Three Pith Balls Supported by Insulating Threads Hang from a Support

question 2

Multiple Choice

Three pith balls supported by insulating threads hang from a support. We know that ball X is positively charged. When ball X is brought near balls Y and Z without touching them, it attracts Y and repels Z. Since pith is an insulating material, we can conclude that

• A) Y has a negative charge.
• B) Z has a negative charge.
• C) Y has a positive charge.
• D) Z is neutral (has no net charge.)
• E) Y is negatively charged or neutral (has no net charge.)

Understand why a monopoly does not have a supply curve in the traditional sense and the implications for market analysis.

Understand the functions and characteristics of different sensory receptors in the human body.

Identify the pathways and mechanisms involved in sensory perception and motor control.

Describe the role of the central and peripheral nervous systems in processing sensory information.

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Definitions:

Cylinder

A fundamental component of engines where fuel combustion occurs, generating power; it’s typically cylindrical in shape.

Pressure Differential Valve

A valve in a dual-circuit hydraulic brake system that closes off one circuit in response to a leak in order to maintain hydraulic pressure in the other circuit. Preserves brake pressure at two of the four wheels.

Pressure Balance

The equilibrium of forces causing fluid particles to remain stationary, critical in hydraulic and pneumatic systems for stable performance.

Wheel Cylinders

Hydraulic cylinders in a drum brake system, responsible for applying force to the brake shoes when the brake pedal is pressed.