Given two vectors A= 4.00i + 7.00jand B= 5.00i-2.00ja. Find the magnitude of each vector. b.Find the vector differenceC= A –B, give its magnitude and direction. c. Draw the vector A, B and C. d.Find the scalar product of A. B e. Find the vector productD= A x B, draw D and give its magnitude.

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Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm

Two solutions of the same uv-absorbing molecule were analyzed by uv-vis spectroscopy on the same instrument using 1 cm pathlength cells. use data from the table to calculate by what percentage the concentration of solution b is compared to that of solution a. sample absorbance at 315nm a 0.45 b 0.80