Kütlesi 8 ton olan durgun bir roket aldığı 1 ton yakıtı yaka- rak yere göre 2000 m/s hızla dışarı atıyor.
Buna göre roket kaç m/s hız kazanır?

Answerapplying a direct current to a non magnetic material in order to create a electromagnetic field; plz check first good luck;

Ithink the answer is fusion 

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.