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AysviL [449]
4 years ago
15

3. In which activity is no work done?

Physics
1 answer:
Firlakuza [10]4 years ago
6 0

Answer:

Sleeping, since your brain is working, but your physical body is not moving at all or moving rarely, therefore there is no work done in the activity of sleeping.

Explanation:

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The mass of an object is a measure of its
valentina_108 [34]
Hope it helped you.

A. Acceleration is a wrong answer. Acceleration is the rate of change to in velocity. It involves a change in speed and direction. 

B.  Force is a wrong answer. Force is a directions from push/or pull.

C. Inertia is a correct. Inertia is a tendency of an object to stay at the rest or preserve its state of motion.

D. Velocity is a incorrect answer. Velocity is the placement of an object during a specific unit of time. It has two measurements are needed to determine velocity.

-Charlie

-Thank you so much!

Have a great day!
4 0
3 years ago
Astronauts wear liquid cooled space suits to keep their body temperature moderate. One
Anton [14]

Answer:

D. Because they are using space technology on a shirt so people can wear it on earth as well

6 0
2 years ago
When did agriculture first began?​
timofeeve [1]

Answer:

  • Humans invented agriculture between 7,000 and 10,000 years ago, during the Neolithic era, or the New Stone Age. There were eight Neolithic crops: emmer wheat, einkorn wheat, peas, lentils, bitter vetch, hulled barley, chickpeas, and flax.

5 0
3 years ago
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What is the eaquation for acceleration ?
telo118 [61]
Acceleration is the rate of change of velocity of an object. where a is acceleration, v is the final velocity of the object, u is the initial velocity of the object and t is the time that has elapsed. This equation can be rearranged to give: v = u + at.
8 0
3 years ago
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Some headpieces also employ noise reduction technology to eliminate sounds not coming from the earpieces of the stethoscope. How
sweet [91]

Answer:

Noise cancelling headphones have a microphone which listens to the ambient noise. The headphone then processes the sound and provides a wave to produce destructive interference. This cancels the ambient noise.

Explanation:

First, let us understand what interference is. Interference is the phenomenon that occurs when two waves superpose to form a wave which has a different wavelength, frequency, amplitude than the original two waves. When the crest of one wave superposes with the other waves crest then this results in the amplitude increasing. This is known as constructive interference. When the crest of one wave superposes with the other waves trough then this results in the amplitude decreasing. This known as destructive interference.

Noise cancelling headphones have a microphone which listens to the ambient noise. The headphone then processes the sound and provides a wave to produce destructive interference. This cancels the ambient noise.

8 0
4 years ago
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