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A Speedboat Moving at 20

question 86

Multiple Choice

A speedboat moving at 20.6 m/s sounds a signal on its horn,producing a tone of 320 Hz.There is no wind,and the speed of sound in air is 329 m/s.The apparent frequency of the sound heard by an observer in another boat moving in the opposite direction and approaching the first at a speed of 15.4 m/s is

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Negative Emotions

Feelings that are generally considered to be distressing and unpleasant, such as sadness, anger, and fear.

Treat

A reward or gift, often given to positively reinforce behavior or as part of training.

Threat

A stimulus indicating the potential occurrence of harm, leading to responses aimed at avoiding or confronting the danger.

Tart Cherry Juice

A beverage made from the juice of tart cherries, often consumed for its health benefits, including reducing inflammation and improving sleep quality.