Acar moves in a straight line at 16.0 m/s for 8.0 miles, then at 30.0 m/s for another 8.0 miles.
(a)
is the car's average speed less than, greater than, or equal to 23.0 m/s?
less than 23.0 m/s
equal to 23.0 m/s
greater than 23.0 m/s
(b)
calculate the car's average speed in meters/second. (enter your answer to three significant figures.)
/s

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

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