The Velocity of a Particle Moving Along the X Axis

question 45

Multiple Choice

The velocity of a particle moving along the x axis changes from v_i to v_f.For which values of v_i and v_f is the total work done on the particle positive?

• A)v_i = 5m/s, v_f = 2m/s
• B)v_i = 5m/s, v_f = -2m/s
• C)v_i = -5m/s, v_f = -2m/s
• D)v_i = -5m/s, v_f = 2m/s
• E)v_i = -2m/s, v_f = -5m/s

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Definitions:

Ionizing Radiation

High-energy radiation that can remove tightly bound electrons from the orbit of an atom, causing the atom to become charged or ionized.

Visible Light

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, encompassing wavelengths approximately from 380 to 750 nanometers.

Stationary Phase

The phase in chromatography that does not move, which can be a solid or a viscous liquid through which the sample moves.

HPLC Column

A cylinder filled with stationary phase used in high-performance liquid chromatography for separating chemical compounds in a mixture.