A ransom note was found and the police need your help. They are backlogged with work and hopes your knowledge of chemistry can be put to use. There are three suspects who wrote the ransom note, and
their pens have been confiscated. To protect their identities, we'll refer to these students simply as
Suspects 1, 2, and 3. Suspect 1 had the permanent marker. Suspect 2 had the black crayola. Suspect 3
had the black Vis A Vis marker. Determine which suspect's pen, if any of them, was used to write the
ransom note.

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?