which of these statements best describes a use of the watershed model?

a: it forecast floods and droughts at different locations.

b: it forecast the amount of precipitation at different locations.

c: it determine the quantity and quality of water at different locations.

d: it determine the amount of water used by humans at different locations.

Four objects are being tested to see how they are affected by fluid friction. object w has a surface area of 4.5 cm2, object x has a surface area of 2.5 cm2, object y has a surface area of 6.2 cm2, and object z has a surface area of 3 cm2. which object would experience the most fluid friction?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?