Diffraction from compact discA laser beam of wavelength 632 nm shines at normal incidence on the reflective side of a compact disc.

a) The tracks of tiny pits in which information is coded onto the CD are 1.60μm apart. For whatangles of reflection (measured from the normal) will the intensity of light be maximum?
b) On a DVD, the tracks are only 0.74μm apart. Repeat the calculation for that DVD.

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Explain what makes a passenger in a turning car slide toward the door. critical thinking

The second largest public utility in the nation is the sole provider of electricity in 32 counties of southern florida. to meet the monthly demand for electricity in these counties, which is given by the inverse demand function p = 1,200 – 4q, the utility company has set up two electric generating facilities: q1 kilowatts are produced at facility 1, and q2 kilowatts are produced at facility 2 (so q = q1 + q2). the costs of producing electricity at each facility are given by c1(q1) = 8,000 + 6q12 and c2(q2) = 6,000 + 3q22, respectively. determine the profit-maximizing amounts of electricity to produce at the two facilities, the optimal price, and the utility company’s profit