A Block of Wood Is Given a Brief Push and Then

question 70

Multiple Choice

A block of wood is given a brief push and then allowed to slide [without further pushing] along a table top, slowing down as it moves toward the east. As the block slides,

• A) its acceleration is toward the east.
• B) its acceleration is toward the west.
• C) the net force on it is zero.
• D) it has no acceleration.
• E) its velocity is toward the west.

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Definitions:

Distinct Quartets

In NMR spectroscopy, a pattern indicating a group of hydrogen atoms coupled to three other hydrogens, resulting in four equally spaced peaks.

Off-Resonance Decoupled

In NMR spectroscopy, a technique used to simplify complex spectra by decoupling specific nuclei from the observed spin-spin interactions.

Proton Spin Decoupled

A technique in nuclear magnetic resonance (NMR) spectroscopy that removes the interaction between proton spins to simplify the spectrum and aid in structural analysis.

Proton Spin Decoupled

A method used in nuclear magnetic resonance (NMR) spectroscopy where the interactions between proton spins are removed to simplify the spectrum.