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Mademuasel [1]
3 years ago
11

What is a scientific model?Question 2 options:A group of objects that interact with each other.A complex system made of many sma

ller systems.A way of representing a system to better understand it's behavior.Someone who walks down a runway wearing a lab coat.
Physics
1 answer:
HACTEHA [7]3 years ago
5 0

Answer:

A scientific model is a way of representing a system to better understand it's behavior

Explanation:

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This solid layer of the earth is made of mostly iron and nickel.
Studentka2010 [4]

Answer

Explanation:

Yes, it's true that the solid layer of the earth is known as the most dense part as it is made up of the heavy metals like iron and nickel. Inner part is the hotter part due to the high pressure and temperature. It has the temperature of about 5,200°C and the pressure of 3.6 million atm but still the iron and nickel are present there in the solid form as they withstand such high temperature and pressure values.

5 0
3 years ago
What are laws of newton
Black_prince [1.1K]

Answer:

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction

Explanation:

6 0
3 years ago
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Why are earbud wires for an mp3 player coated with plastic
saw5 [17]

2) they add the insulation to better the durability or the earbuds

6 0
3 years ago
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A toy gun uses a spring to project a 4.5-g soft rubber sphere horizontally. The spring constant is 8.0 N/m, the barrel of the gu
marishachu [46]

Answer:

1.93 m/s

Explanation:

Parameters given:

Mass = 4.5g = 0.0045kg

Spring constant = 8.0 N/m

Length of barrel = 13 cm = 0.013m

Frictional force = 0.035N

Compression = 5.8 cm = 0.058m

First, we find the P. E. stored in the spring:

P. E. = ½*k*x²

P. E. = ½ * 8 * 0.058² = 0.013J

Then, we find the work done by the frictional force while the sphere is leaving the barrel of the gun:

Work = Force * distance

The distance here is the length of the barrel.

Work = 0.035 * 0.13 = 0.0046 J

The kinetic energy of the sphere can now be found:

K. E. = P. E. - Work done

K. E. = 0.013 - 0.0046 = 0.0084J

We can now find the speed using the formula for K. E.:

K. E. = ½*m*v²

0.0084 = ½ * 0.0045 * v²

v² = 0.0084/0.00255 = 3.733

=> v = 1.93 m/s

4 0
3 years ago
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Scientific models can be used for a variety of different purposes. Which of the following is not a possible use for a scientific
alex41 [277]
Options a to c can be the reasons for scientific models.

But to primarily answer scientific questions,that would require an empirical and experimental approach and not use of models.

Though after getting the answers, models can be built to further explain the answers.

<span>d. answer scientific questions.</span>
4 0
3 years ago
Read 2 more answers
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