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Mashutka [201]
4 years ago
10

Which stage of sleep usually comes before REM sleep

Physics
2 answers:
kumpel [21]4 years ago
7 0
Stage 4





Hope this helps
ZanzabumX [31]4 years ago
6 0
After stage 3 sleep, stage 2 sleep is repeated before entering REM sleep.

On average, we enter the REM stage approximately 90 minutes after falling asleep. The first cycle of REM sleep might last only a short amount of time, but each cycle becomes longer. REM sleep can last up to an hour as sleep progresses.

Most likely it would be C, Hope this helps!
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Two straight wires separated by a very small distance run parallel to each other, one carrying a current of 3.0 A to the right a
Lyrx [107]

Answer:

Explanation:

I1 = 3 A right

I2 = 6.8 A left

Let the distance is r from both the wires on the same side.

The formula for the magnetic field is given by

B =\frac{\mu _{0}}{4\pi }\frac{2i}{r}

As the direction of current in both the wires is opposite to each other

so the net magnetic field is

B = B2 - B1

B =\frac{\mu _{0}}{4\pi }\frac{2i_{2}}{r}-\frac{\mu _{0}}{4\pi }\frac{2i_{1}}{r}

B =\frac{\mu _{0}}{4\pi }\frac{2\times 6.8}{r}-\frac{\mu _{0}}{4\pi }\frac{2\times 3}{r}

B =\frac{\mu _{0}}{4\pi }\frac{7.6}{r}

8 0
3 years ago
The diagram below shows a subduction zone where oceanic crust is sinking into the mantle underneath continental crust as two
Scrat [10]

Metal ores

Explanation:

in an area where subduction has occurred in times past, metal ores are likely to be found.

Metallic ores find subduction zone regions very favorable to crystallize out of a magma.

  • Ores have different modes of formation.
  • Typically, they are found in hydrothermal vents and black smokers of igneous intrusives.
  • These are igneous terrains where metallic sulfides and other minerals crystallize out of magmatic body.
  • Metals in magma usually have large sizes and do not partition easily in the melt.

At a subduction zone, partial melting of the subducting plate forces magma into nearby country rock as an intrusive and to the ocean floor where they form black smokers.

Learn more:

Rocks brainly.com/question/2740663

#learnwithBrainly

4 0
3 years ago
you realize that your friend is clearly distracted and not paying attention to everything that is happening on the road. describ
alekssr [168]
A. ask him/her to pull over and offer to drive (if you have your license.)
B. ask him/her to call someone to come pick you guys up.
C. call a cab.
8 0
3 years ago
Rocket can propel itself in a vacuum. True or false
makkiz [27]

Answer:

Yes.

Explanation:

Rocket can propel itself in vacuum because the thrust is provided as a reaction to the the gases coming out of rocket, which have nothing to do with vacuum.

3 0
3 years ago
What waves have high amplitudes
Olegator [25]

-- loud sounds

-- bright lights

-- strong radio signals

-- Slinkies that can pinch you painfully

-- a tsunami in the ocean

-- earthquakes above Richter 5 or 6

5 0
4 years ago
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