If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that

1 answer:

8 0

If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that seems to come from behind the surface (B). In theory, the sound waves hit the smooth surface and bounce off the surface. The sound also repeats itself. This is known as an echo. There needs to be a time gap between the sound and the echo otherwise the listener will not hear the echo. It will still be present but form part of the original sound.

You might be interested in

Use the drop-down menus to classify each worm into the appropriate group.

erastovalidia [21]

Answer:Planarians = flatworms

Marine worms = segmented worms

Pinworms = roundworms

Tapeworms = flatworms

Explanation:

I’m Built Different

7 0

3 years ago

Which would least likely be a cause of natural selection?

AnnZ [28]

Evolution would least likely be a cause of natural selection.
Natural selection has to do with the survival of the fittest. Therefore, adaptation, variation, and overpopulation all have an impact on natural selection - those who do not adapt to their new surroundings due to overpopulation or those whose bodies have not modified enough will not survive.

7 0

3 years ago

Read 2 more answers

Creating a prototype and troubleshooting are steps in the development of

MissTica

<span>One of the essential early steps in the inventing process is creating a prototype--which, simply defined, is a three-dimensional version of your vision. Creating a prototype can also be one of the most fun and rewarding steps you'll take. That's because developing a prototype gives you the opportunity to really tap into your creativity, using those skills that inspired your invention idea in the first place. And whether you're making your prototype at home or hiring the services of an engineer, seamstress or machinist, it's truly exciting to see your idea transformed into something tangible and real.</span>

6 0

3 years ago

Why is it important that we understand and are able to use the metric system?

Artyom0805 [142]

The metric system is a system of weights and measures that was first applied in 1795 in France. Experts everywhere the world use it as the international standard to evidently communicate data. The significance are the following:

• SIMPLICITY which is the metric system is much simple than the english system because it uses a standard conversion influence for all units.

• FAMILIARITY which is almost every nation excluding the united states has accepted the metric system as its official system of weight and measures.

• UNIFORMITY which is scientists use the metric system so all experiments are conducted using the same weights and measures.

• HISTORY which is the general session on weights and measures formally chosen six metric units to be used as international standards in 1954 and in 1960 and the meter was formally distinct established on the wavelength of light from krypton atoms.

• TYPES which is the metric system use meters for space, grams for mass, liters for volume and candelas for light.

7 0

3 years ago

Both viruses and cells have?

Marysya12 [62]

Answer:

The only structure or component that a virus and a cell have in common is Nucleic Acid.

Hope this helps. :-)

6 0

3 years ago