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appa
Work functions maths question help needed
appa Leaving Cert Physics5

Need help with this maths question


5 Comments
Bobr12
Bobr12
take away 4.15 from 3.68 to get kinetic energy on its own in the photoeletric equation. then convert this answer to joules by using your formula and tables book. then isolate v and solve for it ! hope this helped
Bobr12
Bobr12
4.15 is equivalant to hf
Bobr12
Bobr12
hf = 0 + 1/2mv^2
Bobr12
Bobr12
ih yes and the mass in 1/2mv^2 is in your formula and tables under the constants
appa
appa
My guy appreciate that!
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