A student asks a serious of questions about a wave. The answer to which question will allow the student to determine whether the wave is electromagnetic or mechanical?

Answers

Answer 1

Answer:

Does the wave require a medium in order to travel?

Explanation:

The question whose answer would determine whether the wave in question is mechanical or electromagnetic would be if the wave requires a medium in order to travel or otherwise.

A mechanical wave would require a medium in order to transport its energy from one place to another, that is, travel. On the other hand, an electromagnetic wave does not require any medium in order to travel, that is, it can travel through vacuums or empty spaces. Light and sound waves are typical examples of electromagnetic and mechanical waves respectively.


Related Questions

how is a solute and a solvent different

Answers

Solute is substance which is dissolve in a solvent and Solvent is a substance that dissolves solute in a solution.
Answer: Solute is the substance being dissolved, and solvent is the substance that the solute is dissolving in. For example, 1 g of sugar in 100 mL of water. Sugar is being solved so it is the solute, and water is what the sugar is dissolving in so it is the solvent.

Which state of matter do mercury, orange juice and lava represent?

Answers

Answer:

they represent liquid state of matter.

Answer:

they state liquid state of matter .

hope it is helpful to you

Question 4 of 10
What is the molarity of a solution of 3 moles (mol) of FeBr3 in 1/2 L water?
A.
3 mol/2L
B.
2L/3 mol
C.
0.5L/3 mol
D.
3 mol/0.5 L
SUBMIT

Answers

Answer:

B

Explanation:

Answer:

D. 3 mol/0.5 L

Explanation:

Just took the quiz



2. What properties do all acids have?

3. Why should you never use taste as a method for testing an unknown substance?

4. What is used to detect the presence of acids?

10. What can you use to detect the presence of a base?

11. What are some common bases that we use every day?

12. How does an antacid help reduce heartburn?

13. What happens when acid and base are mixed

14. What is used to determine the pH of a substance?

15. Describe how the pH scale works. In other words, what is it actually measuring?

17. Why is pH important to our environment?

18. Describe how salt is formed.

Pls help!!!!!

Answers

2. They taste sour, are electrolytes, and react with active metals to produce hydrogen.

3. You should NEVER taste unknown chemicals because many are poisonous and can destroy body tissue.

4. Most often dyes are used to detect acids. The dyes will turn a certain color which indicates the presence of an acid.

10. You can use litmus to detect wether a solution is a base or an acid.

11. The most common bases I can think of would be: baking soda, laundry detergent, or soaps.

12. Antacids work by neutralizing the acids in your stomach.

13. When an acid and base are mixed together, they produce a salt.

14. Normally pH meters are used, but you can also calculate the pH using math. (yuck)

15. The pH scale measures how acidic or basic a substance is. It ranges from 0-14, with 7 being neutral.

17. pH is very important to the environment as it helps us measure and monitor for safe water conditions. A rise or fall from the average water pH level can indicate chemical pollution.

18. Salt is formed when an acid and base react with each other. It then has a cation of the base, and anion of the acid.

I hope those helps!! (:

how can you test a sample of soil for acidity or alkalinity​

Answers

Answer:

Scoop a soil sample into a fresh container, add 1/2 cup of water, and mix. Then, add 1/2 cup of baking soda. If the soil bubbles or fizzes, the soil is acidic. The reaction you're seeing is the result of acidic soil coming into contact with an alkaline substance (baking soda).

Explanation:

Hope this helped!

10 g of copper is heated and the mass increases to 12.5 g. What is the mass of the copper in the new substances?

Answers

Answer:

10g

Explanation:

The amount of copper in the heated mass of the new substance produced is still 10g because in any chemical action, mass is always conserved.

According to the law of conservation of matter "matter is neither created nor destroyed in a chemical reaction". The change in mass is only due to oxygen gas that combines with the new copper formed or other substances that joined the mass. The substance will still have the same amount of copper as the original one. Since we started with 10g of copper, we end with 10g of copper.

In an experiment conducted between oxygen and chlorine gas it was found that oxygen gas spread much faster than chlorine. What is the explanation for this observation?

Answers

Answer:

Because oxygen is lighter

Explanation:

How many orbitals surround the nucleus in a neutral atom of sulfur (S)?
1
3
5
6

Answers

it would be 3 have a good day

Which models of the atom does the experimental evidence from Bohr's hydrogen experiment support? Explain why these models are compatible with the experimental results.

The models are Daltons, Thompsons, and Rutherfords

Answers

Answer:

Rutherfords

Explanation:

The model of the atom supported by Bohr's hydrogen experiment is the Rutherford's model of the atom.

Rutherford through his experiment on gold foil suggested the atomic model of the atom. The model posits that an atom has a small positively charged center(nucleus) where nearly all the mass is concentrated.

Surrounding the nucleus is the large space containing electrons. In the Bohr's model of the atom, he suggested that the extranuclear space of the atom is made up of electrons in specific spherical orbits around the nucleus.

When you climb to the top of a water slide, you are gaining:
O A. gravitational kinetic energy.
B. chemical potential energy.
c. gravitational potential energy.
D. chemical kinetic energy.

Answers

Answer:

C

Explanation:

You climbing the water slide gives you potential energy and your building gravitational eneergy.

When we climb the top of a water slide we are gaining gravitational kinetic energy. That is we are moving through the surface and thus we experience both kinetic energy and gravitational energy.

What is  kinetic energy?

Kinetic energy of a body is generated by virtue of its motion. Gravitational energy is a form of energy by which the an object attracts other object to its center of mass. Both forms of energy are  directly proportional to the mass of the object.

Potential energy is generated by virtue of  the position and height of the object. As the height from surface increases, potential energy increases. Potential energy and kinetic energy together called as mechanical energy of an object.

When starts moving our potential energy is converting to kinetic energy. Hence, when we climb the top of a water slide kinetic energy starts to increase. Thus, option A is correct.

To find more on kinetic energy, refer here:

https://brainly.com/question/26472013

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List and define the 3 parts of a chemical equation (R->P).

Answers

Answer:

R- reactants

arrow- yields

p- products

Explanation:

Write the electron configuration for the electrons identified by the following quantum numbers:

a) 2, 1, 0, -½
b) 4, 2, 0, -½
c) 5, 3, 2, -½

Thanks!

Answers

Answer:

see the answer at the pic

The electron configuration for the electrons as listed are:

a) 1s² 2s² 2p⁵ = 9X

b) 1s² 2s² 2p⁶ 3s²  3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d⁸ = 46 X

c) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴

Using the quantum numbers of the identified electrons to derive the electron configuration ( the representation of the distribution of electrons in the orbit of  an atom ) electron configuration of electrons can be calculated using the formula :2n².

where n = orbit number and the various energy levels are represented as 1,2,3,4... while shells of the an atom is written as K,L,M,N

hence the electron configuration of the electrons identified by the quantum numbers are as written above.

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which statement below best describes the movement of particles in a gas?
A- the particles vibrate in a fixed position
B-the particles slide easily past one another
C- the particles move freely and are well separated
D- the particles move freely with little free space between the particles.​

Answers

Answer:

c the particles are spaced out and move freely

Explanation:

Answer:

C). The particles move freely and are well separated

Explanation:

Question 14
1 pts
How many moles of NaCl could be found in 0.4 L of a 0.9 M solution? Round your answer to
two decimal places.

Answers

Answer:

0.36mol

Explanation:

Given parameters:

Volume of NaCl  = 0.4L

Molarity  = 0.9M

Unknown:

Number of moles  = ?

Solution:

To find the number of moles, the molarity of a solution is the amount of solute contained in a solution.

 Molarity  = [tex]\frac{number of moles}{volume}[/tex]  

 Number of moles = molarity x volume

 Insert the parameters and solve;

 Number of moles = 0.4 x 0.9  = 0.36mol

3. Does the siren of a moving police car seem to change pitch to the
police officers inside the car? Why or why not?

Answers

Answer:

As the police car moves towards them, the pitch of the police car's siren goes up because the sound waves get closer together in front of the police car. When the police car moves away from the person, the pitch goes down because the waves spread out behind the police and that makes the frequency go down.

Explanation:

Can someone help me plz for BRAINLIST I swear I’ll give it to you !! I’m in 6th grade ( just started ) please help I’m begging !!

Answers

Answer:

Lithium                    Li                        3                 3                 4

Titanium                Ti                        22               22               26

Cobalt                   Co                      27                27               32

Silicon                    Si                       14                 14                14

Platinum                 Pt                      78                 78               117

Bromine                 Br                      35                 35               45

Nickel                     Ni                     28                  28               31

Manganese            Mn                   25                    25             30

Boron                      B                       5                     5                6

Oxygen                   O                       8                     8                8

Zinc                         Zn                      30                  30             35

Lead                        Pb                      82                   82            125

Explanation:

Can I have brainliest? This took me like an hour to find the answers and type the answers. TYSMMMMMMMMMMMMMMM  

Edit: I am also in 6th grade, but I looked it up because I haven't learned this yet.

Please help i will give brainliest

Answers

Question 2 answer is A

PLEASE HELP ME !!!!!!!

Answers

Answer:

it would be 5,045

Explanation:

because it is closer to 5,000. pls correct me if wrong

When the following equation is balanced, what is the coefficiant for Br?

___I2 +___NaBr rightwards arrow___NaI +_?_Br2

A.
6

B.
3

C.
1

D.
2

1 points

QUESTION 10

The previous question is an example of what type of chemical reaction?

A.
Synthesis

B.
Decomposition

C.
Single Re-Placement

D.
Double Re-Placement

Answers

Answer:

1. A 2. C

Explanation:

because it just is

A wave is a _____that transfers _____ through a ______
A.) medium, disturbance, energy
B.) disturbance, energy, medium
C.) energy, disturbance, medium
D.)disturbance, medium, energy

Answers

The correct answer is B.) disturbance,energy,medium

A wave is a  disturbance that transfers energy through a medium. There

are types of  such as sound and light waves.

A wave involves the transfer of energy such as sound, light waves etc

through a medium. The medium could be through liquids , solids or air and

they have characteristic waves which pass through them.

When a wave transfers energy through a medium, the matter involved

doesn't experience any type of movement.

Read more on https://brainly.com/question/19210453

The growth of a plant toward light is called _____.

phototropism
tropism
geotropism

Answers

It's called phototropism

Answer:

The answer is (Phototropism)

How are elements and compounds a part of our daily lives?

Answers

Answer:

Aluminium (A1) -Used in the production of duralumin alloy for use in the construction of aeroplane bodies. 3. Silicon (Si) -To make microchips 4. Sulphur (S) -To make matches, fireworks and for the manufacture of sulphuric acid 5.

Explanation:

Hope this helped!

Answer:

yes

Explanation:

we use different elements and compounds in our life ex salt and iron but most of the substances found in our environment are mixture btw scientists need to classified substances to work with our substances and to study pure substances hope it helps u

Why should a hypothesis be testable?
A. It must be testable in order to be found true or false.
B. It must be testable for the outcome to be predictable.
C. It must be testable for other scientists to consider it reliable.
D. It must be testable if it is to become a scientific theory.

Answers

A. It must be testable in order to be found true or false.

why burning of wood and cutting it into small pieces are considered as two different types
of changes.in sort type
.
اور بس انتي شلال​

Answers

Answer:

burning causes pollution cutting results furniture

Explanation:

are u a nepali ?

Answer:

burning of wood, new substances are formed and hence it is a chemical change. While cutting the wood into small pieces no new substance is formed, thus it is a physical change. Hence, burning of wood and cutting it into small pieces are considered as two different types of changes.

what is the density of a 100g piece of titanium if a 10g piece of titanium has a density of 4.506g/cm3?

Possible answers:
A: 45.06g/cm3
B:4.506g/cm3
C: 9.1g/cm3
D: 91g/cm3

Answers

Answer:

B. Density stays the same no matter how much of a substance there is.

Explanation:

Density of the substance is the same and it is the measure of its mass per unit volume. Thus, the mass of titanium per  1 cm³  is 4.506 g which is the same for 10 g, 100 g or whatever the mass.

What is density ?

Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed.  Density of an object depends on its bond type, temperature and pressure.

The more denser the object is , more will be its mass distribution per unit volume. Substances denser than water will sink on it otherwise they float on water.

Density is constant for a substance, the distribution of given mass per unit volume is same for all masses. Hence, the density of 100 g Ti is same as that of 10 g. i.e., 4.56 g/cm³.

To find more on density, refer here:

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I WILL GIVE BRANLIEST What factor is the temperature in an ecosystem? Abiotic or Biotic?

Answers

Abiotic I think

“ temperature is an abiotic factor with an ecosystem abiotic factors are the parts of an ecosystem that are nonliving such as weather and temperature”

Answer:abiotic .

Explanation:

a solid sample of oil until it turns an iquid. which property of the oil will decrase?

Answers

Answer:

Density of the oil

Explanation:

As the oil sample is warmed and it turns liquid, the density of oil will decrease due to increase in volume of the oil.

Warming of the oil increases the volume of oil as it melts. The once solid oil becomes more mobile and takes up more space. Although the mass is the same. Since volume increases, the density of the oil will reduce because, density is the mass per unit volume of a substance.

please help me..........​

Answers

Answer:

4/6

6/9

8/12

Explanation:

What is Jadi? is it goat? what language is Jadi?

PLEASE HELP!!!!!!!!
Step 4: Create Lewis dot diagrams.
a) Draw Lewis dot diagrams of the reactants and products on the paper with your chemical equation.
b) Select a different color to use for each element in the chemical reaction. Use your chosen color
for the element’s symbol and for its valence electrons.
c) Label these diagrams “Lewis Dot Diagrams.”

Answers

Answer:

Hey student your question is not proper arrange, i don't understand what you want us to do

Which equation represents a double replacement reaction?

A) 2 Na + 2 H2O → 2 NaOH + H2
B) CaCO3 → CaO + CO2
C) LiOH + HCl → LiCl + H2O
D) CH4 + 2 O2 → CO2 + 2 H2O

Answers

Answer:

C) LiOH + HCl → LiCl + H₂O

General Formulas and Concepts:

Chemistry - Reactions

Synthesis Reactions: A + B → AB Decomposition Reactions: AB → A + B Single-Replacement Reactions: A + BC → AB + C Double-Replacement Reactions: AB + CD → AD + BC

Explanation:

Step 1: Define

RxN A:   2Na + 2H₂O → 2NaOH + H₂

RxN B:   CaCO₃ → CaO + CO₂

RxN C:   LiOH + HCl → LiCl + H₂O

RxN D:   CH₄ + 2O₂ → CO₂ + 2H₂O

Step 2: Identify

RxN A:   Single Replacement Reaction

RxN B:   Decomposition Reaction

RxN C:   Double Replacement Reaction

RxN D:   Combustion Reaction

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