1. [-/8 Points] DETAILS MY NOTES SERCP11 19.3.P.007. 0/5 Submissions Used ASK YOUR TEACHER Electrons and protons travel from the Sun to the Earth at a typical velocity of 4.18 x 10 m/s in the positive x-direction. Thousands of miles from Earth, they interact with Earth's magnetic field of magnitude 3.05 x 1078 Tin the positive z-direction. Find the magnitude and direction of the magnetic force on a proton. Find the magnitude and direction of the magnetic force on an electron. RN (a) magnitude of the magnetic force on a proton (in N) I (b) direction of the magnetic force on a proton O +x-direction O x-direction O +y-direction O y-direction O +z-direction O z-direction (c) magnitude of the magnetic force on an electron (in N) o (d) direction of the magnetic force on an electron O +x-direction O -x-direction O +y-direction O -y-direction O +z-direction O -z-direction Need Help? Read It Watch It2. [-/6 Points] DETAILS MY NOTES SERCP11 19.7.0P.047. 0/5 Submissions Used ASK YOUR TEACHER At what distance (in mm) from a long, straight wire carrying a current of 21 A will the magnitude of the magnetic field be 2.3 mT? o Need Help? |[Reaai_ Submit Answer 3. [-/7 Points] DETAILS MY NOTES SERCP11 19.7.P.043. 0/5 Submissions Used ASK YOUR TEACHER A lightning bolt may carry a current of 1.00 X 10% A for a short time. What is the resulting magnetic field 70 m from the bolt? Suppose that the bolt extends far above and below the point of observation. T Need Help? [[_Readw_J| Submit Answer 4. [-/9 Points] DETAILS MY NOTES SERCP11 20.1.P.003. 0/5 Submissions Used ASK YOUR TEACHER The figure below shows three edge views of a square loop with sides of length = 0.220 m in a magnetic field of magnitude 1.50 T. Calculate the magnetic flux (in Wb) through the loop oriented perpendicular to the magnetic field, 60.0 from the magnetic field, and parallel to the magnetic field. HINT (a) perpendicular to the magnetic field S (b) 60.0 from the magnetic field T w (c) parallel to the magnetic field T w Need Help? [ Rsadit ] 5. [-/7 Points] | DETAILS || MY NOTES I SERCP11 20.2.P.011. 0/5 Submissions Used | ASK YOUR TEACHER I Inductive charging is used to wirelessly charge electronic devices ranging from toothbrushes to cell phones. Suppose the base unit of an inductive charger produces a 1.40 x 10737 magnetic field. Varying this magnetic field magnitude changes the flux through a 12.0-turn circular loop in the device, creating an emf that charges its battery. Suppose the loop area is 3.50 x 10~* m? and the induced emf has an average magnitude of 5.10 V. Calculate the time required (in s) for the magnetic field to decrease to zero from its maximum value. CR g s Need Help? Submit Answer 6. [-/8 Points] DETAILS MY NOTES SERCP11 20.5.P.038. 0/5 Submissions Used ASK YOUR TEACHER A solenoid with 505 turns has a length of 5.00 cm and a cross-sectional area of 2.60 x 10~ mZ. Find the solenoid's inductance and the average emf around the solenoid if the current changes from +4.00 A to 4.00 A in 6.83 x 107 %s, LIl N (a) the solenoid's inductance (in H) L u (b) the average emf around the solenoid (in V) o 7. [-/8 Points] DETAILS MY NOTES SERCP11 21.7.OP.043. 0/5 Submissions Used ASK YOUR TEACHER A transformer has a primary coil with 300 turns of wire and a secondary coil with 1,500 turns. An AC voltage source connected across the primary coil has a voltage given by the function Av = (200 V)sin(wt). What rms voltage (in V) is measured across the secondary coil? Need Help? Read It Submit Answer 8. [-/7 Points] DETAILS MY NOTES WACOLPHYSAV1 21.P.036. 0/5 Submissions Used ASK YOUR TEACHER How fast can the 170 A current through a 0.240 H inductor be shut off if the induced emf cannot exceed 79.0 V? S Submit