A CD with a Diameter of 12

question 48

Multiple Choice

A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.00 rad/sec² acquires an angular velocity of 5.00 rad/sec.The CD continues rotating at 5.00 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration.What is the total acceleration of a point 4.00 cm from the center at the time 2.00 seconds from the start?

• A) 0.450 m/s²
• B) 0.314 m/s²
• C) 0.215 m/s²
• D) 0.165 m/s²
• E) 0.100 m/s²

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Definitions:

Interaction Effect

A statistical phenomenon where the effect of one independent variable on a dependent variable varies depending on the level of another independent variable.

Random Sample

A subset of a population selected through a method where every individual has an equal chance of being chosen, ensuring the representativeness of the sample.

Target Population

The entire group of individuals or instances about whom the research is focused and to whom the researcher wishes to generalize the study findings.

Systematic Bias

A consistent and predictable error introduced into sampling or testing by selecting or encouraging one outcome or answer over others.