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Work functions maths question help needed

appa — Leaving Cert Physics — — 5

Need help with this maths question

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 —

4.15 is equivalant to hf

Bobr12 —

hf = 0 + 1/2mv^2

Bobr12 —

ih yes and the mass in 1/2mv^2 is in your formula and tables under the constants

appa —

My guy appreciate that!

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