Answer:
Formation. Main-sequence stars, including the sun, form from clouds of dust and gas drawn together by gravity. ... The core that is left behind will be a white dwarf, a husk of a star in which no hydrogen fusion occurs. Smaller stars, such as red dwarfs, don't make it to the red giant state.
Explanation:
Answer:
B. mass, volume
Explanation:
Density refers to a physical property that is measured using a ratio of mass divided by volume so that two objects of the same size can still have very different density.
Answer:
Many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. We use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil.
Answer:
C
Explanation:
It's not A because you can't use a knife to cut an atom nucleus. Its size is not perceptible to the eye.
It's not B because when two nuclei collide and combine into one, it's call fusion.
It's not D because you can't have stronger forces than the ones holding the nucleus together.
The correct answer is C.
To fission, the nucleus needs to have at least two things: critical mass (only big ones can fission spontaneously) and instability (incorporate a neutron ).
I believe it's A. Nanotechnology.