All categories

3 years ago

To measure electrical activity in the brain, one should conduct a(n): (2 points)

Physics

2 answers:

Advocard [28]3 years ago

6 0

The answer is EEG . Hope this helps

Lubov Fominskaja [6]3 years ago

3 0

Answer:EEG

Has very high time resolution and captures cognitive processes in the time frame in which cognition

You might be interested in

What is another principle an artist can follow to create the illusion of depth on a flat surface?

Daniel [21]

It can be both flat or it can be when you have new eyeglasses on and you look down it makes you think the ground looks like that but its not

3 0

3 years ago

What does the term conclude mean

matrenka [14]

Answer:

Meaning to bring ssomething to an end

Explanation:

For example if someone is wrapping up an essay a common phrase used is "In conclusion" (conclude beinf that base word) when restating their arguement.

6 0

3 years ago

A blue ball is thrown upward with an initial speed of 24.1 m/s, from a height of 0.5 meters above the ground. 2.9 seconds after

Aleks04 [339]

Answer:

1. Speed=0

2. 2.46 s

3.30.1 m

4. 22.0 m

5.1.004 s

Explanation:

We are given that

Initial speed of blue ball, u=24.1 m/s

Height of blue ball from ground y_0=0.5 m

Initial speed of red ball , u'=7.2 m/s

Height of red from ground=y'0=32 m

Gravity, g= $9.81ms^{-2}$

1.When the ball reaches its maximum height then the speed of the blue ball is zero.

2.v=0

$v=u+at$

Using the formula and substitute the values

$0=24.1-9.81t$

Where g is negative because motion of ball is against gravity

$24.1=9.81t$

$t=\frac{24.1}{9.81}=2.46s$

3. $y=y_0+ut+\frac{1}{2}at^2$

Using the formula

$y=0.5+24.1(2.46)-\frac{1}{2}(9.81)(2.46)^2$

$y=30.1 m$

4.Time of flight for red ball=3.77-2.9=0.87s

$y'=32-7.2(0.87)-\frac{1}{2}(9.81)(0.87)^2$

$y'=22.0m$

Hence, the height of red ball 3.77 s after the blue ball is 22.0 m.

5.According to question

$0.5+24.1(t+2.9)-\frac{1}{2}(9.81)(2.9+t)^2=32-7.2t-\frac{1}{2}(9.81)t^2$

$0.5+24.1t+69.89-4.905(t^2+5.8t+8.41)=32-7.2t-4.905t^2$

$0.5+24.1t+69.89-4.905t^2-28.449t-41.25105=32-7.2t-4.905t^2$

$0.5+69.89-41.25105-32=-24.1t+28.449t-7.2t$

$-2.86105=-2.851t$

$t=\frac{2.86105}{2.851}=1.004 s$

Hence, 1.004 s after the blue ball is thrown are the two balls in the air at the same height.

8 0

3 years ago

A duck is 12 m from the edge of a pond. A student stands in the middle of the pond

olganol [36]

Answer:

The wavelength is 2 meters

Explanation:

The relationship between the frequency, the speed and the wavelength is given by the relation;

v = f × λ

The given parameters are;

The distance of the duck from the edge of the pond = 12 m

The number of ripples produced per second = Frequency, f = 2 Hz

The time it takes the ripple to reach the edge of the pond after travelling past the duck = 3 seconds

Therefore, speed of the wave, v = Distance/time = 12 m/(3 s) = 4 m/s

The wavelength, λ, is therefore;

λ = v/f = (4 m/s)/(2 Hz) = 2 meters.

6 0

3 years ago

Earth, one of eight planets, resides in the spiral galaxy the Milky Way, which is one of the estimated billions of galaxies in s

liberstina [14]

Answer:

One of Eight Planets : Earth

Spiral galaxy, One of the estimated billions of galaxies: Milky Way

Galaxy: Milky Way

Explanation:

According to the definition, appositive or apposition is a grammatical construction which represents similar noun phrases and nouns where one serves or defines the other one.

Here, the ultimate examples of apposition are mentioned in the given statement as Earth: One of Eight Planets, Milky Way: Spiral Galaxy and one of the estimated billions of galaxies: Milky Way.

With such kinds of words, it's easier to understand the noun or renames with a short definition written as a phrase.

6 0

3 years ago