A Phonograph Turntable, Initially Rotating at 0 $\pi$ C) $\pi$ /40
D) $\pi$

question 23

Multiple Choice

A phonograph turntable, initially rotating at 0.75 rev/s, slows down and stops in 30 s. The magnitude of its average angular acceleration in rad/s² for this process is:

• A) 1.5
• B) 1.5 \(\pi\)
• C) \(\pi\) /40
• D) \(\pi\) /20
• E) 0.75

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Definitions:

Government Intervention

Actions taken by a government to affect the economy, which can include regulations, subsidies, tariffs, and more.

Equilibrium Price

The price at which the quantity of a good or service demanded equals the quantity supplied, resulting in no shortage or surplus.

Equilibrium Quantity

The quantity of goods or services sold and bought at the equilibrium price, where market supply equals market demand.

Demand Rises

A situation where the quantity of a good or service that consumers are willing and able to buy increases.