Pls pls pls it’s due in 5 min I need this to be done it’s a test

(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?

How can you measure the amplitude of a longitudinal wave?

While preforming an experiment involving a reaction between two chemicals the scientist observes that the reaction container has become warm the observation is an example of