I need help with question Four - Six please

Next, note the directions of Beath and Bwire: Q4. Estimate Bwine for the straight wire that you used in this activity: Direction of Beath ~ left to right along direction of wire (see highlighted note on previous current used: I = page The earth has a horizontal component of magnetic field strength, Direction of Buine ~ (use the right hand rule, Beach ~ 0.000025 Tesla or 2.5 x 10-ST. noting the direction of "I" in Q2) First, make an estimate of the magnitude of Brice First, make an estimate of the magnitude of Brice: 06. Using a suitable scale, say 1 inch = 10- T, on a piece of paper draw the two vectors representing Beath and Bie tail-to-tail. Now draw in the resultant B = Brice + Beat using the For a straight wire: Bwire = - 4o _ Equation 1 parallelogram method of vector addition. Measure the length of the resultant vector, then take a 2n d picture of your drawing and insert below (on the next page). where Bwine is the magnetic field strength in Tesla (T), po is the magnetic permeability of free space, Mo = 4x x 10-7 Tm/A, I is the electric current in amperes (A) and d is the distance from the Compare your values. wire in meters (m). Magnitude of resultant vector from your values to Q5, [B| = To estimate the distance involved, the typical size of a laboratory compass is about the same as a quarter. Place a quarter next to a relatively thin wire, for example the wire connecting your (Recognize that Bwire and Bearth form the sides of a right angle triangle.) keyboard to your computer, your laptop power cable, or something similar. Use a ruler to measure the distance from the center of this wire to the center of the quarter: Magnitude corresponding to the length of your resultant arrow, B = distance from the wire: d = These numbers should be approximately equal. If they are not discuss why you think they are not correct and how you need to correct your calculation. Now use Equation 1 to calculate the magnetic field strength of your wire: Bain = Q5. As we have just mentioned, Beats would affect the direction of the compass needle in Figure from (Q2). In other words, the actual direction the needle would point would come from the resultant magnetic field: B = Bruce + Bean. i.e., the vector sum of the magnetic field due to the wire and the earth. Let's determine the actual direction of compass needle - given by the direction of B - that you would observe when the compass was ON TOP OF the wire in Figure from (Q2), following the instructions given below. First, note the magnitudes of Beath and Bwire: Magnitude of Beath ~ The earth has a horizontal component of magnetic field strength, Bearth ~ 0.000025 Tesla or 2.5 x 10-5 T. Magnitude of Buin ~ (see Q4)