Two similar ballon are filled with gas. One with hydrogen and the other with oxygen. Which one will go down first and why?
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If five forces act towards the same point on a body at angles of 60, 120, 180, 240 and 270 degrees and their respective magnitudes are 60N, 40N, 30N, 25N and 20N. Determine whether this system of forces is in equilibrium; find the resultant.
A car travels 20km due north and then 35km in a direction 60 degree west of north. Find the magnitude and direction of the resultant.