a helicopter of mass 800 kg rises to a height of 170 in 20 seconds, before setting off in horizontal flight. calculate the potential energy gain of the helicopter, and hence estimate the mean power of its engine. state a form of kinetic energy that has been ignored in this model.​

The volume of the sun is approximately 1 × 10^18 cu km, while the volume of jupiter is approximately 1 × 10^15 cu km. which of the following is true? a. the volume of jupiter is approximately one thousand times the volume of the sun. b. the volume of jupiter is approximately one hundred times the volume of the sun. c. the volume of the sun is approximately one thousand times the volume of jupiter. d. the volume of the sun is approximately one hundred times the volume of jupiter.