Two Motors in a Factory Are Running at Slightly Different ${ rpm } .$

question 51

Multiple Choice

Two motors in a factory are running at slightly different rates. One runs at 825.0 rpm and the other at 786.0 ${ rpm } .$ You hear the sound intensity increase and then decrease periodically due to wave interference. How long does it take between successive instances of the sound intensity increasing?

• A) 1.54 s
• B) 1.43 s
• C) 1.66 s
• D) 1.79 s

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Definitions:

Differential Count

A test that measures the amount or percentage of different types of white blood cells in the blood, aiding in the diagnosis of various conditions.

Thrombocytes

Another term for platelets; they play a crucial role in blood clotting and wound healing.

Leukocyte

Leukocytes, or white blood cells, are cells of the immune system that protect the body against both infectious disease and foreign invaders.

Formed Element

A term referring to the cells and cell fragments suspended in blood plasma, including erythrocytes, leukocytes, and platelets.