A 0.35 kg ball is swung around a tether pole where the 1.4 m rope makes a 30° angle to the pole. What is the force of tension in the rope for the ball to have a circular speed of 3.1 m/s?
[5 marks] * the motion is around horizontally so it sweeps out a conical shape

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf