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(a) In unit-vector notation, what is the sum of a = (3.2 m )î + (3.7 m )ĵ and b = ( − 12.0 m )i + (8.0 m )ĵ. What are (b) the magnitude and (c) the direction of a + b (relative to i)? (a) Number -8.8 (b) Number 14.6 (c) Number i-53.1 î+ 11.7 Units m Units °(degrees) ĴUnits m

(a) In unit-vector notation, what is the sum of a = (3.2 m )î + (3.7 m )ĵ and b = ( − 12.0 m )i + (8.0 m )ĵ. What are (b) the magnitude and (c) the direction of a + b (relative to i)? (a) Number -8.8 (b) Number 14.6 (c) Number i-53.1 î+ 11.7 Units m Units °(degrees) ĴUnits m

Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter1: Introduction And Vectors
Section: Chapter Questions
Problem 44P: Three displacement vectors of a croquet ball are shown in Figure P1.44, where |A|=20.0units,...
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I'm not sure what I did wrong in the attached pciture. I took the inverse tan of i/j) to get the angle, it says it has to be 3 sig figs.

Current Attempt in Progress Your answer is partially correct. (a) In unit-vector notation, what is the sum of a = the magnitude and (c) the direction of a + b (relative to 1)? (a) Number -8.8 (b) Number (c) Number 14.6 Hint -53.1 eTextbook and Media î+ (3.2 m 2 m )î+ (3.7 m ) ĵ and b = ( − 12.0 m )i + (8.0 m )Ĵ. What are (b) Units 11.7 Units m °(degrees) Ĵ Units 3 Assistance Used Assistance Used
Transcribed Image Text:Current Attempt in Progress Your answer is partially correct. (a) In unit-vector notation, what is the sum of a = the magnitude and (c) the direction of a + b (relative to 1)? (a) Number -8.8 (b) Number (c) Number 14.6 Hint -53.1 eTextbook and Media î+ (3.2 m 2 m )î+ (3.7 m ) ĵ and b = ( − 12.0 m )i + (8.0 m )Ĵ. What are (b) Units 11.7 Units m °(degrees) Ĵ Units 3 Assistance Used Assistance Used
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