(ii) the pilot of an airplane traveling 180 km/h wants to
drop supplies to flood victims isolated on a patch of land
160 m below. the supplies should be dropped how many
seconds before the plane is directly overhead?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Which one of the following research methods can show cause and effect

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing