Question #50cca

↳Redirected from "Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra. I seriously don't know anything about electron affinity all ik that it can buy another element"
1 Answer
ali ergin
Feb 14, 2016

#T~=918,075N" left tension"#
#R~=844,443N" right tension"#

Explanation:

enter image source here
#"you may use sine theorem:"#
#535/sin145=T/sin100#
#535/sin 35=T/sin 80#
#535/(0,574)=T/(0,985)#
#T=(535*0,985)/(0,574)#
#T~=918,075N#
#"for the right tension:"#
#535/sin145=R/sin 115#
#R=(535*sin 115)/sin 145#
#R=(535*0,906)/0,574#
#R~=844,443N#

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