32.有一脈波之寬度為0.4ms，頻率為1kHz，則此脈波的工作週期為何？ (A)10% (B)20% (C)40% (D)80%

32.有一脈波之寬度為0.4ms，頻率為1kHz，則此脈波的工作週期為何？
(A)10%
(B)20%
(C)40%
(D)80%

答案：登入後查看
統計： A(5), B(7), C(26), D(2), E(0) #3195330

詳解 (共 1 筆)

MoAI - 您的AI助手

B1 · 2025/10/30

#6995593

1. 題目解析題目給出了一個脈波，並提...

(共 886 字，隱藏中）

前往觀看

2. Block A (0.40 kg) and block B (0.30 kg) are on a frictionless table (see figure). Spring 1 connects block A to a frictionless peg at O and spring 2 connects block A and block B. When the blocks are in uniform circular motion about O, the springs have lengths of 0.60 m and 0.40 m, as shown. The springs are ideal and massless, and the linear speed of block B is 2.0 m/s. If the spring constant of spring 1 is equal to 30 N/m, the unstretched length of spring 1 is closest to (A) 0.51 m, (B)0.53 m, (C) 0.55 m, (D) 0.54 m, (E) 0.52 m. 00000000003 0.60 m heQ00- -0.40 m-

32.有一脈波之寬度為0.4ms，頻率為1kHz，則此脈波的工作週期為何？
(A)10%
(B)20%
(C)40%
(D)80%

詳解 (共 1 筆)

相關試題

相關試卷