A group of students performed the same experiment that you did in class. They ob

Question

A group of students performed the same experiment that you did in class. They obtained the results that are displayed in red below. Analyze this data by performing the indicated calculations. Remember that there is a link to your lab manual at the bottom of this question, if you need to refer back to the lab background and introduction.

Use the exact values you enter to make later calculations.

Experiment 1

Setup

Procedure 1

To allow the magnetic field sensor to rotate in a horizontal circle, adjust the rotary motion sensor clamp so the angle indicator reads 90 degrees with the magnetic field sensor on top.

Put the dip needle in its horizontal orientation and position the dip needle directly below the rotary motion sensor. Align the case of the rotary motion sensor with the compass needle. Use the rotary motion sensor case as a reference to the general direction of the Earth's magnetic field. Remove the dip needle so its magnetic field won't interfere with the experiment.

Rotate the magnetic field sensor so the length of the probe is perpendicular to the direction of the Earth's field as indicated by the rotary motion sensor case. Slip the zero gauss chamber over the magnetic field sensor probe and press the tare button on top of the magnetic field sensor. This will ensure that the maximum on the magnetic field sensor will not be exceeded during the experiment.

With the magnetic field sensor still aligned as in Part 3, click 'Start' in DataStudio. Slowly and steadily rotate the rotary motion sensor pulley through 360 degrees. Be sure to rotate in the direction that gives positive angles. DataStudio will automatically stop when 360 degrees is reached.

To eliminate magnetic noise from electrical circuits, enter a smoothing factor into the DataStudio calculator. [For example, try B = smooth(8,smooth(8,x))]. Click 'Accept' in the calculator window. You should see the graph update with smoother data.

Maximum value of the horizontal magnetic field = 0.310 G

Procedure 2

To allow the magnetic field sensor to rotate in a vertical circle, adjust the rotary motion sensor clamp so the angle indicator reads zero degrees. Keep the rotary motion sensor aligned with the Earth's field as shown by the compass needle (dip needle).

Point the magnetic field sensor probe horizontally.

Put the end of the magnetic field sensor all the way into the zero gauss chamber and press the tare button on the magnetic field sensor.

With the magnetic field sensor still horizontal, click 'Start' in DataStudio. Slowly and steadily rotate the rotary motion sensor pulley through 360 degrees and until the program automatically stops recording data.

Maximum value of Earth's total magnetic field = 0.602 G

Lab Report 1
Use the horizontal component and the total magnetic field to calculate the dip angle.

cos =

Explanation / Answer

According to the concept of the magnetism

The horizontal earth magnetic field BH=Bcos

Given that

The horizontal magnetic field Bh=0.310 G

The total earth magnetic field B=0.602 G

Now we find the angle of the dip

Cos=0.310/0.602=0.515

Angle of the dip =cos^-1(0.515)=59°

Therefore the angle of the dip =59°

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