Calculate focal length of a magnifying lens that produces a virtual image at a distance of 26 mm when the object is placed 15 mm away

Work = force × a. work b. energy c. distance d. momentum

The softest and hardest minerals are: softest hardest

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?