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ElenaW [278]
2 years ago
12

Every sample of a pure substance has exactly the same composition and the same properties. true or false

Physics
1 answer:
kirill115 [55]2 years ago
7 0
False, that does not apply to some

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If your body is dehydrated, the control center in the brain will stimulate the release of a hormone which causes the reabsorptio
Yanka [14]

Answer:

It is an example of negative feedback mechanism

Explanation:

Negative feedback mechanism is the process by which the output of a system, process or mechanism is fed back into the input in order to reduce the error in the system.

In the system described in this question, the reabsorption of water is the output, a feedback signal is sent to the control center, which is the input in order to control the release of the hormone responsible for reabsorption of water into the blood.

7 0
3 years ago
What does a physicist study?
MissTica

Answer:

A. Matter and energy

Explanation:

5 0
3 years ago
Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do? *
babunello [35]

She does 200J .

We know she uses 20N of force and 10m is the distance. We multiply both numbers and we are given our answer of 200J. Hope this was helpful. :)

4 0
3 years ago
Technician A says that a tire will increase or decrease approximately 1 psi for each 10°F change of temperature. Technician B sa
bearhunter [10]

Answer:

Technician A

Explanation:

It is seen that a tire pressure will increase or decrease 1 psi for each 10^{\circ} F  change in temperature.

For Technician B vehicle pressure should not be adjusted after tire has been warmed as the warm air may increase the pressure but it will be auto adjusted as  the temperature falls to normal .          

8 0
3 years ago
Use what you know about reflection and absorption of light to complete the sentence.
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A red ladybug appears red in white light, red in red light, and black in blue light. Those would be the proper selections you'd need.

3 0
3 years ago
Read 2 more answers
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