Question

The
thresold
frequency myunot =7×10to the power of 14 second inverse
calculator kinetic energy of an electron emitted​

Answer 1

Answer:

Explanation:

This is not full question

In this vo = 1 × 10*15

V= 7 × 10*14

V = .7 × 10 * 15

The formula is ,

hv-hvo = 1/2mv*2

h(v-vo)=1/2mv*2=KE

6.6 × 10* -34(1×10*15 - .7 × 10*15)= KE

6.6 × 10* -34 ×10*15(1-.7)= KE

6.6 × 10 * -34 + 15 × .3 = KE

6.6 ×.3 × 10* -19 = KE

1.98 ×10*-19 =,KE

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