A String Is Stretched with a Tension of 120 N

question 38

Multiple Choice

A string is stretched with a tension of 120 N. The string has a length of 2.5 meters. The velocity of wave propagation along the string is 220 m/s. The mass per unit length of the string is

• A) 5.8 × 10⁻³ kg/m.
• B) 5.0 × 10⁻³ kg/m.
• C) 4.2 × 10⁻³ kg/m.
• D) 3.7 × 10⁻³ kg/m.
• E) 2.5 × 10⁻³ kg/m.

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Definitions:

Heart Rate

The number of heartbeats per unit of time, usually per minute, reflecting the speed at which the heart is beating and pumping blood through the body.

Inspiration

The process of drawing air into the lungs, or a sudden creative idea.

Expiration

The process of exhaling air out of the lungs, a key component of breathing.

ECG

Electrocardiogram, a test that records the electrical activity of the heart to diagnose various heart conditions.