A conducting wire has a diameter of 0.8 mm and resistivity 1.6 x 10-8ohm-m. Calculate the length of this wire required to make a 2ohm coil.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

In a system, when potential energy decreases, then entropy also decreases. true false

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents