The picture represents the process that produces most of the energy used by living organisms on Earth.
Which process is represented in the picture?
A)The magnetic attraction between two hydrogen nuclei.
B)The fusion of hydrogen nuclei to produce a helium nucleus in the core of
the Sun.
C)The fission of hydrogen nuclei to produce a helium nucleus in the core of
the Sun.
D) The chemical reaction between hydrogen nuclei to produce a helium
nucleus in Earth's atmosphere.

Auniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.60 cm . a proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 3.20×10-6 s. 1-find the magnitude of the electric field. use 1.60×10-19c for the magnitude of the charge on an electron and 1.67×10-27kg for the mass of a proton 2-find the speed of the proton when it strikes the negatively charged plate