A particle undergoes two displacements. The first has a magnitude of 150 cm and makes an angle of 120° with
the positive x axis. The resultant displacement has a magnitude
of 140 cm and is directed at an angle of 35.0° to
the positive x axis. Find the magnitude and direction of
the second displacement.

(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?