Please help me with these.

Consider the circuit shown in the gure below. (Assume R1 = 10.5 0, R2 = 2.65 0., and V = 6.20 V.) CD (a) Calculate the equivalent resistance of the R1 and 5.00-9. resistors connected in parallel. |:|Q (b) Using the result of part (a), calculate the combined resistance of the R1' 5.00-0. and 4.00-0 resistors. Q (c) Calculate the equivalent resistance of the combined resistance found in part (b) and the parallel 3.0042, resistor. Q (d) Combine the equivalent resistance found in part (c) with the R2 resistor. 0 (e) Calculate the total current in the circuit. A (f) What is the voltage drop across the R2 resistor? V (g) Subtracting the result of part (1') from the battery voltage, find the voltage across the 3.00-9 resistor: V (h) Calculate the current in the 3.004) resistor. A [-/1 Points] DETAILS SERCP11 18.3.P.015. Find the current in the 12-0 resistor in the figure below. (Assume R, = R3 = 3.6 0, R2 = R = 7.8 02, AV = 10 V.) RZ R1 RA R3 4.0 0 2.0 0 12 0 W + AVA current I = 14 A is directed along the positive x-axis and perpendicular to a magnetic field. A magnetic force per unit length of 0.19 N/m acts on the conductor in the negative y-direction. Calculate the magnitude and direction of the magnetic field in the region through which the current passes. magnitude T direction +z direction +z direction Need Help? Read It Watch It [-/4 Points] DETAILS SERCP11 19.5.P.028. MY NOTES ASK YOUR TEACHER PRACTICE AN At a certain location, Earth has a magnetic field of 0.60 x 10-# T, pointing 750 below the horizontal in a north-south plane. A 14.1 m long straight wire carries a 16 A current. (a) If the current is directed horizontally toward the east, what are the magnitude and direction of the magnetic force on the wire? magnitude IN direction ---Select--- (b) What are the magnitude and direction of the force if the current is directed vertically upward? magnitude N direction ---Select--.Mass m = 1.95 kg is suspended vertically at rest by an insulating string connected to a circuit partially immersed in a magnetic field as in the figure below. The magnetic field has magnitude B = 2.70 T and the length { = 0.660 m. X X X X x X XXXXXX * * * X x x XX X X X R m HINT (a) Find the current I (in A). A (b) If & = 115 V, find the required resistance R (in (). Need Help? Read it Watch It 18. [3/6 Points] DETAILS PREVIOUS ANSWERS SERCP11 19.7.OP.048. The figure below shows two vertical, parallel wires separated by a distance d = 12.0 cm. The left wire carries a current of I = 5.45 A upward, while the right wire carries a current of the same magnitude directed downward. Point , is a distance d to the right of the right wire, and point P, is a distance 2d to the left of the left wire. P2 - 2d (a) What are the magnitude (in T) and direction of the net magnetic field at a point midway between the wires? magnitude T direction into the page vv into the page (b) What are the magnitude (in T) and direction of the net magnetic field at point P1, to the right of the right wire? magnitude direction out of the page out of the page (c) What are the magnitude (in T) and direction of the net magnetic field at point P2, to the left of the left wire? magnitude direction out of the page out of the page