Aresistance is added in parallel to a 470 ω resistance to give an effective resistance of 330 ω. what is the approximate value of the added resistance? a) 140 ω b) 680 ω c) 1.1 kω d) 1.8 kω

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

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?

In which of the following is positive work done by a person on a suitcase