Questions 1,2,3 please and thank you so much

1. A rod 0.24 m long moves at 0.56 m/s through a magnetic field of 0.72 T at right angles to both its own length and the direction of the field. What is the potential difference between the ends of the rod? 2 marks 2. A copper bar 30.0 cm long is perpendicular to a magnetic field of 0.80 T and moves at right angles to both the field and the wire length, producing an EMF of 0. 12 V in the bar. What is the bar's speed? 3. A wire 8.0 cm long moves with a velocity of 2.4 m/s through a magnetic field directed into the page, as shown on the diagram below. X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X a) If the induced EMF in the wire is 0.13 V, what is the strength of the magnetic field that created it? a) 2 marks b) Which end of the wire will become positively charged? Label directly on the diagram. I mark