You are given a transformer pictured below. what is the current through the secondary coil, if the number of turns in the primary coil is 86, the number of turns in the secondary coil is 85, the load resistance is 19 ohms, and the voltage input to the primary coil is 36 volts? you can assume that r1 has negligible resistance and that the transformer is ideal. give your answer in milliamps (non-negative & 3 significant digits).

Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude f due to the other. with time, charge gradually leaks off of both spheres. when each of the spheres has lost half its initial charge, the magnitude of the electrostatic force will be

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

If a balloon is taken outside on a very cold day, what will occur?