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Murrr4er [49]
3 years ago
14

Which of the following choices is an accurate example of how the use of cultural tools is important in the development of one’s

cognitive developmental process?
A.
For the development of language skills, it is helpful to use symbolism in forming words to match mental pictures.
B.
Categorizing shades of blue from shades of purple helps one to make accurate concept formations.
C.
The use of an abacus to solve a mathematical equation is useful in helping the brain form a mental picture of the problem.
D.
Using cultural tools frequently causes connections in the brain’s nerve endings to strengthen.
Physics
2 answers:
kifflom [539]3 years ago
5 0

the correct answer is c according to ed genuity

mihalych1998 [28]3 years ago
5 0

Answer: Option (C) is the correct answer.

Explanation:

Cognitive development means mental development of a child or person. cognitive development helps in making or working of thought process like problem solving, decision making etc.

For example, when a child uses abacus to solve a mathematical problem then he his thinking mentally in order to frame a picture of the problem so that he can solve it.

Therefore, we can conclude that the use of an abacus to solve a mathematical equation is useful in helping the brain form a mental picture of the problem, is an accurate choice of the given problem.

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7. What is the velocity of an object with a distance of 90m south and a time of<br> 5s?
IrinaK [193]

Answer:

Explanation:

v= s/t

V =90m/5s

V = 8m/s

4 0
2 years ago
you check the weather and find that the winds are coming from the west at 15 milers per hour. this information describes the win
nydimaria [60]

Answer:

Velocity

Explanation:

We finds that the winds are coming from the west at 15 miles per hour. This information shows the velocity of the wind. Since, velocity is a vector quantity. It has both magnitude and direction. 15 miles per hour shows the speed of wind and west shows the direction of wind motion.

Hence, the given information describes wind velocity.

6 0
3 years ago
How much time will it take to perform 440 joule of work at a rare of 11 w?​
kifflom [539]

Answer:

40sec

Explanation:

Data

Work = 440 J

Power= 11watt

time = ?

Power = work done/time

===> time = work done/power

= 440/11

= 40sec

7 0
2 years ago
A gold wire that is 1.8 mm in diameter and 15 cm long carries a current of 260 mA. How many electrons per second pass a given cr
Musya8 [376]

Answer:

162500000.  

Explanation:

Given that

Diameter of the wire , d= 1.8 mm

The length of the wire ,L = 15 cm

Current ,I = 260 m A

The charge on the electron ,e= 1.6 x 10⁻¹⁹ C

We know that Current I is given as

I=\dfrac{q}{t}

I=Current

q=Charge

t=time

q= I t

q= 260 m t

The total number of electron = n

q= n e

n=\dfrac{260\times 10^{-3}\ t}{1.6\times 10^{-9}}

n=162500000 t

\dfrac{n}{t}=16250000

The number of electron passe per second will be 162500000.

4 0
3 years ago
The siren on an ambulance emits a sound of frequency 2.80×103Hz. If the ambulance is traveling at 26.0 m/s (93.6 km/h or 58.2 mi
Norma-Jean [14]

To solve this problem it is necessary to apply the concepts related to the described wavelength through frequency and speed. Mathematically it can be expressed as:

\lambda = \frac{v}{f}

Where,

\lambda = Wavelength

f = Frequency

v = Velocity

Our values are given as,

f = 2.8*10^3Hz

v = 340m/s \rightarrow Speed of sound

Keep in mind that we do not use the travel speed of the ambulance because we are in front of it. In case it approached or moved away we should use the concepts related to the Doppler effect:

Replacing we have,

\lambda = \frac{340}{2.8*10^3}

\lambda = 0.1214m

Therefore the frequency that you hear if you are standing in from of the ambulance is 0.1214m

5 0
3 years ago
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