In the early morning hours of june 14, 2002, the earth had a remarkably close encounter with an asteroid the size of a small city. the previously unknown asteroid, now designated 2002 mn, remained undetected until three days after it had passed the earth. suppose that at its closest approach, the asteroid was 75900 miles from the center of the earth -- about a third of the distance to the moon. (a) find the speed of the asteroid at closest approach, assuming its speed at infinite distance to be zero and considering only its interaction with the earth. km/s (b) observations indicate the asteroid to have a diameter of about 2.0 km. estimate the kinetic energy of the asteroid at closest approach, assuming it has an average density of 3.33 g/cm3. (for comparison, a 1-megaton nuclear weapon releases about 5.6 multiplied by 1015 j of energy.)

What elements are found in the inner and out core of the earth? the correct layers of earth's interior from the top to the center? what is the unwanted material that is removed from a mine called? how much stronger is an earthquake that registers 5 on the richter as opposed to 2? what occurs at a convergence plate boundary? the majority of the the earth's rock what is the most common element found in the earth's crust? what element is found in pyrite that contributes to acid mine drainage? why must mining companies post bond prior to permitting? how are bacteria being used in treating effluent from mines? what is a problem of acid mine drainage in rivers and soils? what do tectonic plates move on? why is gold smelting so damaging? how are artesian wells formed? where is dammed water colder than the river it flows into? what is one of the problems of uncontained aqueducts? what is the largest use of industrial water? underground sand and gravel formations that can store water? what type of water test measure acidity? which type of water test for cloudiness from suspended solids? what water test measures the amount of calcium and magnesium? these are all problems of coal power plants all of the following are advantages of riparian lands along rivers what type of water would be the warmest and have the least amount of dissolved oxygen? the zone of aeration is

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

What’s #16 asking me and how do i solve it?