Joelle is a manager at a construction company, and she is interested in the chemistry behind
the materials they use. She has begun studying the materials used to fill walls. She knows
that to keep the temperature inside a room steady the material must be a thermal insulator,
and she predicts that materials should not be acidic or else they would dissolve too easily in
water

Answers

Answer 1

Answer: C6H6

Explanation:

I did it and got it right

Answer 2

Answer:

Yes the answer is C6H6

Explanation:

I just took the test


Related Questions

A jet plane acceleration along a straight run way from rest to a speed of 140 m/s in 50 seconds when it took off. Calculate:
1- it’s change of velocity
2- it’s acceleration

Please help me it’s emergency

Answers

Answer:

Vf=140 m/s

Vi=0

t=50s

Explanation:

1. Acceleration is called change of velocity.

2. a=Vf-Vi/t

a=140-0/50

a=140/50

a=2.8m/s^2

A toy car has an initial velocity of 5 m/s and experiences a constant acceleration of 2.0 m/s2. How far does the toy car travel before reaching a velocity of 11 m/s? Write your answer to one decimal place.

Answers

Answer:t would be 17 m/s

If we use V2 = V1 + a*t

Sub in 5 for v1

2m/s*2 for a

And

6 for t

That should give you the answer.

2. A race car travels a complete lap on a circular track of radius 500 m in 50 s. What is the
average velocity of the race car? (1 pt)
a. Zero
b. 100 m/s
C. 200 m/s
d. None of the above
3. In problem two. What would be the average speed? (2 pts)
1

Answers

Answer:

100m/s

Explanation:

velocity = displacement/time

The average velocity of the race car around the circular track in the given time is 62.8m/s.

Hence, option D) None of the above is the correct.

What is Average Velocity?

Average velocity is simply the displacement of a particle or object over time. It is the rate of change of position of an object with respect to time.

It is expressed as;

Velocity = displacement / time

It can also be expressed as;

Velocity = circumference / time = 2πr / t

Given the data in the question;

Radius of the track r = 500mTime elapsed t = 50sAverage velocity V = ?

To determine the average velocity, we substitute our values into the expression above.

V = 2πr / t

V = ( 2 × 3.14 × 500m ) / 50s

V = 3140m / 50s

V = 62.8m/s

The average velocity of the race car around the circular track in the given time is 62.8m/s.

Hence, option D) None of the above is the correct.

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What is the velocity of the object moving from 3 - 7 seconds?
O m/s
-6 m/s
6 m/s

Answers

That's the flat-top marked ' B '.

It's 6 m/s.

Which explains how to calculate the average acceleration of a moving object?
1.Divide the change in velocity by the change in time.
2.Multiply the change in time by the change in velocity.
3.Divide the change in time by the change in velocity.
4.Subtract the velocity from the change in time.

Answers

Answer Multiply the acceleration by time to obtain the velocity change: velocity change = 6.95 * 4 = 27.8 m/s . Since the initial velocity was zero, the final velocity is equal to the change of speed.

​  

v, start subscript, a, v, g, end subscript, equals, start fraction, delta, x, divided by, t, end fraction, equals, start fraction, minus, 4, start text, space, m, end text, divided by, 5, start text, space, s, end text, end fraction, equals, minus, 0, point, 8, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction

The minus sign indicates the average velocity is also toward the rear of the plane.

The average velocity of an object does not tell us anything about what happens to it between the starting point and ending point, however. For example, we cannot tell from average velocity whether the airplane passenger stops momentarily or backs up before he goes to the back of the plane. To get more details, we must consider smaller segments of the trip over smaller time intervals. For instance, in the figure below, we see that the total trip displacement,

 

Answer:

bdjdiosfjigjdigjtrht <3

Explanation:

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 29.7 N and the spring scale reads 17.6 N.

Answers

Hello. This question is incomplete. The full question is:

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 29.7 N and the spring scale reads 17.6 N.

What is the magnitude of the force that Earth exerts on the bag?

Answer:

47.3 N

Explanation:

the entire system shown in the question above is at rest. Which greatly facilitates the calculation that we must do. In this case, to measure the magnitude that the force of the earth has on the backpack, you only need to add the two forces that you already know in the system.

In that case, it would be, you should calculate:

F= 29.7 N+ 17.6 N

F= 47.3N


What is meant by the term work done?

Answers

If you are speaking science terms work done means or can mean. If a force is being exerted at an angle 0 to the displacement, the work done is w= Fd cos 0

A cyclist must travel 800 kilometers. How many days will the trip take if the cyclist travels at an average speed of 16 km/h

Answers

Answer:

2 days 2 hours or 50 hours

Explanation:

800/16=50

Need help! Photo says all! Will mark brainliest :)

Answers

Answer:

number 2!

Explanation:

Answer:

2s to 4s

Explanation:

Since the graph measures acceleration over time, when the line does not move up or down is when you can see a constant velocity.

When your body takes the chemical energy in food and transforms it so you can move, what type of energy did it transform it into?

Radiant energy


Chemical energy


Thermal energy


Mechanical energy

Answers

Answer:

chemical I think

Explanation:

hope this helps

Answer:

its actually mechanical energy

Explanation:

i took my quiz

What do all of the elements in group 13 have in common?

Answers

each one of the elements in group 13 has three electrons in the outer shell of their nuclear structure
They have three electrons in the outer shell

An object is moving along a straight line. The graph shows the velocity of the object over
time.
What is the instantaneous acceleration of the object at time = 9.5 seconds?
A.-20 m/s2
B.0 m/s2
C.20 m/s2
D.-10 m/s2

Answers

Answer:

From 9 to 10 sec the velocity is decreasing at a constant rate.

Change in V = 20 m/s - 30 m/s = -10 m/s

Since acceleration is constant from point E to point F (straight line)

and t = 9.5 sec is on this line

a = (20 m/s - 30 m/s) / 1 sec = -10 m/s^2  

The instantaneous acceleration of the object at time = 9.5 seconds is - 10 m/s².

What is acceleration?

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.

From t = 9 second to t =10 second the velocity of the object decreases at a constant rate.

Change in velocity of the object = final velocity - initial velocity

= 20 m/s - 30 m/s

= -10 m/s

time interval is = 10 sec - 9 sec = 1 sec.

Hence, acceleration of the object is: a = Change in velocity/ time interval

= - 10 m/s/1s

= -10 m/s²

Therefore,  the instantaneous acceleration of the object at time = 9.5 seconds is - 10 m/s².

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The second image !!!!!!

Answers

Answer:

Explanation:

No, not any of these substance will float in Methanol , simply because Methanol has a density of 0.79 g, if you put any substance that weighs more than 0.79 g, it will sink, it all depends on the weight if it is more or less than methanol  

2: D=m/v

D=135/50 = 2.7 g/cm³ ( Aluminum)

D=M/V

if two objects has the same mass but one has larger volume, then te one with larger volume has less density

example : 2 objects

mass of both=350

volume of the first one=500 and  the other 750

D1=M1/V1 = 350/500 =0.7

D2 = M2/V2 = 350/750 = 0.4666

D1 is larger than D2( with larger volume )

what are muons in cosmology ​

Answers

Answer:

Explanation:

Muons in the atmosphere, a component of cosmic rays. Atmospheric muons are an essential component of cosmic ray showers. When a high energy primary particle coming from space collides with a nucleus of the upper atmosphere, it generates a spray of particles which later interact in their turn.

Subduction occurs when:

-a plate with continental crust sinks beneath a plate with
oceanic crust

-a plate with oceanic crust sinks beneath a plate with
continental crust

-two plates move apart from one another

two plates slide past one another​

Answers

Explanation:

a plate with oceanic crust sinks beneath a plate with

continental crust is the answer

If a swimmer is traveling at a constant speed of 2 m/s, how long would it
take to swim the length of a 50-meter Olympic sized pool ?*

Answers

Yeah so 50-meter Olympic sized pool would be 25 mm

A snail can move app approximately 0.30 inches per minute. How many meters can the snail cover in 15 minutes

Answers

4.5 i’m pretty sure sorry if i’m wrong

Answer:

4.5 because just do the math and its 4.5

Study habits include
a.
How you prepare for assignments
c.
What questions you ask your teacher
b.
How you take tests
d.
All of these


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

D

Explanation:

Study habits include, how you prepare for assignments, what questions you ask your teacher, and How you take tests, all of these come under study habits, therefore the correct answer is option D.

What is science?

The deliberate evidenced based quest and application of information and comprehension of the natural implications for society is what is known as research.

Science is a methodology of discovering more about the world.

People may contribute to the development of new knowledge through science and utilize it to promote their objectives.

A student's study habits include factors like how they approach tasks, questions they ask their professors, and how they prepare for the exam

Thus, the correct answer is option D.

To learn more about the science here, refer to the link;

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Which best describes internet wikis as a source of scientific information

Answers

Answer:

They are written or edited by anyone

Explanation:

A 95kg clock initially at rest on a horizontal floor requires a 560N horizontal force to set it in motion. After the clock is in motion, in horizontal force of 650N

Answers

Complete Question

A 95 kg clock initially at rest on a horizontal floor requires a 650 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 560 N keeps it moving with a constant velocity. Find the coefficient of static friction and the coefficient of kinetic friction.

Answer:

The value for static friction is [tex]\mu_s = 0.60[/tex]

The value for static friction is [tex]\mu_k = 0.70[/tex]

Explanation:

From the question we are told that

The mass of the clock is [tex]m = 95 \ kg[/tex]

The first horizontal force is [tex]F _s = 560 \ N[/tex]

    The second horizontal force is    [tex]F _k  =  650  \  N[/tex]

Generally the static frictional force is equal to the first  horizontal force

So

     [tex]F _s  =  m  *  g  *  \mu_s[/tex]

=>   [tex]560  =  95  *  9.8  *  \mu_s[/tex]

=>    [tex]\mu_s =  0.60[/tex]

Generally the kinetic frictional force is equal to the second horizontal force

So

      [tex]F _k  =  m  *  g  *  \mu_k[/tex]

      [tex]650 =  95  *  9.8  *  \mu_k[/tex]

     [tex]\mu_k =  0.70[/tex]

us
Is this an example of a theory or law? Planets orbit the sun
elliptically.
Theory
Law

Answers

The answer to your question is law.

What is a hypothesis?
A.
a statement that can be tested through a scientific investigation
B.
a description of the steps involved in an experiment
C.
a statement that summarizes the results of an experiment
D.
a question that cannot be scientifically tested

Answers

Answer:

A

Explanation:

a statement that can be tested through the scientific method

Ten Seconds after starting from rest, a car moving at 40 m/s what is the cars average acceleration

Answers

Answer:

[tex]4ms {}^{ - 2} [/tex]

Explanation:

We can use equation of motion to solve this

[tex]v = u + at \\ 40 = 0 + a(10) \\ a = 4m {s}^{ - 2} [/tex]

Does the earth emit visible light or heat

Answers

Answer:

Heat

Explanation:

the earth visible heat

Matter is all around us and is made of atoms. How are atoms of different elements different from each other? How do these differences relate to their properties?

Answers

Answer:

it all depends on the protons and the neutrons of that element.

GO
10 20
What is one standard kilogram define in Si system

Answers

Answer:

The mass of cylinder made up of alloy of platinum iridium that is kept at international bureau of weights and measures is called one standard kilogram.

The system of seven fundamental quantities is called SI system .

What is the smallest part of a chemical compound that has all the properties
of that compound
A. A nucleus
B. A mineral
C. An atom
D. A molecule

Answers

Answer:

D. A Molecule

Explanation:

The smallest particle of a compound that still has the properties of the compound is a molecule. It is composed of two or more bonded atoms.

The smallest part of a chemical compound that has all the properties of that compound is a molecule (option d)

In the world of chemistry, substances are composed of tiny units called atoms, and these atoms bond together to form chemical compounds.

Option A, a nucleus, refers to the central core of an atom and consists of protons and neutrons. While essential for an atom, a nucleus alone does not represent a complete chemical compound.

Option B, a mineral, is a naturally occurring inorganic substance with a specific chemical composition and a definite atomic structure. However, minerals are not the smallest parts of a chemical compound.

Option C, an atom, is the fundamental building block of matter. It consists of a nucleus (containing protons and neutrons) surrounded by electrons. While atoms are crucial for forming compounds, they are not the smallest unit that retains all the properties of a compound.

Therefore, the correct answer is Option D, a molecule. A molecule is a group of two or more atoms bonded together, representing the smallest part of a chemical compound that possesses all the characteristics and properties of that compound.

Hence the correct option is (d).

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A force of 200N is creating a pressure of 50Pa on a surface. Calculate the area of the surface.

Answers

Answer:

4kg

Explanation:

pressure=50pa

force=200N

Area=?

now,

pressure=force/area

50=200/area

area=200/50

area=4kg

The pressure is the forces acting on a given area. Hence, the area of the surface with a pressure of 50 Pa by a force of 200 N is 4 m².

What is force?

Force is an external agent acting on a object to deform it or to change its state form motion or rest. Force is a vector quantity and it is characterised by its magnitude and direction. The unit of force is Newton (N).

Pressure is the force applied on unit area. Thus, as the force increases, pressure increases. Pressure can have the units in atm, pa, N/m² etc.

Pressure = Force / area.

Given that force = 200 N

pressure = 50 Pa = 50 N/m²

Therefore, area =  force/pressure

                          = 200 N / 50 Pa

                          = 4 m²

Therefore, the area of the surface is 4 m².

To find more on pressure, refer here:

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A 3.00 kg mass is traveling at an initial speed of 25.0 m/s. What is the
magnitude of the force required to bring the mass to rest in a distance of 62.5m?

Answers

Answer:

The magnitude of the force required to bring the mass to rest is 15 N.

Explanation:

Given;

mass, m = 3 .00 kg

initial speed of the mass, u = 25 m/s

distance traveled by the mass, d = 62.5 m

The acceleration of the mass is given as;

v² = u² + 2ad

at the maximum distance of 62.5 m, the final velocity of the mass = 0

0 = u² + 2ad

-2ad = u²

-a = u²/2d

-a = (25)² / (2 x 62.5)

-a = 5

a = -5 m/s²

the magnitude of the acceleration = 5 m/s²

Apply Newton's second law of motion;

F = ma

F = 3 x 5

F = 15 N

Therefore, the magnitude of the force required to bring the mass to rest is 15 N.

A Tale f Two Elephants

1. what organisms are shown?

2. Do they look the same?

3. Do the pictures show the same species?

4. How are they similar?

5. How are they different?​

Answers

Answer:

u need it now?

Explanation:

I'll answer it

Based on the diagram above, the organisms that are shown are elephants.

What is a species?

A species simply refers to a biological classification of related organisms that have the same (similar) characteristics and they are capable of mating (breeding) with one another in a cycle (different seasons).

Based on the diagram above, we can logically deduce that the organisms shown are species of elephants and they look similar due to the following points:

They both have a single tail.They both have ears.They both have four legs.They both have tusk.

However, an obvious difference between them is the number of tusk.

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