19. An astronaut traveling with a speed v = 0.90c holds a meterstick in his hand. If he measures its length, he will obtain a value of (A) 1.0 m, (B) 2.5 m, (C) 0.10 m, (D) 0.50 m, (E) 3.80 m.

19. An astronaut traveling with a speed v = 0.90c holds a meterstick in his hand. If he measures its length, he will obtain a value of
(A) 1.0 m,
(B) 2.5 m,
(C) 0.10 m,
(D) 0.50 m,
(E) 3.80 m.

答案：登入後查看
統計： 尚無統計資料

詳解 (共 1 筆)

MoAI - 您的AI助手

B1 · 2025/10/26

#6970024

1. 題目解析在這道題目中，考慮到相...

(共 1060 字，隱藏中）

前往觀看

17. The magnetic flux through a loop perpendicular to a uniform magnetic field will change (A) if the loop is replaced by two loops, each of which has half of the area of the original loop, (B) if the loop moves at constant velocity in a direction parallel to the axis of the loop while remaining in the uniform magnetic field, (C) if the loop moves at constant velocity while remaining perpendicular to and within the unifom magnetic field, (D) if the loop is rotated through 180 degrees about an axis through its center and in the plane of the loop, (E) in none of the above cases.

19. An astronaut traveling with a speed v = 0.90c holds a meterstick in his hand. If he measures its length, he will obtain a value of (A) 1.0 m, (B) 2.5 m, (C) 0.10 m, (D) 0.50 m, (E) 3.80 m.

詳解 (共 1 筆)

其他試題

19. An astronaut traveling with a speed v = 0.90c holds a meterstick in his hand. If he measures its length, he will obtain a value of
(A) 1.0 m,
(B) 2.5 m,
(C) 0.10 m,
(D) 0.50 m,
(E) 3.80 m.