Two ends of an inextensible string of length 12m are attached to points aand b 1.2m apart, in the same horizontal plane. a mass 20kg is suspended from the middle point c of the string and the system is in equilibrium. calculate the tension on either arm of string

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j