A sample of lemon juice has a ph of 3. What is the [OH-] concentration of the lemon juice?

Which notation is used to represent an alpha particle? a. b. c. d.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

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?