Why are very high temperatures and pressures required for fusion to occur? to generate the neutrons that are needed to break the nuclei

to overcome the repulsion between the protons in the nuclei that join

to maintain the proper conditions to keep the chain reaction going

to keep the uranium fuel separate from the control rods

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas