Please help me with this. Question 4 of 10 Which procedure would best demonstrate that a moving magnet causes an electric current to flow in a wire coil? O A. Connect a wire coil to an ammeter. Move a bar magnet into and out of the wire coil as you observe the ammeter. B. Connect a wire to a lightbulb, a battery, and a magnet on a rotating turntable. Turn on the switch as you observe the lightbulb. C. Connect a battery to a wire and an ammeter. Move a bar magnet in circles around the battery as you observe the ammeter. D. Connect a wire to a lightbulb and a bar magnet. Turn on the switch as you observe the lightbulb.

Which best describes how johannes kepler developed his laws of planetary motion

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.