Question

I'm giving 50 points for you to help me out please

i've been stuck on this for a day, please don't troll me!

Answer 1

K ≈ 1.10 × 10⁻¹⁸ J

Step-by-step explanation:

Apply the Photoelectric Equation of Einstein:

h × f = K - W

Where:

h: Planck's constant = 6,62607015 × 10⁻³⁴ m². kg / s;

K: kinetic energy;

W: work function.

So:

h × f = K - W

6,63 × 10⁻³⁴ × 9.62 × 10¹⁴ = K - (2.90 × 1.6×10⁻¹⁹)

K = 6,63 × 10⁻³⁴ × 9.62 × 10¹⁴ + 2.90 × 1.6×10⁻¹⁹

K ≈ 1.10 × 10⁻¹⁸ J