Who here is a Slytherin or Griffindor or Ravenclaw or Hufflepuff? I am a Slytherin!

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k