Many people mistakenly believe that the astronauts who orbit the Earth are "above gravity." Calculate g for space shuttle territory, 290 kilometers above the Earth's surface (dashed line in sketch). Earth's mass is 6 1024 kg, and its radius is 6.38 106 m (...
October 5, 2013
Surprisingly, very few athletes can jump more than 2.7 ft (0.82 m) straight up. Use d = 1/2 gt2 and solve for the time one spends moving upward in a 0.82 m vertical jump. Then double it for the "hang-time" -- the time one's feet are off the ground. Can you ...
September 14, 2013
Which of the following statements is true? A. all trapezoids are similar B.all isosceles triangles are the same C.all rectangles are similar D.all equilateral triangles are similar
December 6, 2012
how does a Dichotomous Key work. Thank you for using the Jiskha Homework Help Forum. Be sure to visit the following sites: 1. http://students.ed.qut.edu.au/n2364379/MDB377/DichotomousKey.html 2. (Broken Link Removed) 3. http://www.enchantedlearning.com/subjects/plants/activity...
July 24, 2007