1. using a scale that measures force in newtons (n), weigh an object with a known mass. 2. record both the mass (m) and the weight (f) of the object. 3. calculate the mass of the earth (me) using the above equation. 4. how accurate is your result? the accepted value for the mass of the earth is me = 5.98x1024kg. calculate the percent error in your value.

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle

Which domain endings indicate websites that are most likely to be reliable sources? check all that apply. sites ending in .net

What is unusual about the iraq mountains ,in spite of their old age?