Problem 1: Numerical Differentiation (Forward / Central / Backward) An airplane is being tracked by a radar, and data is taken every two seconds in polar coordinates and r. t (s) 200 202 204 206 208 210 (rad) 0.75 0.73 0.71 0.68 0.64 0.60 r (m) 5115 5360 5580 5902 6024 6312 Calculate the velocity of the plane as a function of time, where the velocity V is given by: Please compute the derivatives using the most accurate finite-difference based techniques and comment on the choices you made (why you chose to use a certain method at any given point). Please, note that

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.