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• the process of selecting elements from a population, collecting data from them, and using it as representative of all those a researcher is interested in is referred to as
  
• the de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ . recall that wave number is defined by k=2π/λ . using the fact that λ=v/f , find the wave numbers k1 and k2 corresponding to frequencies f1 and f2 . express your answer as two expressions separated by a comma. use f1 , f2 , v , and π .
  
• true or false: it is legal to pass in florida if you believe it is safe, even if your view is obstructed.
  
• lee is creating a garden with the dimensions shown. he creates paths through the garden along , , and . which correctly compares the lengths of the paths? the path along is longer than the path along , and the path along is longer than the path along . the path along is longer than the path along , and the path along is longer than the path along . the path along is longer than the path along , and the path along is longer than the path along . the path along is longer than the path along , and the path along is longer than the path along .
  
• which two groups cooperated with the government to switch from peacetime to wartime production?
  
• a point charge of 5.7 µc moves at 4.5 × 105 m/s in a magnetic field that has a field strength of 3.2 mt, as shown in the diagram. what is the magnitude of the magnetic force acting on the charge? 6.6 × 10–3 n 4.9 × 10–3 n 4.9 × 103 n 6.6 × 103 n
  
• when president nixon agreed to turn over only some of the watergate tapes to the special prosecutor, the prosecutor refused to accept any of the tapes. the prosecutor’s case against nixon was heard by the supreme court. the supreme court put an end to the watergate senate hearings. the supreme court took charge of conducting the watergate hearings.
  
• which functions have a y-intercept that is greater than the y-intercept of the function g(x) = |x + 3| + 4? check three options. f(x) = –2 (x – 8)2 h(x) = –5 |x| + 10 j(x) = –4(x + 2)2 + 8
  
• a rectangle is graphed on a coordinate grid. which transformation will result in a rectangle that is not congruent to the original rectangle?
  
• a small, jagged particle with a density of 1.2 g/cm3 deposits on the ground before a large, round particle with a density of 0.82 g/cm3. which most likely influences the rate of deposition of the jagged particle?