How would the gravitational force between Earth and an astronaut change as the astronaut traveled FURTHER away from Earth? (highlight your answer) a) Gravitational pull on the astronaut would increase
b) Gravitational pull on the astronaut would decrease
c) There would be no change in the gravitational pull between the Earth and the astronaut
d) Gravitational pull on Earth would increase

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: