3. A force acting on an object moving along the x axis is given by Fx = (14x − 3.0x²) N, where x is in m. How much work is done by this force as the object moves from x = −1 m to x = +2 m? (A) +12 J (B) +28 J (C) +40 J (D) +42 J (E) −28 J

3. A force acting on an object moving along the x axis is given by F_x = (14x − 3.0x²) N, where x is in m. How much work is done by this force as the object moves from x = −1 m to x = +2 m?
(A) +12 J
(B) +28 J
(C) +40 J
(D) +42 J
(E) −28 J

答案：登入後查看
統計： 尚無統計資料

詳解 (共 1 筆)

木公診間裝潢中

B1 · 2026/04/19

#7345119

A force acting on ...

(共 204 字，隱藏中）

前往觀看

10. Two tanks of gas, one of hydrogen, H₂, and one of helium, He, contain equal masses of gas. The gram-molecular mass of He is twice that of H₂. Both tanks of gas are at the same temperature, 293 K. Which statement(s) below is(are) correct when we ignore vibrational motion? (A) The total internal energy of the hydrogen is the same as that of the helium. (B) The total internal energy of the hydrogen is 167 times that of the helium. (C) The total internal energy of the helium is 1.67 times that of the hydrogen. (D) The total internal energy of the hydrogen is 3.33 times that of the helium. (E) The total internal energy of the helium is 3.33 times that of the hydrogen.

3. A force acting on an object moving along the x axis is given by F_x = (14x − 3.0x²) N, where x is in m. How much work is done by this force as the object moves from x = −1 m to x = +2 m?
(A) +12 J
(B) +28 J
(C) +40 J
(D) +42 J
(E) −28 J

詳解 (共 1 筆)

相關試題

相關試卷