A 20-Kg Block Slides Down a Plane (Inclined at 40 $\degree$

question 28

Multiple Choice

A 2.0-kg block slides down a plane (inclined at 40 $\degree$ with the horizontal) at a constant speed of 5.0 m/s.At what rate is the gravitational force on the block doing work?

• A)+98 W
• B)+63 W
• C)zero
• D)+75 W
• E)-75 W

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Definitions:

(R)-2-Ethoxybutane

A specific enantiomer of 2-ethoxybutane, which is an organic compound used in some chemical syntheses, defined by its specific three-dimensional arrangement.

Sodium Butoxide

An organic compound used as a strong base in various chemical syntheses, derived from butanol.

Iodoethane

An organoiodine compound with the formula C2H5I, used as an alkylating agent in organic synthesis.

Ethoxide

Ethoxide refers to the anion or salt derived from ethanol, typically found in reactions as a strong base or nucleophile.