Which of the following is an example of a chemical reaction? A. mixing sugar and water B. melting wax c. tearing up a piece of paper D.burning paper

Answers

Answer 1

Answer:burning paper

Explanation: it’s burned, you can’t put it back together ( you can’t undo a chemical reaction/ change )


Related Questions

Question 6 (4 points)
An automobile is moving with a velocity of 25 m/ and weighs 15680 N. After braking for 6 seconds the velocity of the car is reduced to 14 m/s,
(Hint: Mind the signst)
a. What is the car's mass?
kg
b. What is the car's initial momentum?
kg m/s
What is the change in momentum of the car
kg m/s
d. What is the average braking force on the car?
N
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Time left for this
assement
50:56

Answers

I think this is the answer 34

Yong bought a can of soda at the pool and left the soda in the Sun while he swam. When Yong came back, the soda can was warm. What raised the temperature of his soda? A. the sound of people's voices B. heat energy from the Sun C. water splashed from the pool D. bees flying around the soda can

Answers

Answer:

B. heat energy from the sun


Need help please help.

Answers

Answer:

below

Explanation:

that is the procedure above

a
400 12
M
b
290 12
с
The question below refers to the circuit shown in the image
--
12.0 y
If the voltage across the 400 resistor is 7 V, what is the voltage across the 290 Q resistor?
O 5V
O 7V
O 9V
O 12 V
1
2
3
4
5

Answers

Answer:

i would think c

Explanation:

Determine whether the interference is constructive or destructive at each location indicated.
A.constructive or destructive
B. constructive or destructive
C. constructive or destructive
D. constructive or destructive

Answers

Answer:

A. Constructive

B. Destructive

C. Destructive

D. Constructive

Explanation:

Constructive interference takes place at locations along the path of two superposed waves where the waves are in phase such that a high or low point of one of the waves corresponds with a high or low point of the other wave which gives a resulting wave amplitude which is the sum of the amplitudes of the individual waves

Destructive interference takes place at locations along the path of two superposed waves where one wave is out of phase with the other wave such that a high or low point of one of the waves coincides with a low or high point of the other wave respectively thereby cancelling the effect of the other wave and giving a resulting wave that has an amplitude which is the difference in the amplitudes of the individual waves

Therefore;

At point A, the peak of each wave partially coincides resulting in constructive interference

At point B, the peak of the blue wave and the trough of the red wave partially coincides resulting in destructive interference

At point C, the through of the blue wave and the peak of the back wave partially coincides resulting in destructive interference

At point D, the trough of each wave partially coincides resulting in constructive interference.

GIVING BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 25pts-

Answers

Answer:

c

Explanation:

heat is thermal energy transferred from a hotter system while temperature is a measure of the average kinetic energy of atoms or molecules in the system

Match the phrase with its explanation

Answers

Answer:

its very easy

Explanation:

What is generated around the wire where an electric current travels?

Answers

Answer:

Whenever current travels through a conductor, a magnetic field is generated.

Explanation:

Answer:

Whenever current travels through a conductor, a magnetic field is generated.

Explanation:

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HOPE THIS HELPED!!!

Which of the following is not true about a scientific name?

a. they should be typed in italics
b. they are derived from Greek and Latin words
c. they contain a genus and species name
d. they can vary from location to location

Answers

Then answer would be D

A scientist is designing a device that will mimic Earth's atmosphere by
blocking high-energy waves from the Sun. Pick three high-energy waves
that the device should be able to block?

Answers

Answer:

1. Ultraviolet light (UV)

2. X-rays

3. Gamma-rays

Explanation:

Though there are different types of energy or electromagnetic waves with varying wavelengths, including the likes of Gamma X-rays, ultraviolet light, visible light, infrared radiation, and microwave radiation.

What is more certain is that the atmosphere blocked the high-energy waves from getting to the earth surface or biosphere such as Ultraviolet light (UV), X-rays and Gamma-rays

1200 calories isfind the change in internal energy of the system 1200 calories is removed from a gas held at constant volume give answers in kilojoule ​

Answers

divide those two then 300

If 10.0 J of work are required to transfer 2.00 coulombs of
charge from point X to point Y in an electric field, what is the
difference in potential between these two points?

Answers

Answer: 5V

Explanation: because 2 goes into 10, five times. Also I know it’s correct cuz I got it right in my quiz

The difference in potential between these two points is 5 V.

Electric potential between the two points

The electric potential between two points is the work done in taking a unit postive charge from one point to another.

The difference in potential between these two points is calculated as follows;

W = qV

V = W/q

V = 10/2

V = 5 V

Thus, the difference in potential between these two points is 5 V.

Learn more about electric potential here: https://brainly.com/question/14306881

As a light wave strikes a shiny surface like a piece of polished metal, it will be
refracted
reflected
absorbed
Please help!!!!!

Answers

It will reflect because polished metal is like glass or water it’s shiny and smooth

answer right away!!—A plucked guitar string emits a dominant
frequency of 320 Hz. What is the
frequency of the 3rd harmonic?

Answers

Answer:

20000000000000hz only for this

NO LINKS!!!!!! Help its urgent, PLEASE HELP!!!!!!!!!!!!!!!!

Answers

Answer:

I think ur answer would be B

Explanation:

srry if wrong

hope this helps

Eren Jagear supremacy? kind of.. rip? Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?Eren Jagear supremacy? kind of.. rip?​

Answers

sis i love the eren season 1-2-3-4 but the eren season 5?....... i just :')

Answer:

Explanation:

Aaron yogurt supremacy

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Answers

Answer:

hey dream I m your big fan for u I have answered this question The third one is correct.

Waldo needs to know how much force to apply in order to move a 4000-kg object at 2 m/S2. Which law should he refer to
A.
law of gravity
B.
second law
C.
third law
D.
first law

Answers

bebe xd mexico gana siempre

Greg can't remember how tall his 9-month-old niece is. He guesses that she is 100 cm tall. Which of the following is true?

Age (months)

Height (cm)

3 61.1
6 67.8
9 72.3
12 76.1



A.
Based on the data, Greg's guess is reasonable.

B.
Based on the data, Greg's guess is not reasonable.

C.
Based on the data, Greg's niece should be around 61.1 cm tall.

D.
Based on the data, Greg's niece should be around 76.1 cm tall.

Answers

Answer:

C

Explanation:

A large spool in an electrician's workshop has 65 m of insulation-coated wire coiled around it. When the electrician connects a battery to the ends of the spooled wire, the resulting current is 1.8 A. Some weeks later, after cutting off various lengths of wire for use in repairs, the electrician finds that the spooled wire carries a 2.9-A current when the same battery is connected to it. What is the length of wire remaining on the spool

Answers

Answer:

[tex]40.34\ \text{m}[/tex]

Explanation:

[tex]L_1[/tex] = Length of wire = 65 m

[tex]I_1[/tex] = Initial current = 1.8 A

[tex]I_2[/tex] = Final current = 2.9 A

We know

[tex]R\propto \dfrac{1}{I}[/tex]

and

[tex]R\propto L[/tex]

[tex]\dfrac{V}{I}\propto L\\\Rightarrow L\propto \dfrac{1}{I}[/tex]

so

[tex]\dfrac{L_2}{L_1}=\dfrac{I_1}{I_2}\\\Rightarrow L_2=\dfrac{I_1}{I_2}L_1\\\Rightarrow L_2=\dfrac{1.8}{2.9}\times 65\\\Rightarrow L_2=40.34\ \text{m}[/tex]

The length of the wire remaining on the spool is [tex]40.34\ \text{m}[/tex].

3. What does the difference in force depend on?

Answers

Answer:

it depends on the relative masses of the objects.

Explanation:

It depends on the mass of an object

How did Shi Huangdi link the new lands of his empire

Answers

Answer:

Many things, such as building the Great Wall of China, and building highways.

Explanation:

a simple mobile is made by attaching 4 small balls(0.1 kg each)

Answers

I’m guessing you do 4x0.1 and then get your answer

Adding energy (_____) causes the temperature to _____ OR the phase to change. Removing energy (flows______) causes the temperature to ___ OR the phase to change. When the phase changes, the temperature ______ because the ______ are breaking or forming. When energy is added to a solid, a liquid, or a gas, but the temperature is increasing (no phase change), the molecules are moving ______. A phase change will start to occur when the kinetic energy of the particles is ______ the attractive forces between the particles.
IF U GIVE ME ALL OF THESE MISSING WORDS ILL GIVE U 50 POINTS

Answers

Answer:

ndndnskiaidjdjjdndndkkskdldo

The distance between the two nearest points on a wave where the particles are in phase is 2 m. What is the wavelength of the wave?

A. 1/2 m

B. 1 m

C. 2 m

D. 2 seconds

E. none of these

Answers

Answer:

Suppose that the wave equation is:

f(x) = A*cos(k*x)

The wave is in phase for two points x₁ and x₂ if:

f(x₁) = f(x₂)

And if these points are consecutive (for example, two consecutive peaks) then the wavelength of the wave is:

wavelength = x₂ - x₁

In this case, we know that the wave is in phase for two points that are 2 m apart.

Then we can use the points:

x₁ and x₂ such that:

x₂ = x₁ + 2m

We also know that these are the nearest points such that this happens, then we can assume that the points are consecutive.

Then the wavelength will be:

wavelength = x₂ - x₁ = (x₁ + 2m) - (x₁) = 2m

Then the wavelength is 2m.

The correct option is C.

The distance between two subway stations is 3 miles. If a train travels between the two stations at an average speed of 60 mph, how many minutes does it take for the train to finish the trip between the two stations?

Answers

Answer:3 minutes

Explanation:60 miles an hour, 60 minutes in an hour, 1 mile per minute

Online physics Electrostatic lab

Answers

you can show a photo to know more about the topic

what is the name often given to the force exerted by the first objection a second object​

Answers

Answer:

Newton's Third Law

Explanation:

When one object exerts a force on another object, the second object exerts a force on the first object that is equal in magnitude, but opposite in direction; for every action, there is an equal, but opposite reaction; called the law of action-reaction.

When trying to simplify and find the equivalent resistance you should first simplify resistors in _ before simplifying those in _

Answers

Example problem circuit with a pair of parallel resitiors in series with another resistors. Figure 2 solution. We start by simplifying the parallel l...

The equivalent resistance for the parallel connected resistance will be

[tex]\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}[/tex]

What is resistance?

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω)

Now if two resistances are connected parallel then the voltage on the resistances will be different and the same current will flow from both resistances.

[tex]V_{eq}=V_1+V_2[/tex]

[tex]I_{eq}R_{eq}=I_1R_1+I_2R_2[/tex]

Since [tex]I_{eq}=I_1=I_2[/tex]

[tex]R_{eq}=R_1+R_2[/tex]

Hence the equivalent resistance for the parallel connected resistance will be

[tex]\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}[/tex]

To know more about Resistances follow

https://brainly.com/question/24858512

17. When people replace systems, even when they still work, this is an example of... *
A. Consumerism
B. Automation
C. Manual Labour
D. None of the above

Answers

I'm gonna have to guess B) Automation sorry if I get it incorrect

First off how is it automation, when the person who asked the question just said “when people REPLACE systems.” Automation is like the use of systems and machines. The person answered automation which is the toatal opposite of the answer, which is C, Manual labor. Manual labor is where humans work instead of the machines/systems.

So in simpler words......C.
Have a great day!
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