(grade 10 work )
A particle has 3,98×10-¹³ of energy and has a wavelength of 5 ×10-¹³
Use the statement above
What is the speed of a photon
To find the speed of a photon, we can use the formula:
speed of light (c) = frequency (f) × wavelength (λ)
Given that the energy of the particle is 3.98×10^-13 and the wavelength is 5x10^-13, we can calculate the frequency using the equation for energy of a photon:
E = hf
3.98×10^-13 = h(5×10^-13)
Solving for h (Planck's constant):
h = 3.98×10^-13 / 5×10^-13
h = 0.796
Now, we can find the frequency using the equation:
c = fλ
c = (0.796)(5×10^-13)
c = 3.98×10^8 m/s
Therefore, the speed of the photon is 3.98×10^8 m/s.