1. How is echolocation used by animals and in sonar?

1 answer:

4 0

Sound waves are sent out buy the animal/or vessel using sonar and the animal/vessel uses the echo from the original Soundwave that was sent out to determine the distance and size of the object that it hit

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A clinic gives a drug to a group of ten patients and a placebo to another group of ten patients to find out if the drug has an e

navik [9.2K]

The correct answer for this question is Designed experiment.

A person experiences the placebo effect when their physical or mental health seems to get better after receiving a placebo or "dummy" treatment. A treatment that seems to be real but is intended to have no therapeutic benefit is referred to as a placebo. The Latin word for placebo means "I will please."

One of the most popular hypotheses holds that a person's expectations are what causes the placebo effect. It's possible that the body's chemistry can produce results comparable to what a drug might have produced if a person anticipates a pill to do something.

To know more about Placebo effect, click here:

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3. Two costs of violence are costs to the victim and costs to the assailant. What is a third cost of violence?

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Oh okay !! anyways i just happy

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Still need friends lm.ao :(

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