Please help I’m failing class

How does the principle of federalism affect the us government

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

Jesse james, a 20-year old, was arrested for killing a police officer. as a newly elected prosecutor, you are responsible for prosecuting mr. james. you announce your decision not to seek the death penalty in this case, but under your state’s law, the offense charged is considered special circumstances, which would qualify as a death penalty case. your decision does not sit well with the law enforcement community. what are the potential hearings that might be involved in this case? be sure to describe them from the time of arrest through appeal.