The lower yield point for an iron that has an average grain diameter of 1 × 10–2mm is 230 MPa (33,000 psi). At a grain diameter of 6 × 10–3mm, the yield point increases to 275 MPa (40,000 psi). At what grain diameter will the lower yield point be 310 MPa (45,000 psi)?

Which of the following energy forms are invovled in a nuclear power plant ? heat ,sound , electrical , nuclear ,mechanical

What are atoms of the same element with varying number of neutrons

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