What additional information is obtained from measurements on an ordinal scale compared to measurements on a nominal scale? comparison of the magnitudes of two measurements (such as one being twice as large as the other) direction of difference (greater or less) between two measurements magnitude of difference between two measurements

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

Explain why you think this diagram shows what happened to the carbon in the biodome.

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?