A String, Clamped at Its Ends, Vibrates in Three Segments

question 30

Multiple Choice

A string, clamped at its ends, vibrates in three segments. The string is 100 cm long. The wavelength is:

• A) 33.3 cm
• B) 66.7 cm
• C) 150 cm
• D) 300 cm
• E) need to know the frequency

---

Definitions:

Electroconvulsive Therapy

A medical treatment most commonly used for severe major depression which involves electrically induced seizures for therapeutic effect.

Transcranial Magnetic Stimulation

A non-invasive procedure that uses magnetic fields to stimulate nerve cells in the brain to treat depression and other conditions.

Major Depression

A disorder involving disturbances in emotion (excessive sadness), behavior (loss of interest in one’s usual activities), cognition (thoughts of hopelessness), and body function (fatigue and loss of appetite).

FDA

The Food and Drug Administration, a federal agency responsible for protecting public health by ensuring the safety of food, drugs, and medical devices.