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To increase the intensity of a wave by a factor of
50, by what factor should the amplitude be
increased?

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What is the sum of the following four vectors in (a) unit-vector notation, and as (b) a magnitude and (c) an angle? Positive angles are counterclockwise from the positive direction of the x axis; negative angles are clockwise. À = (2.00 m )i + (3.00 m )} B = 4.00 m, at 65.0⁰ 7 = ( - 4.00 m D = 5.00 m, at -235⁰ ¹)ì – (6.00 m )Ĵ
A vector has a magnitude of 2.8 m and points in a direction that is 135 counterclockwise from the a axis. You may want to review (Page 71).
ANY HELP WOULD BE APPRECIATED, THANKS
Suppose A = (-2.33 m)i + (3.79 m)j, B = (2.87 m)i + (-4.8 m)j + (2.18 m)k, and D = (-2.99 m)i + (-4.24 m)j.. What is the angle, in degrees, between D and A