What is the difference between copernicus's and kepler's description of planetary orbits

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

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.