If a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, it’s total energy is

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

What is the formula that this ionic compounds could form sr2+p3-o2-

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?