Hip Wear on the Moon. (a) Use data from Appendix F to calculate the acceleration due to gravity on the moon. (b) Calculate the friction force oil a walking 65-kg astronaut carrying a 43-kg instrument pack on the moon if the coefficient of kinetic friction at her hip joint is 0.0050. (c) What would be the friction force oil earth for this astronaut?
Astronomy Chapter 2 Terms to know ● Constellation A region of the sky with well defined borders ● Zenith The point directly overhead ● Horizon All points 90° away from the zenith ● Meridian Line passing through zenith and connecting north and south points on the horizon ● Angular size Physical size x [360°/ (2��� x dist.)] ● Latitude Position north or south of equator ● Longitude Position east or west of prime meridian ● Aphelion 1.0617 AU (July 47) ● Perihelion 0.9833 AU (January 25) ● Solar day 24hrs ● Sidereal day 23hrs 56 mins ● Sidereal month 27.3 days (Moon’s orbital period around the Earth) ● Synodic month 29.5 days ● Synchronous rotation A rotation with each orbit Patterns in the sky We can see more than 2000 stars with the naked eye T