In typical rockets the mass ratio is between 10 and 30. Imagine a rocket with a total mass of 1 ton and a mass ratio of 1000: when empty, it would only weight one kg, including its cargo, while when full it would need to contain 999 kg of fuel!
Benefits of Bee Propolis For Skin Apparently, natural bee propolis is considered good for younger, acne prone skin, as well as more mature skin. Itâs now being used as a wrinkle fighter by what seems to be a growing number of women.
Propolis contains as many as 300 active compounds. 1  These components were found to fight cancer in a variety of ways including: 2  Preventing the growth of new blood vessels to feed cancer cells (anti-angiogenesis) 3  Preventing the spread or metastasis of cancer from one organ to another. 4  Halting cancer cell division.