Two In-Phase Loudspeakers That Emit Sound with the Same Frequency

question 8

Multiple Choice

Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m.A person is standing 12.0 m away from the wall,equidistant from the loudspeakers.When the person moves 1.00 m parallel to the wall,she experiences destructive interference for the first time.What is the frequency of the sound? The speed of sound in air is .

• A)211 Hz
• B)256 Hz
• C)422 Hz
• D)512 Hz
• E)674 Hz

Distinguish between different groups of arthropods based on physical characteristics.

Comprehend the adaptations and systems of various invertebrates for nutrition and locomotion.

Recognize the difference between complete and incomplete metamorphosis in insects.

Identify characteristics of nematodes and their abundance among animal groups.

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Definitions:

Antigens

Substances that the immune system recognizes and reacts against, often leading to the production of antibodies.

T Cells

A type of lymphocyte that plays a central role in cell-mediated immunity, important for the body's defense against pathogens.

Directly Attack

To confront or engage with an opponent or problem in a straightforward and immediate manner, without using intermediaries.

Plasma Cells

White blood cells that produce antibodies, playing a vital role in the immune response by recognizing and neutralizing pathogens.