A String Is Held Taut Between Two Supports 2

question 45

Multiple Choice

A string is held taut between two supports 2.0 m apart. The longest and next-longest possible wavelengths for standing waves are

• A) 4 m and 2 m.
• B) 6 m and 3 m.
• C) 8 m and 4 m.
• D) 16 m and 5.3 m.

Determine the effect of income changes on the demand for goods (normal and inferior goods).

Understand the concept and calculation of cross elasticity of demand.

Apply the midpoint formula to calculate elasticity.

Interpret the significance of elasticity values in economic decision-making.

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Definitions:

Unbalanced Braking

A condition in a vehicle's brake system where the brakes do not apply evenly across all wheels, leading to decreased control and safety.

Trailer Service Braking

The braking system specifically designed for the controlled slowing or stopping of a trailer.

Dash Valve

A control valve, typically found in air brake systems of trucks, used to apply and release brakes.

Actuate

To cause a mechanical system or device to operate.