A beryllium atom contains 4 protons, 4 neutrons and 4 electrons. What is the atomic number of beryllium?
Answer:
Beryllium's atomic number is 4
Explanation:
Reason
Beryllium has 4 protons, 4 neutrons, and 4 electrons.This makes it a nuetral atom meaning that it contains an equal amount of protons and electronsThis means that beryllium has a atomic number of 4Answer:
the atomic number 4
Explanation:
What types of waves are sound and light? Explain how they would be classified based on the direction of their particle movement and whether they can move through a vacuum. Use details to support your answer.
Answer:
Longitudinal versus Transverse Waves versus Surface Waves
One way to categorize waves is on the basis of the direction of movement of the individual particles of the medium relative to the direction that the waves travel. Categorizing waves on this basis leads to three notable categories: transverse waves, longitudinal waves, and surface waves.
A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil up and down. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced upwards and downwards. In this case, the particles of the medium move perpendicular to the direction that the pulse moves. This type of wave is a transverse wave. Transverse waves are always characterized by particle motion being perpendicular to wave motion.
A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. Suppose that a slinky is stretched out in a horizontal direction across the classroom and that a pulse is introduced into the slinky on the left end by vibrating the first coil left and right. Energy will begin to be transported through the slinky from left to right. As the energy is transported from left to right, the individual coils of the medium will be displaced leftwards and rightwards. In this case, the particles of the medium move parallel to the direction that the pulse moves. This type of wave is a longitudinal wave. Longitudinal waves are always characterized by particle motion being parallel to wave motion.
A sound wave traveling through air is a classic example of a longitudinal wave. As a sound wave moves from the lips of a speaker to the ear of a listener, particles of air vibrate back and forth in the same direction and the opposite direction of energy transport. Each individual particle pushes on its neighboring particle so as to push it forward. The collision of particle #1 with its neighbor serves to restore particle #1 to its original position and displace particle #2 in a forward direction. This back and forth motion of particles in the direction of energy transport creates regions within the medium where the particles are pressed together and other regions where the particles are spread apart. Longitudinal waves can always be quickly identified by the presence of such regions. This process continues along the chain of particles until the sound wave reaches the ear of the listener. A detailed discussion of sound is presented in another unit of The Physics Classroom Tutorial.
Explanation:
What do these two changes have in common?
saliva breaking down a piece of bread
a penny tarnishing
Select all that apply.
both are caused by heating
both are chemical changes
both conserve mass
both are changes of state
Answer: both are changes of state and both are changes of state
Explanation:
.
The two changes like the Saliva breaking down a piece of bread and a penny tarnishing involves chemical change. Thus, the correct option for this question is B.
What do you mean by Chemical change?A Chemical change may be defined as a type of change that significantly involves the production of new substances from old ones by combining each other with different properties.
The action of saliva is stimulated by the action of the enzyme salivary amylase which hydrolyzed the starch into maltose, a disaccharide. A penny tarnishing involves the dissolution of copper oxide in a mixture of weak acid and table salt.
Therefore, the given two changes have in common that both are chemical changes. Thus, the correct option for this question is B.
To learn more about Chemical changes, refer to the link:
https://brainly.com/question/783768
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The image shows a week-old chick embryo. What can you conclude about its current stage of development? Help me please, it’s multiple choices
Answer:
1. A spinal column is present
5. It's about to undergo a metamorphosis
Explanation:
It's:
#1 because, you can clearly see the spine in the image.
#5 because, metamorphosis is a very common process which marks the transition between embryonic and adult life stages.
It's Not:
#2 because the chick already developed limbs and an beak.
#3 because chickens are vertebrates (animals that lack an back bone are invertebrates).
#4 because it's a chick, chickens are considered mature when they start laying eggs.
What does NASA expect to gain by studying the effects of long-term space travel on the human body?
Answer:
NASA studied astronaut twins Mark & Scott Kelly to determine the effects of staying in space for a year. ... Space presents unique stresses to the human body. With lower gravity levels, for example, bones and muscles are more likely to become weak since they no longer have to support the weight of the body.
Which of the following is the name for a hollow depression in which drainage collects?
A. canyon
B. cave
C. v-shaped valley
D. sinkhole
Answer:
D=sinkhole is the correct answer
A student made the following diagram to represent cellular respiration.
The title of the diagram is Cellular Respiration. An oval labeled Cell has five arrows around it. The arrow labeled Oxygen points towards the cell. The other four arrows labeled Glucose, Carbon dioxide, Water, and Energy point away from the cell.
Why is this diagram incorrect?
A)Water is not formed during this process.
B) Carbon dioxide is not formed during this process.
C)The arrow for oxygen should point in the opposite direction.
D)The arrow for glucose should point in the opposite direction.
Answer:
d) the arrow for glucose should point in the opposite direction.
Explanation:
PLEASEE HELPPPP QUESTION BELOW
An egret lives near cattle and eats insects stirred up by the cattle's grazing.
a. Neither
b. Commensalism
In a well-constructed paragraph, answer the question below.
What are two benefits of having a soft mostly hollow spongey part of our bones?
~Will give Brainliest if you give me a good paragraph and it's correct~
How are plants dependent upon the abioitc factors (3) of their habitat? (Identify the three abiotic factors and what they are needed for)
Answer:
Carbon dioxide, water, and sunligt
Explanation:
Carbon - The air plants breath to live.
Water - Gives them something to drink.
Sunlight - Helps them grow.
Carbon, water, and sunlight - To make their own food, which is glucose aka sugar.
Help please,, it’s the second part to my previous question
Answer:
Another factor can be photosynthesis.
Explanation:
During photosynthesis, plants would give off some oxygen as a waste product. The carbon dioxide would then move from the air into the leaves of the plants through tiny openings in the plant's leaves. Oxygen moves out of the plant's leaf through the same openings.
Amino acids are small molecules that make up proteins.
What information do genes determine when building proteins?
choose all that apply:
1)the amino acids that are used.
2)the order of the amino acids.
3)the location where the protein is built.
4)the total number of amino acids.
Put the following in order to show the path that sound travels through the ear.
mechanical energy is changed to electrochemical energy
sound strikes the eardrum
impulse is sent to by the auditory nerve to the brain
vibrations travel through the malleus, incus, and stapes
sound waves get to oval window
outer ear funnels and focuses sound
hair cells in the organ of Corti detect the wave
Answer:
Explanation:To show the path that sound travels through the ear, the following steps can be arranged in order:
1. Outer ear funnels and focuses sound: Sound waves enter the ear through the outer ear, which includes the pinna and ear canal. The shape of the outer ear helps to gather and direct sound waves towards the middle ear.
2. Sound strikes the eardrum: Sound waves reach the eardrum, also known as the tympanic membrane, and cause it to vibrate. The eardrum separates the outer ear from the middle ear.
3. Vibrations travel through the malleus, incus, and stapes: The vibrating eardrum transfers its energy to three small bones in the middle ear called the ossicles. These bones, known as the malleus, incus, and stapes, amplify and transmit the vibrations to the inner ear.
4. Sound waves get to oval window: The stapes bone in the middle ear transmits the vibrations to the oval window, which is a flexible membrane located in the inner ear. The oval window acts as the entrance to the fluid-filled cochlea.
5. Hair cells in the organ of Corti detect the wave: Within the cochlea, the vibrations of the fluid cause the movement of specialized cells called hair cells in the organ of Corti. These hair cells convert the mechanical energy of the sound waves into electrochemical signals.
6. Mechanical energy is changed to electrochemical energy: As the hair cells in the organ of Corti are stimulated, they generate electrochemical signals in response to the sound vibrations. These signals represent the sound information and are sent to the auditory nerve.
7. Impulse is sent by the auditory nerve to the brain: The electrochemical signals from the hair cells are transmitted to the brain via the auditory nerve. The brain then processes and interprets these signals as sound, allowing us to perceive and understand the sound we heard.
By following these steps in order, we can understand the path that sound takes through the ear, from the outer ear to the inner ear and ultimately to the brain for perception.
Help me ALL of these, and you get brainiest! (:
Answer:
1. Circulatory System
2. Respiratory System
3. Endocrine System
4. Nervous System
5. Urinary/ Excretory System
Explanation:
1. Circulatory System- The heart pumps blood and blood vessels such as arteries and veins, transports the blood to every part of our body providing organs and muscles with nourishment.
2. Respiratory System- This system maintains our breathing. It supplies the body with oxygen for cellular respiration.
3. Endocrine System- The glands of the endocrine system secrete chemicals called hormones that regulate most of the processes in our bodies like growth, reproduction, metabolism, etc...
4. Nervous System- The entire nervous system controls all of the other systems of the body and it also transmits information to the brain, such as pain and external sensations.
5. Urinary/Excretory System- This system is responsible for eliminating waste products of metabolism and other materials from the body that are of no use.
Small vertebrates may reach full growth within: A one year B one month C several years D one week
Answer:
B, one month
Explanation:
It really depends on what kind of Small vertebrates are in question, frogs take about 12 weeks for birds it takes about a month.
AYO PLEASE HELP ME WITH THIS
Answer:
D. Percolate
Answer:
Ayyy shawtyyyyyy, just saying this here my friend is percolate
Explanation:
I recently did an assignment like this
In the United States, which is responsible for ensuring the safety of the country's drinking water?
O A. Environmental Protection Agency (EPA)
B. Food and Drug Administration (FDA)
O C. National Oceanic and Atmospheric Administration (NOAA)
D. Center for Disease Control (CDC)
Answer:
B. Food and Drug Administration (FDA)
Answer:
b
Explanation:
it makes da most sense and imma smart boi duh
Summarize your findings in a brief essay. Your essay should include two parts Science class project weather forecasting
Which of the following gives the correct order of the Levels of Organization in the human body?
A. Cells > Tissues > Organs > Organ Systems > Organisms
B. Cells > Tissues > Humors > Organs > Organ Systems
C. Organisms> Organs > Organ Systems > Tissues > Cells
D. Cells > Organs > Tissues > Organ Systems > Organisms
Which best explains why water may be treated differently in different communities?
o A. Some communities avoid using groundwater.
O B. Groundwater requires more expensive treatments.
O C. Environmental factors vary between communities.
NEED ASAP
Why do you think it’s necessary for meteorologists (weather scientists) to study multiple types of data when
predicting upcoming weather? Which types of data are important?
Which ocean zone is the closest to the ocean's surface?
A- benthic zone
B- disphotic zone
C- aphotic zone
D- photic zone
Answer:
B
Explanation:
Answer:
answer is c aphotic zone
Explanation:
I hope it will help you
What is the difference between an endoskeleton and a exoskeleton? What types of animals have each?
Answer:
an endoskeleton is a skeleton on the inside of a living creature. look at endo like enter, its on the inside! an exoskeleton is on the outside of a living creature. think of exo as exit, its on the outside! animals with endoskeletons are like dogs, cats, fish, and raccoons. animals with exoskeletons are like spiders, ants, crabs, and snails.
please give brainliest :)
plz help <3 thx :) ( idek what to put anymore)
Imagine that you could dive deep into the Atlantic Ocean where the South American Plate and African Plates meet at a plate boundary.
Make a prediction: What do you think you would see at the plate boundary? Would you see the mantle? Why or why not?
Answer:
No
Explanation:
It is a divergent boundary but you will not see the mantle because the water will soften the rock in the mantle.
Info: I ALMOST HAVE 200 QUESTIONS ANSWERED!
(_¿? Question: ¿?_)
Which of the following statements is true?
Options:
A. Gene flow evens out genetic differences between populations.
B. Genetic drift increases the genetic differences between populations.
C. Natural selection, mutation, and genetic drift are random events.
D. The bottleneck effect increases the genetic diversity of a population.
Answer:
Natural selection, mutation, and genetic drift are random events.
Explanation:
A mechanism of evolution in which the frequencies of alleles of a population change with generations because of sampling error is known as genetic drift. It takes place in all the populations of non-infinite size, however, its influences are strongest in small populations.
Hope this helps :)
People who eat seafood might end up ingesting
☐ a. more than 5,000 tiny pieces of plastic each week.
☐ b. more than 10,000 tiny pieces of plastic each year.
☐ c. more than 3,000 tiny pieces of plastic each month.
Answer:
B.
Explanation:
Seafood eaters ingest up to 11,000 tiny pieces of plastic every year.
SOMEONE PLEASE ANSWER THESE!! 4 questions pleaseeee
Answer:
1. C
2. B
3. E
4. B
Explanation:
Which is a bioindicator?
A. current
B. water
C. rock
D. insect
Answer:
D.) Insect
Explanation:
A bioindicator is a living organism that gives us an idea of the health of an ecosystem.