Select the correct answer. Five-year-old Emily is playing on a trampoline with marbles. She presses down the fabric and the marbles roll toward her. To which theory of
physics does this scenario relate?
OA :equivalence of mass and energy

OB:equivalence principle

OC:the wave-particle duality

OD. general theory of relativity

OE:special theory of relativity

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