The X-15 rocket-powered plane holds the record for the fastest speed ever attained by a manned aircraft at 2020 m/s. At this speed, by how much is the 15.5 m-long aircraft length contracted? Hint: use binomial approximation

Aball horizontally thrown from a cliff at 8m/s

How do you know how many valence electrons an atom has?

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.