you are working on the 7th floor of a high rise building. a window cleaner is working on windows 12 storeys above you. the average height of one storey is 3.5m. if the window cleaner drops a squeegee that has a mass of 750g, how fast will it be moving when it passes the window you are working on?

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

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Which is an example of an exothermic process?