Thursday
July 24, 2014

Posts by Thien


Total # Posts: 3

Physics
Nevermind Got it Block has two forces acting on it Horizontal force is the centripetal force acting towards center of circle Vertical force is M x G To get angle, its inverse Tan (MV^2/RMG)

Physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20.0 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 83.9 m), the block swings toward the outside of th...

Chemistry
density is mass/volume. Since they give you the mass of 55.81g already, you need to find the volume which is 24.7mL-17.6mL=7.10mL. 55.81g/7.10mL= 7.86 g/mL. mL=cm^3 so it becomes 7.86 g/cm3 or 7.86 gxcm^-3. The metal that matches this density is Iron.

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