Chemistry Middle School

Why is it important to have a control?


IN SOUND ENERGY!!!!!!!

Answers

Answer 1

Answer:

why it is important to have control in sound of energy is because noise is airborne sound energy within a broad range of frequencies that has the potential to cause either discomfort or injury to people working in the area. specifically, noise needs to be controlled In order to *protect the hearing of the personnel who work at the facility *

Related Questions

What two objects transmit light?

Answers

Answer:

Water, and metal.

Explanation:

Air, glass and water are common materials that are very good at transmitting light. They are transparent because light is transmitted with very little absorption. Translucent materials transmit some light but are not completely clear.

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Answers

THE ANSWER IS AGREEEEE!
......

Answer:

agree

Explanation:

you cannot undo the reaction when you bake the cake

Explain how getting sick can affect the body’s ability to maintain homeostasis.

Answers

Answer:

If your body manages to maintain homeostasis, then it means everything is in order, and you are in a healthy state. However, getting sick would indicate that your body conditions are not stable. This happens when the homeostasis is disrupted due to the interference of pathogens such as viruses and bacteria; for example, catching a flu virus would cause you to have a fever, cold, sore throat, and muscle aches. These symptoms eventually weaken your body and prevent you from performing your daily life functions.

The homeostasis has been affected while getting sick due to a change in temperature with disturbed electrolyte balance.

Homeostasis has been the ability of the body to maintain the equilibrium balance of the electrolytes, and elements for the proper functioning of the system.

The homeostasis has been maintained with the temperature and balance of the components in the preset limit. However with the change in the homeostasis results in the change in the balance and functioning of the organs.

While getting sick, we have changes in the body temperature along with electrolyte dis-balance. This results in disturbed homeostasis.

For more information about homeostasis, refer to the link:

https://brainly.com/question/9087319

35 POINTS AND BRAINLIEST!
Which description is not a property of an acid?
A. pH lower than 7
B. Turns litmus paper blue
C. Sour taste
D. Corrosive

Answers

Answer:

B turns litmus paper blue

Explanation:

B is the answer, hopefully that helps you!

Which statement is true about heat and light energy?

A Heat and light energy always move from colder objects to warmer ones.
B Heat energy moves in many different directions and light energy moves in only one direction.
C Objects do not produce both heat energy and light energy.
D Some objects can absorb both heat energy and light energy.

Answers

Answer:C

Explanation:

Answer:

D.

Explanation:

Got it right on my test, Trust me.

Choose all the answers that apply.

Which of the following are physical properties?

flammability
hardness
magnetism
boiling point
density

Answers

Physical properties are boiling point, density, hardness,and magnetism.
Physical properties on your list would include hardness, magnetism, boiling point, and density.

How do you enter the density into the calculator?

A. volume (cm3) / mass (g) =
B.mass (cm3) / volume (g) =
C.mass (g) / volume (cm3) =
D.mass (g) X volume (cm3) =

Answers

Mass (cm3)/Volume (g)

What is the curie used to measure?

a.amount of radiation equaling disintegrations per second

b.amount of radiation biological material absorbs

c.amount of gamma radiation needed to produce a specific number of positive or negative particles

d.amount of radiation needed to produce positive or negative particles due to gamma rays passing through one gram of air

Answers

Answer:

Explanation:

A

The answer to this is A

How does the amount of water in a glass affect the pitch of the sound it produces?

Answers

Answer:

the more water the higher the pitch the less water the lower it is

Answer:

The glass with the most water has the lowest pitch. The glass with the least amount of water has the highest pitch.

Explanation:Tapping the glasses causes the air to vibrate. When the air column is shorter, the air vibrates faster and the pitch is higher.

Help I need to know and please answer three of the following questions

Answers

Answer:

we'll, metal cups are usually used for coffee so people who bring their coffee to work from home can keep it warm. metal cups however do not keep things cold, it may feel cold on the outside, but that's an illusion. plastic doesn't do much, its just a cold insulator. it is good at keeping things cold because it is a poor heat conductor. foil can keep things warm, but it can also keep things cold. do what you will with the info lol.

Answer:

1.H & E

Explanation:

metal cups keep things hot and cup H is made to keep things both cold and hot but the other cups will melt if you put hot stuff in them and number three is an answer it your self because it says to enter your answer so........

²³√∛·×÷±≈≠≤≥≡≅⇒,⇔∈∉∧∨∞αβΔπФω↑↓∵∴↔→←⇵⇅⇄⇆∫∑⊂⊃⊆⊇⊄⊅∀°∠∡⊥∪∩∅¬⊕║∦∝∞㏒㏑

Use the images below to complete the information on the table and answer questions 1-5.

Answers

Answer:

Proton: Positive

Electron: Negative

Neutron: No charge

Proton positive
Electron negative
Neutron neutral

What happens to the wave on the string when you decrease the amplitude?

Answers

Answer:

The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. ... The amplitude of a wave is related to the amount of energy it carries. A high amplitude wave carries a large amount of energy; a low amplitude wave carries a small amount of energy.

Explanation:

have an amazing day luv

Answer:

The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases

Explanation:

Which of Newton's 3 Laws explains a rocket lifting off? *

Law of inertia
Law of Acceleration
Law of Action-Reaction

Answers

Answer:

Newton's Third Law of Motion

Explanation:

A rocket expels hot gases at a very high pressure very quickly, and these gases have lots of energy, and according to Newton's third law, every action has an equal and opposite reaction. So, expel lots of gas at a high rate, and the energy of the gases being pushed out propels the rocket upward. Hope that helps!

Newton's Third Law states that "every action has an equal and opposite reaction". In a rocket, burning fuel creates a push on the front of the rocket pushing it forward. This creates an equal and opposite push on the exhaust gas backwards.

In two or more complete sentences explain how to balance the chemical equation,

Ca + N2 ⟶ Ca3 + N2 and include all steps.

Answers

Answer:

to balance this equation, your going to put a 2 in front of the "Ca" then that makes the equation look like this  "2Ca + N2 ⟶ Ca3 + N2" since the "Ca" had one atom, we added two more atoms

as we all know 1 + 2 =  3

then that gives us 3 "Ca's" on both sides

hoped this help and good luck on your test! :D

Explanation:

Jim ran 200 meters in 30.4 seconds. Mac ran 100 meters in 30.4 seconds. Who ran faster?

Jim, because his distance divided by time is less
Jim, because he ran a greater distance in the same time
Mac, because he ran the same distance in fewer seconds
Mac, because his rate of change of distance over time was constant

Answers

Jim, because he ran a greater distance in the same time :)

By the way, this is a maths question

Jim ran faster hope that helped you out my boy

answer this please sooo

Answers

Take your time and try again.
1) Matter
2) solid
3) Chemical
8) boiling

If a average person and a trained athlete where to exercise which pule rate would be slow and which pulse rate would be fast?

Answers

the average person would have a higher pulse rate when exercising because their body is not used to it, which makes it have to work harder to maintain that status

the athlete would have a slower pulse rate because their body is acclimated to the exercise and does not need to work as hard to maintain their body

An object with a mass of 24g and a volume 6mL has a density of?
a. 0.25 g/mL
b. 6 g/mL
c. 144 g/mL

Answers

A. 0.25 g/mL
Because 6/24 is 0.25

Answer:

4

Explanation:

No matter how you look at it none of those answers are correct because Density = Mass ÷ Volume, which is tehcnically 24 ÷ 6 = ?

? = 4

PLEASE HELP ME!!
What happens at the borders of major tectonic plates?


Radioactivity is very high and large amounts of uranium are found.


Earthquake and volcanic activity is evident.


The edges of plates break apart due to the crushing that occurs.


The borders are calm and free of plate movement activity.

Answers

Answer: continental crust is created and oceanic crust is destroyed.

Explanation:

Answer:

Radioactivity.

Steps of photosynthesis:

___ ATP molecules form.
___ Sugar molecules form.
___ Chlorophyll absorbs light energy.

Answers

Answer:

Chlorophyll absorbs light energy, ATP molecules form, sugar molecules form. I'm pretty sure this is correct, but if it is not I'm sorry...

Explanation:

1. Chlorophyll absorbs light energy
2. ATP molecules form
3. Sugar molecules form

here the answers for what is radiation?

Transfer of heat through objects touching the source
Transfer of heat through direct physical contact
Transfer of heat through electromagnetic waves
Transfer of heat through the movement of particles

Answers

Transferring heat through electromagnetic waves
C . Transfer of heat through electromagnetic waves

Radiation is said to be process where heat is transferred between two objects in the form of electromagnetic waves . In radiation two object dont need to be in direct physical contact for the heat transfer to happen .

please help in this,it will be such a help,ASAP,and ill put u brianlist first one!!!!!,both questions

Answers

Answer:1:T

Explanation:

Hope this helped! this is because it is true all the others don’t make sense.

The answer to it is T

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Asapp

Answers

Answer:

Agree

Hope this helps

Which shows the correct order of steps when using natural gas to generate electricity?

Energy is converted → gas is burned → boiling water makes steam → steam turns turbines
Gas is burned → boiling water makes steam → steam turns turbines → energy is converted
Boiling water makes steam → steam turns turbines → energy is converted → gas is burned
Steam turns turbines → gas is burned → energy is converted → boiling water makes steam i will give brainliest

Answers

The second answer o think
the second one, B.)

Gas is burned → boiling water makes steam → steam turns turbines → energy is converted
Boiling water makes steam → steam turns turbines → energy is converted

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most of them explode is the answer to that question
one or more substances are converted to a different substance. an example could be ( iron + oxygen = rust

Select all that apply. Wire is typically made out of metal because metal

Question 10 options:

Is malleable


Is ductile


Is brtittle


Conducts electricity

Answers

The correct answer is conducts electricity.

Metal is a really good conductor and is used in different electronics. It is also ductile, meaning it can be pulled into a thin wire.

Hope you have a wonderful day:)

Wire is typically made out of metal because metal is ductile and conducts electricity.

Ductility is the property of metal which makes it easy to be stretched into wire when drawn without breaking. This is a great feature for wires.

Conductor of  electricity : The ability for a material to allow electricity to pass through it with ease shows it is a good conductor of electricity.This is also a great feature for wires.

The transition metal, copper is usually  preferred for the manufacture of electrical wires This is because apart from being thermal resistant and cheap, it is very ductile and a good conductor of  electricity.

See more on the property of metals to make wires :https://brainly.com/question/13854828

Sugar, C6H12O6, is made of carbon, hydrogen, and oxygen atoms. Sugar is — (I WILL MAKE U BRAINLIEST


A. a compound because it is made of two or more atoms chemically combined and its parts cannot be separated by physical means

B. a mixture because it is made of different kinds of atoms but they are not chemically combined

C. a solution because it dissolves when mixed with water

D.an element because it is a pure substance whose parts cannot be separated

Answers

Sugar is a compound because it is made of two or more atoms chemically combined and its parts cannot be separated by physical means.

Answer:

A

Explanation:

D. is not the answer as there are many elements that go into Sugar

C. Is not the answer because it is not a solution

B. Is not the answer because they are not physically combined but chemically

Therfore A is the answer

15 points and brainiest (if there's 2 answers)
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation?

Please explain why
thank you

Answers

Answer: inherited variation
Explanation:
Because the coloring of the moths were a genetic mutation that helped strengthen the endurance and versatility of the moths by blending in with better environments

Is this right?
...........

Answers

Yes u are very right GOODLUCK!

2 more questions left

Answers

Answer:First one is 3
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