Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can hear him through the other. What is the best reason to explain why this happens?
A. Sound waves can travel great distances.
B. Sound waves from whispering have a higher frequency.
C. Sound waves travel better through solids than gases.
D. Sound waves produce an echo.

Answers

Answer 1

Answer:

C

Explanation:

Because you can feel vibrations through solids but not through gases

Answer 2

Answer:

c

Explanation:

Because you can feel vibrations through solids but not through gases


Related Questions

1. Why is only a small portion of the solar energy that strikes Earth's atmosphere stored by primary producers?

Answers

Explanation:

only a fraction of radiation strikes plants or algae and only a portion of that fraction is of wavelengths suitable for photosynthesis and much energy is lost as a result of reflection or heating of plant tissue

Only a small portion of the solar energy that strikes Earth's atmosphere is stored by primary producers primarily due to the limitations and inefficiencies in the process of photosynthesis.

Photosynthesis is the biological process by which primary producers (such as plants, algae, and some bacteria) convert solar energy into chemical energy in the form of glucose (a type of sugar). However, photosynthesis is not a perfectly efficient process, and several factors contribute to the small fraction of solar energy being stored:

Reflection and Absorption: Not all incoming solar energy is absorbed by the plants. Some of it is reflected back into space or absorbed by other substances in the atmosphere, water bodies, or the Earth's surface before reaching the photosynthetic organisms.

Wavelengths: Solar energy reaches Earth in the form of electromagnetic radiation, which includes different wavelengths. Chlorophyll, the primary pigment responsible for capturing light during photosynthesis, is most efficient at capturing certain wavelengths, particularly in the blue and red regions of the electromagnetic spectrum. The rest of the spectrum is less effectively utilized by the photosynthetic organisms.

Light Availability: Photosynthesis requires sunlight, so the amount of energy captured is also influenced by factors like the length of day and cloud cover. Weather conditions can limit the availability of sunlight, impacting the overall energy capture.

Respiration: Plants and other primary producers also use some of the energy they capture for their metabolic processes, including respiration, where they consume glucose to obtain energy for growth, maintenance, and reproduction. This reduces the net amount of energy stored as biomass.

Losses in Growth and Reproduction: Not all stored energy is converted into plant biomass. Some energy is used in growth and reproduction, while some is lost as heat during metabolic processes.

Hence, these factors contribute to the limited efficiency of photosynthesis and explain why only a small portion of the solar energy that strikes Earth's atmosphere is stored by primary producers as chemical energy in their tissues.

To know more about solar energy here

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plsss help me i need the answers

Answers

Answer: 400N

Step-by-Step Explanation:

We know, F = ma
m = 200kg
a = 2 m/s^2

Therefore,
= m * a
= 200 * 2
= 400 N

If this Answer helped, please mark it as Brainliest. Thank you!

You find the answer by solving the problem.


You can solve the problem by using the equation that tells how force, mass, and acceleration are connected.


The equation is in the "Hint".


F = m • a


Force = mass • acceleration


mass = 200 kg


acceleration = 2 m/s^2


Force = (2000 kg) • (2 m/s^2)


Force = 400 Newtons



3. How does species richness relate to area?

Answers

Answer:

So increasing habitat size (or area) can increase species richness. In general the larger an area is the more species it will contain (up to an equililbrium point – the carrying capacity for # species in a given habitat). This relationship can be graphed (see below).

Explanation:

that the explanation.

Which two conditions explain why special technology is required to study the
deepest parts of the ocean?
A. Extremely high pressure
B. Thickness of ice on the ocean floor
C. Unusually high oxygen levels
D. Uneven terrain on the ocean floor

Answers

Answer:

A. Extremely high pressure

A- extremely high pressure

How can a charged balloon attract a wall without any contact?

(A) The positive charges of the uncharged wall move to the outside.

(B) The wall changes shape and the positive charges move to the inside.

(C) The negatively charged balloon repels and moves away from the wall.

(D) A positive charge in the balloon attracts the negative charges in the wall.

Answers

Answer:

d because opposites attract

Answer:The wall changes shape and the positive charges move to the inside.

Explanation:

Use the following scenario to answer the question.

The desk for Caron’s new office weighs 500 Newtons. What would be the impact of an applied force that pushes from below at 475 Newtons?

(1 point)

The desk would move upward.


The desk would move forward.


The desk would change directions.


The desk would stay where it is.

Answers

Answer:

The desk would move upwards.

Explanation:

The force that pushed from below is 475N and the desk weighs 500 Newtons. So the desk is heavier than the amount of force being pushed on it, so it will stay the place and will not move.

12. Explain why domestic producers who supply a good that competes with imports would prefer an import-substitution approach to trade policy rather than an export-promotion approach. Which policy would domestic consumers prefer and why?

Answers

Answer:

Explanation:

you didnt answer my  question so ya i am in 6 grade i dont now that sorry

5. How does privatization contribute to productivity?

Answers

Answer:

increased competition

Explanation:

7. What three poverty traps help explain the plight of Ntions comprising the poorest billion people?

Answers

Answer:

(1) civil wars. (2) allowing resource wealth to cause internal conflicts and undermine democracy. (3) tolerating a dysfunctional and corrupt government.

8. Why might ChiN want to keep the price of the yuan low? Who suffers from this policy?

Answers

Answer:

Experts claim that China is artificially keeping the Yuan low in order to get an unfair trade advantage.

Explanation:

12. Describe the different policy trade-offs implied by the short-run Phillips curve and the long-run Phillips curve. What forces shift the long-run Phillips curve?

Answers

Answer:

Hello new user! Here on Brainly, you can ask questions that you may be struggling with on here, and students all around the world can answer your question, or you may find that your question has already been asked before and is on here. And you can answer questions and help others too! when you answer a question, you can earn points which you can use to ask questions. you can also earn badges such as the answer master badge. you can get this badge after answering 25 questions in any subject! or the history nerd badge, which I just got. You can get this badge when you answer 10 history questions. there are a total of 222 achievements you can earn! you can also move up different ranks which are: the beginner, helping hand, ambitious, virtuoso, expert, ace, and the last one, genius. you can learn more about the ranks by clicking the orange box directly under your username! You can also 'thank' people by clicking on the heart icon when an answer shows up, and rate it by clicking the stars at the bottom of the answer. You can also pick a 'brainliest' which is a little crown icon that only shows up when there are two answers. I don't think I am missing anything, but I may be! I hope this helps and you have a great time on brainly! Have a great day!

If the mass of a duffel bag is less than the mass of a suitcase, what is true if both are slid across an airport floor?(1 point)

Both objects would be able to move at the same time.


The duffel bag will contain more matter than the suitcase.

It would be much easier to stop the duffel bag than it would be to stop the suitcase.


It would be more difficult to stop the duffel bag than it would be to stop the suitcase.

Answers

Answer:

First on: False

Second one: False

Third: True

Fourth: False

Explanation:

If the duffel is less, all of the above is true.

Answer:

The Answer is C

Explanation: the duffel bag weighs less so it would take less force to stop

4. And why do some producers try to block imports?

Answers

Answer:

to shield domestic markets from foreign competition.

Explanation:

The blue gill is a type of fish that lives in Indiana ponds. It's diet consists of insects snails other small fish and fish eggs. What role does the bluegill play in the food web of a pond? (And i couldn't find science so i put it under physics)

Answers

Answer:

Bluegills are the primary food source in every farm pond. They spawn from May to September and provide a large amount of food to the predators in the pond.

Explanation:

^^^^^^^^^^^^^^^^^^^^^^^^

Can someone answer this

Answers

Answer:

b

Explanation:

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

b is the correct answer

Which wave has highest energy?

1) A high amplitude, high-wavelength wave.
2) A low amplitude, low-wavelength wave.
3) A low amplitude, high-wavelength wave.
4) A high amplitude, low-wavelength wave.

Answers

Answer:

2) A low amplitude, low-wavelength wave

Number two A low amplitude low wavelength wave





Genetic variation can occur amongst siblings since:

PLEASE HELP ME 2 more questions

Answers

Answer:

d: each offspring inherts a unique combination of genes from both parents.

Explanation:

each offspring inherits a unique combination of genes from both parents!

What data will the simulation provide about your design? You will also need a control (something you don’t change) that you can use as a comparison to see how effective your design is. Explain how you will set up a control.

Answers

Answer:

yes you will need a control

Explanation: all i know is that you need a control i don't know how to set it up lol sorry

is it possible to breed a black haired long tailed retriever? If so, what percentage is possible? PLEASE answer the corrects answers pleaseeeeeeeee if u do i will give u extra points this is science btw

Answers

Answer: it can be considered a genetic mutation with a history of a Golden Retriever in their blood but it is very rare. and there our some black retrievers you can buy too. i hope i helped

Explanation:

Yes it is I say it would be like a 30% chance

11. How did the steel tariff affect the domestic steel industry, the workers in the steel industry, workers in steel-use industries, and consumers?

Answers

Explanation:

Substantial tariffs on steel imports would raise U.S domestic prices and will boost the industry. Without protection, nearly 60,000 U.S steelworkers can lose their jobs. Besides, there are many steel consumers, such as automakers and construction companies.

Can someone answer this

Answers

Answer:

Tampa, FL would experience precipitation in form of rain.

Explanation:

This is because in the key, it shows that it has low pressure and according to the passage, if there is low pressure, clouds would form, giving the area a higher chance of rainfall.

Yes or no we can say

Can someone answer this

Answers

Answer:

A. The probable direction of storm movement for the next 12 hours.

Answer:

  A. The probable direction of storm movement for the next 12 hours.

Explanation:

In the northern hemisphere, air circulation is counterclockwise around a low pressure system. The arrow drawn on the diagram is below (south of) the center of low pressure, so the winds will be to the east in that area. The arrow is pointed in the direction of probable frontal system movement.

__

Other answer choices:

The map is of a portion of the eastern part of the North American continent. There is no ocean in the area of the frontal system or the arrow, so ocean currents are irrelevant to what the arrow is showing.

Convection currents in the atmosphere are vertical air currents. The horizontal arrow cannot show anything about convection currents.

Due to jet stream and trade wind direction over North America, the storm system shown would have originated farther to the north and west. The arrow points to the east northeast, so is not pointing in the direction of the origin of the storm system.

5. We run huge trade imbalances with two countries. Explain the cause of the imbalances.

Answers

Answer:

One country could be gaining more benefit than the other.

variables that affect the amount of current flowing in a circuit​

Answers

Answer:

In a closed electric circuit, resistance of the components and the voltage of a power source are affecting the electric current.

8. What was the major sticking point holding up progress in the Doha Round?

Answers

Answer:

opening up agricultural and industrial markets in various countries and how to cut rich nation farm subsidies

Explanation:

.

In a group of Channel catfish, some individuals have a brown body and others have a white
body. In this group, the gene for the body color trait has two alleles. The allele B is for a
brown body, and the allele b is for a white body.
A certain Channel catfish from this group has a brown body. This catfish has one allele for a
brown body and one allele for a white body.
Based on this information, what is this Channel catfish's genotype for the body color gene?
a brown body
Bb
bb
a white body

Answers

Answer:

Bb

Explanation:

If the fish is brown, it had the dominant genotype.

Why do most amphibians return to the water to reproduce?
A *Amphibians must return to the water to find a mate.
B *Fertilization can only occur externally in the water.
C *Amphibian eggs do not contain a protective shell.
Pls help

Answers

C. amphibian eggs do not contain a protective shell
C, amphibian eggs do not contain a protective shell

8. Why would ChiN want its own currency to be undervalued relative to the U.S. dollar? How does ChiN maintain an undervalued currency?

Answers

Answer:

The Chinese government wish to keep the currency undervalued because: A weaker exchange rate makes exports more competitive and increases demand for Chinese exports. Chinese economic growth is dependent on exports, so the value of the currency plays a key role in boosting growth.

Explanation:

5. Why does a Ntion try to influence the value of its currency?

Answers

Answer:

If inflation is relatively lower than competitors, then the countries goods will become more attractive and demand will rise. Lower inflation tends to increase the value of the currency in the long term.

Explanation:

Provide one reason why it would be hard for an alien to view the Earth with a light telescope.

Answers

Answer:

The Earth is a very bright object when viewed with a light telescope. The light from the sun reflects off of the Earth's surface and this makes it very difficult to see anything else.

Explanation:

The brightness of the Earth makes it difficult for an alien to view it with a light telescope. The light from the sun reflects off of the Earth's surface and this makes it very difficult to see anything else. The light from the sun can also cause the Earth's atmosphere to glow, making it even harder to see anything else.

from space, with the reflections of the sun and other vectors of light, the earth is pretty bright for the normal human eye. if the alien has similar optics, it would be quite difficult to see the earth in good detail
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