A stone from the top of a building and it strikes the ground in 4.2 s. How tall is the building?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

What part of the ear is names after tools, such as the hammer and the anvil?

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?