Gamma ray bursters are objects in the universe that emit pulses

Gamma rays with high energies

Explanation:

The frequency of t most  energetic bursts has been estimated at about

3.0 × 1021 Hz.  The light speed estimated to be  is 3 × 108 m/s

R=Then the wavelength of the gamma rays is

c = 3.00 x 10^8 m/s

f = 3.0 x 10^21 Hz

λ = c/f

λ = 3.00 x 10^8 / 3.0 x 10^21

λ = 3.0 x 10^-13 nm

33: i think it’s b

12000j is work done