Answer:
120 joule.
Explanation:
Given
For the stone X
Mass (m) = 2 kg
Height (h) = 2 m
Acceleration due to gravity (g) = 10 m/s²
Then we have the formula to calculate the potential energy
P.E 1 = mgh
= 2 * 10*2
= 40 joule
Now for Stone Y
mass (m) = 4 kg
height (h) = 4 m
acceleration due to gravity (g) = 10 m/s²
Now
P. E2 = mgh
= 4 * 10* 4
= 160 joule
Now the difference between their potential energy is
= P. E2 - P. E 1
= 160-40
= 120 joule
Hope it will help you :)
Why is the human heart cooled for surgery?
Answer:
By cooling the heart, its need for oxygen is reduced. This allows surgeons to work on the heart for two to four hours without damaging the heart tissue.
Answer: By cooling the heart, its need for oxygen is reduced.
Explanation:This allows surgeons to work on the heart for two to four hours without damaging the heart tissue.
Humans and dogs evolved from a common ancestor. Which pieces of evidence would support this? Check all that apply. Both of their adult forms look very similar. They both had a tail as an embryo. Their arm and leg structure is similar, but may have a different function. There are fossils of an organism that is half man, half dog in the fossil record. Both had gill slits when they were born.
Answer:
They both had a tail as an embryo.
Explanation:
Both human and dogs have tail as an embryo. Temporary tail-like structures are present in the human embryo. These tail like structure develop around the fifth or sixth week of gestation, having about 10 to 12 vertebrae and removed when it reached to its full development stage while on the other hand, tail present in dog's embryo also developed with time and we can see when the dog baby is fully formed.
Answer:
They both had a tail as an embryo.
Their arm and leg structure is similar but may have a different function.
Explanation:
They both had a tail as an embryo.Vestigial structures are those body parts that have lost or reduced their original function during the evolution of a species. These vestigial structures might be found in many animals, including human beings. Vestigial structures were plenty functional for common ancestors. But with evolution, they degenerated, stunted, and became rudimentary for some of the new species.
During the first 4 months of embryogenesis, all mammals have a tail at some point in their development. Dogs develop this structure and keep it during their whole lives, but humans lose it with time during embryogenesis. The tail disappears, and its forming vertebras get fussed with each other composing the coccyx, which represents a vestigial structure. This tailbone is the remnant of a missing tail.
In many animals, the function of the tail is to stabilize, equilibrate and mobilize. But in humans, the coccyx, located at the end of the vertebral column, has lost this original function.
Their arm and leg structure is similar but may have a different function.The fact that whales, humans, and dogs all have the same bones in the same order, but they matured differently in later embryological development, is an example of homologous characters.
Homologous characters have the same fundamental structures. They also share the same relations with adjacent structures, and they have the same embryological development.
These structures might show variations between organisms exhibiting them, according to their function and to the environment in which the organism lives.
These homologous characters are common in organisms related and that share a common ancestor.
Which antivenom will save Tyler?
Select one:
a.
Antivenom A
b.
Antivenom B
c.
Antivenom C
d.
Antivenom D
Answer:
b
Explanation:
Which antivenom will save Tyler?
Select one:
a.
Antivenom A
b.
Antivenom B
c.
Antivenom C
d.
Antivenom D
Answer:
A
Explanation:
It is A
Due today, please help
The nitrogen bases will only bond with one specific nitrogen base such as A - T and G - C. This is known as:
Complimentary Base Pairing
Plz help me I'll give branly stuff. plzzzzz
Answer:
The answer is B
In the process of respiration, organisms generally
a. use oxygen and give off carbon dioxide
b. use nitrogen and give off carbon dioxide
c. use carbon dioxide and give off oxygen
d. use carbon dioxide and give off nitrogen
Answer:
A
Explanation:
During respiration organisms use up oxygen given off by plants and give off carbon dioxide as by product
Do anyone why blood is red?
Answer:
Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that's crucial for carrying oxygen through your bloodstream.
Blood gets its bright red color when hemoglobin picks up oxygen in the lungs
the oxygen essentally makes it red
Explanation:
The gender of offspring from sexual reproduction is determined by
A the mother only, because she has two X chromosomes.
B the father only, because he has one X and one Y chromosome.
C environmental factors.
D polygenetic inheritance.
Answer:
B. the father only,because he has one X and one Y chromosome
1.What is the adaptation that is beneficial to organisms in the Mountain Rock environment?
2.What is the adaptation that is beneficial to organisms in the Desert Sand environment?
Answer:
Dense hair and thick skin.
Thin skin and Nocturnal behavior.
Explanation:
Dense hair and thick skin are the adaptation that is beneficial to organisms that is present in the environmental condition of Mountain Rock because on Mountain Rock, the temperature is very low so organisms needs something which make them warm, while on the other hand, thin skin and Nocturnal behavior are the adaptations that is beneficial to organisms in the Desert Sand environment because temperature is very hot.
1. What is the pH range for an acid?
A. 0 - 7- 14
2. What is the pH range for a base
A. 0 - 7- 14
3. What are the products of an acid base reaction?
A. water and salt
B. acid and base
C. water and sugar
D. water
4. What substance has a neutral pH?
A. ammonia
B. water
C. sodium bicarbonate
D. vinegar
5. The negative ion found in bases is the ______________
A. hydrogen ion (H+)
B. hydroxide ion (OH-)
Answer:
0-7-14
0-7-12
c is correct water and suger
d is correct vinegar
b is correct (OH-)
What is the function of mitochondria in prokaryotes?
Answer:
Prokaryotes lack mitochondria.
Which are the following statements are TRUE when concerning cells?
A: Prokaryotic cells can only produce eukaryotic cells
B:All cells come from pre-existing cells
C:Cells must always reproduce with other cells
D:Plant cells can only reproduce with animal cells
Answer:
I think it will option b hope it helps
What are the like terms in the expression: 2a + 3b+ 40 - 5a + 8 - 4
O 2,3,4,-5
O 2a, 3b, 4c
O-5a, 8
O2a, -5a, 8, -4
i need help plzz
Answer: 2,3,4,-5
Explanation:
it seems that 40 is supposed to be 4c.
the terms can be grouped in several ways
2a, -5a Contain factor ‘a’
8, -4. Simple integers/constants
2a, 4c, 8, -4. Even numbers
2a, 3b, 4c, -5a Contain a factor
Can’t group on + or - because values of a,b,c are unknown
From the available choices, only 2,3,4,-5 matches a logical group.
Drag each image to indicate whether it shows point source pollution or non-point source pollution
Answer: The first and the last are point source and the second and third are non-point source.
Explanation: I got these right on the quiz.
The first image and the last image are point source pollution while the second and third images represent non point source pollution.
A point source pollution refers to a pollution that is emerging from a particular point such as from a pipe. It is traceable to a given source. The non - point source pollution is not traceable to any particular source.
In the image as shown, the first image and the last image are point source pollution while the second and third images represent non point source pollution.
Learn more: https://brainly.com/question/8592296
17.
The human body uses carbohydrates as
Answer:
Carbs Provide Your Body With Energy
protiens
Explanation:
the four primary functions of carbohydrates in the body are to provide energy, store energy, build macromolecules, and spare protein and fat for other uses
If a male organism has 40 chromosomes in each body cell, how many chromosomes does a female of the same sex have in each of her body cells?
Answer:
40
Explanation:
they're usually the same
Why are some pathogenic bacteria able to make toxins?
5. The sodium-potassium pump is an example of
i. simple diffusion.
j. passive transport.
facilitated diffusion.
k. none of the above
Answer:
its passive transport
Explanation:
The sodium-potassium pump sets the membrane potential of the neuron by keeping the concentrations of Na+ and K+ at constant disequilibrium.
NEED HELP WITH THESE 4 QUESTIONS WILL GIVE BRAINLIST!!!
1.What were some characteristics that the finches developed to give them an advantage in surviving?
2.How do you think that the one species of finch evolved into many different species, each with its own advantages?
3. In what ways do these advantages help the finches to survive and reproduce?
4. What might have happened if the finches didn't evolve into many different species?
Answer:
1. Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.
2. Summary: Changes in the size and form of the beak have enabled different species to utilize different food resources such as insects, seeds, nectar from cactus flowers as well as blood from iguanas, all driven by Darwinian selection
3. Medium ground finches with larger beaks could take advantage of alternate food
4. three species of Darwin's tree finches have been known to inhabit Floreana but no birds singing that song on Floreana have been heard in many years.
Explanation:
9. The Sun's outward pressure of radiation is balanced by an inward pressure provided by
gravity
O fusion
fission
oxidation
Which statement describes the current theory about the relationship between the human population and mass extinction?
Answer:The human population is increasing, and historically, as human population has increased, species have gone extinct. As human population increases, and also destroy more habitats to pay for higher standards of living, the probability of mass extinction increases.
Explanation:
Answer:
Explanation:
It's a on edge
What are proteins compounds involved in?
Mallory has four aquatic plants
Answer:
that is really good for her
Explanation:
hope she is fine and healthy
What kind of bacteria are able to change pure nitrogen into ammonia compounds?
Group of answer choices
nitrifying
decomposing
nitrogen-fixing
denitrifying
Answer:
the anwer is nitrifying fixing as given in your text .
Explanation:
Decomposers also produce ammonia by converting animal waste and dead plants and animals into organic and inorganic materials, including ammonia.
what does it mean to live in Exponential Times?
Answer: If something grows exponentially it means really, really fast. Whatever happens as a consequence it hits up really, really hard in the last moment.
Explanation:
Describe the process of water moving in and out of the cell.
Answer:
Water moves across cell membranes by diffusion, in a process known as osmosis. Osmosis refers specifically to the movement of water across a semipermeable membrane, with the solvent (water, for example) moving from an area of low solute (dissolved material) concentration to an area of high solute concentration.
Explanation:
The workers who paid a rate for every day they work are known as
Answer:
piece work
Explanation:
I hope this is right
A model for how the solar system formed must explain
observations and reasoning. Identify each statement as
an example of an observation or reasoning. If a statement
is false or invalid, identify it as such.
a. Most of the mass of the solar system is in the sun.
b. The sun is composed primarily of hydrogen and
helium.
c. The sun formed more than 13.8 billion years ago when
the universe formed.
d. Most objects in the solar system orbit the sun in the
same direction.
e. If most of the mass of the solar system is in the sun
and the sun is mostly hydrogen and helium, then the
solar system must primarily be hydrogen and helium.
Answer:
The correct answer would be -
a. observation
b. observation
c. invalid
d. observation
e. reasoning
Explanation:
Any observation or statement form or generated by the understanding and nothing any event. The first statement is formed by observing the sun and the rest of the solar system and comparing its mass. The second and fourth statement is also observations made on fact or noticing the.
The fifth statement is reasoning as it deriving something from logic and fact. The third statement is invalid as the universe made before the sun.
tall pea plants are dominate over pea plants if two hybrids (Tt) are crossed
Answer:
Naruto usamaki is the greatest hokagey in the leaf village
