It's about one-seventieth as heavy as a Rhinoceros
In other words, the weight of a Rhinoceros is 71 times 0.00000002950 megatonnes.(for Black rhinoceros, Diceros bicornis) (Adult, male)
An adult black rhinoceros weighs between 0.00000210 megatonnes. Rhinoceros are extremely aggressive — nearly one of every two males will die as a result of fighting with other rhinoceros.
It's about 70 times as heavy as a Football (American)
In other words, 0.00000002950 megatonnes is 71.764267414660 times the weight of a Football (American), and the weight of a Football (American) is 0.01393451136653 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 0.000000000396893323750 megatonnes and 0.0000000004252428468750 megatonnes. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
It's about 85 times as heavy as a Can of Soup
In other words, the weight of a Can of Soup is 0.012 times 0.00000002950 megatonnes.(for Campbell''s Condensed Tomato Soup, 317.9 ml)
A can of Campbell''s Tomato Soup weighs 0.000000000350 megatonnes. Cans have been used to store soup and other foods since their invention in 1913, but a dedicated can opener was not developed until cans began to use thinner materials — prior to that time, cans were usually opened using various blunt instruments and tools.
It's about one-ninetieth as heavy as The Tongue of a Blue Whale
In other words, the weight of The Tongue of a Blue Whale is 91 times 0.00000002950 megatonnes.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 0.00000270 megatonnes. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.
It's about 95 times as heavy as a Human Heart
It's about 100 times as heavy as a Hamster
In other words, the weight of a Hamster is 0.01 times 0.00000002950 megatonnes.(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
An adult Syrian hamster has a typical weight of about 0.000000000200 megatonnes. Known for transporting food in the pouches of their cheeks so that they can bury it later, some hamsters can store up to 0.0000000300 megatonnes of food in their borrows.
It's about one-one-hundred-fiftieth as heavy as a Hippopotamus
In other words, 0.00000002950 megatonnes is 0.00787 times the weight of a Hippopotamus, and the weight of a Hippopotamus is 127 times that amount.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 0.000003750 megatonnes. Appearances to the contrary, adult hippos cannot swim or float in water; they actually move by leaping and walking across lake bottoms at about 8 kph (5 mph).