Earth is about 150 million kilometers from the sun, and the apparent brightness of the sun in our sky is about 1300 watts/m2. use these two facts and the inverse square law for light to answer the questions.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

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