A mass of 0.22 kg is oscillating on the planet Tatooine at a small angle from a light string of length 0.30 m. with a period of 0.90 s.
What is the acceleration of gravity on Tatooine?

Calculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energycalculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energy