Reference no: EM132776460

1.A duck flying due east passes over Atlanta,where the magnetic field of the Earth is 5.0 × 10^-5 T directed north. The duck has apositive charge of 4.0 × 10^-8 C. If the magnetic force acting on the duck is 3.30×10^-11 N upward, what is the magnitude of the duck's velocity?

2.A proton moves eastward in the plane of Earth's magnetic equator so that its distance from the ground remains constant. What is the speed of the proton if Earth s magnetic field points north and has a magnitude of 5.0×10^-5 T

3.A wire carries a 10.0 A current at an angle 90.0° from the direction of a magnetic field. If the magnitude of the magnetic force on a 5.00 m length of the wire is 15.0N, what is the strength of the magnetic field?

4.A thin 1.00m long copper rod in a uniform magnetic field has a mass of 50.0g. When the rod carries a current of 0.245A, it floats in the magnetic field. What is the field strength of the magnetic field?