Two resistanceless rails 32 cm apart rest on a 6.0° ramp. They are joined at the bottom by a 0.63 resistor, and at the top a copper bar of mass 0.040 kg (ignore its resistance) is laid across the rails. The whole apparatus is immersed in a vertical 0.61 T field. What is the terminal (steady) velocity of the bar as it slides frictionlessly down the rails?
________m/s