) comets. D) terrestrial planets. E) the moons of Jupiter.

Physics & Space Science

How would you include contact resistance between the two materials Derive the appropriate difference equations.

GIVEN
Interface between two materials with different thermal conductivities and contact resistance at the
interface
FIND
(a) The appropriate difference equations
SKETCH

Physics & Space Science