15 5-A child releases a balloon at a park. The balloon travels up into the air 9 m, and east across the park a distance
of 20 m, before getting stuck in a tree. What is the resultant displacement of the balloon? Express your answer in
components, and then determine the magnitude.
ANSWER
Q X, X
В І
U
를 들를 들
>
.
5 met
9
IN
D

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

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

How did world cup soccer become cool?