Question

I really need these questions answered ... i wouldreallyappreciate it ... Thank you

1. Two parallel conductors each of 0.50m length, seperatedby5.0e-3m and carryoing 3.0A in opposite directions, willexperiencewhat type and magnitude of mutal force? (magneticpermeability inempty space μ₀= 4πe-17 Txm/a)

2. A horizonal wire of length 3.0 carries a current of6.0A andis oriented so that the current direction is50^o S of W.The Earth's magnetic field is due north atthis point and hasstrength of 0.14e-4T. What is the direction ofthe force on thewire?

3. A proton moving at speed of 3.8e16 m/s cuts across thelinesof a magnetic field at an angle of 70^o. thestrength ofthe field is 0.25e-4T. what is the magnitude of theforce acting onthe proton? (q_p =1.6e-19C)

4. A rectangular coil (0.20m X 0.80m) has 200 turns and isinauniform magnetic field of 0.30T. if the orientation of the coilisvaried through all possible positions, the maximum torque onthecoil by magnetic forces is 0.080 N x m. What is the current inthecoil?

5. An airplane with a wingspan of 60.0m files paralleltoEarth's surface at a point where the downward component oftheEarth's magnetic field is 0.400e-4T. If the inducedpotentialbetwen wingtips is 0.900V, what is the plane speed?

6. A ping pong ball covered with a conducting graphitecoatinghas a mass of 5.0e-3kg and a charge of 4.0 μC. Whatelectric fielddirected upward will exactly balance the weight ofthe ball? (9.8m/s²)

7. A superconducting wire carries a current of10⁴A. Find the magnetic field at a distance of 1.0m fromthe wire.(μ_o = 4πe-7 T x m/A)