describe an experiment to demonstrate that a. solid magnesium does not conduct electricity b. Molten sodium does conduct electricity c. solid sodium chloride is hard and brittle​

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

If a solution had a ph of 7 what is the solution

What human activity increases beach erosion?