Diffraction grating: When monochromatic light illuminates a grating with 7000 lines per centimeter, its second order maximum is at 62.4°.  What is the wavelength of the light?

Field intensity: A sinusoidal electromagnetic wave in vacuum delivers energy at an average rate of 3.00 µW/m2.  What are the amplitudes of the electric and magnetic fields of this wave? (c = 3.0 × 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2) (10 points)

Double-slit interference: In the two-slit experiment, monochromatic light of frequency 5.00 × 1014 Hz passes through a pair of slits separated by 2.20 × 10-5 m. (c = 3.00 × 108 m/s)(a) At what angle away from the central bright spot does the third bright fringe past the central bright spot occur?(5 points)(b) At what angle does the second dark fringe occur? (destructive interference)(5 points)

Single-slit diffraction: A single slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum, using monochromatic light of  490-nm wavelength. What is the width of the slit?

Field intensity: A sinusoidal electromagnetic wave in vacuum delivers energy at an average rate of 4.00 µW/m2.  What are the amplitudes of the electric and magnetic fields of this wave? (c = 3.0 × 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2) (10 points)

Double-slit interference: Light of wavelength 575 nm passes through a double-slit and the third order bright fringe is seen at an angle of 6.5° away from the central fringe.  What is the separation between the double slits?

Directing a performer’s attention to important elements of a skill is

Which of the following is NOT a key element included in most definitions of concentration?

When athletes who set outcome goals will experience more anxiety and lower self-confidence in competition; this is

What would be one probable reason that approximately a dozen runners broke the 4-minute running barrier within one year?