Given this information what equation would I use to find

Last updated: 6/19/2023

Given this information what equation would I use to find frequency I already know hkw to concert MT to Joules but I dont know which equation id use because V h c guves error bc the 10 34 in the denominator Target Earth Composition Rock Ice Iron Diameter 1 km Results impact into Velocity 20 KMIS Energy Released 59554 MT mauritanian impact into 19518 MT Sudan impact into 1951 T Frequency