For Problems 3, 4, and 5 please answer completely and explain what you are doing and why.

Problem 3:

Two long, straight wires separated by 0.10 m carry currents of 18 A and 6 A in the same direction as shown. Are these two wires repelling or attracting each other (justify your answer)? What is the magnitude of this force? What is the direction of the magnetic field at the point? What is its magnitude? 18 A 6 A P 0.05 m I 0.10 mConsider the circuit (all resistors are in Ohms). Find I], 12, and 13 (15 points). The 16 V supply has a built-in safety circuit breaker. If the current delivered by that supply exceeds 2.0 Amps, it will shut off. Determine if the supply remains on or off in this circuit. 12V 4%?416; a | 13' 12V A ray of light from a laser is incident on a 45 4590 prism of unknown material. The incident ray makes an angle of 35 with the surface of the prism. The ray in the material follows a path that is parallel to the bottom side (hypotenuse) of the prism. a) Find the index of refraction of the unknown material and nd the angle that the ray makes, as it leaves the prism, with respect to the normal to the surface. b). The prism is now submersed in water (11:1.333). The ray (in the water) is incident on the surface of the prism such that the ray in the prism is again parallel to the bottom side (hypotenuse) of the prism. Using the index of refraction found in part a), trace the ray entering and leaving the prism and determine the angle of incidence and the angle of exit of the beam in this case