Lake Nettle is 180 kilometres wide. A yacht sailing east at a constant velocity took 2 hours to cross half the width of the lake. What was the yacht's velocity? Write your answer as a whole number.

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit