BH10106009    高中 / 物理   

2015/07/18 19:21

Problem 3: Here are three vectors in meters: 1 d  = -3.0 i ˆ + 3.0 j ˆ +2.0 k ˆ 2 d  = -2.0 i ˆ - 4.0 j ˆ + 2.0 k ˆ 3 d  = 2.0 i ˆ + 3.0 j ˆ +1.0 k ˆ . What results from (a) 1 d ．( 2 d  + 3 d  ), (b) 1 d ．( 2 d  x 3 d  ), and (c) 1 d  x( 2 d  + 3 d  )?