Una persona hala un trineo a lo largo de un espacio horizontal de 9 m la cuerda con que sa hala forma un ángulo de 60° con la horizontal y la fuerza para mover el trineo es de 125 N a. Calcular el trabajo realizado por la persona al halar el trineo
Answer:
978,75 Newton metro.
Explicación:
El trabajo realizado es de 978,75 Newton metro cuando la fuerza es de 125 newton, la distancia es de 9 metros y el ángulo es de 60 grados porque cuando usamos la fórmula del trabajo realizado obtenemos esta respuesta. La fórmula del trabajo es fuerza x desplazamiento x Sin (θ). θ muestra la dirección y el ángulo en el que se realiza la fuerza. Entonces, multiplicando todos estos valores obtenemos la respuesta para el trabajo realizado, que es 978,75 Newton metro.
What best describes a high pressure system? Question 4 options: Warm, rising air that creates cloudy, rainy weather Warm, rising air that creates clear, sunny weather. Cool, sinking air that creates cloudy, rainy weather Cool, sinking air that creates clear, sunny weather
Answer:
a high pressure system : Cool, sinking air, that creates clear, sunny weather.
Explanation:
The characteristics of the high-pressure system is marked by the presence of the cold and sunny days as compared to those of the warm and low-pressure pressure regions of the world. The air is light and lifts up easily and hence leading to the formation of clouds and rainfall. As compared to the cold air mass that is dense and hence has low moisture contents.This picture below shows the fossil of three species of mosasuar, large marine reptiles that are now extinct what do similarities in these mosasaur indicate
The similarities in the fossil fuels of the given species of the mosasaur indicates a close relationship between the organisms.
The fossil records of the extinct organisms are used for studying the characteristics of their genome and it also helps to understand the similarities and differences between the different species of the same organism which have become extinct.
Several fossil records of thousands of organisms have been recovered and studied by the paleontologists till date. The study of these fossils have suggested that the organisms that have become extinct were very different from the organisms that are found to be present today.
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The diagram below represents some events that take place in plant cells. In which organelle will this occur?
Sugar 02
QA
> CO2
ADP-ATP
H20
O mitochondrion
O chloroplast
O lysosome
nucleus
Answer:
mitochondrion
Explanation:
there is production of energy and co2 and h20 which means the process is respiration which takes place in the cytoplasm or mitochondrion
9. Nulceus
(1 Point)
O plant
O animal
O both
10. Vacuole
(1 Point)
O plant
O animal
O both
Answer:
1. Both2. Both
Hope this helps!
The picture below demonstrates which type of chromosome mutation?
Answer:
I feel like it's a Translocation Mutation
Explanation:
( :
economic importance of lizard in agriculture
Answer:
Reptiles play an important role in the balance of an Ecosystem. In most ecosystems, reptiles are the vital part of food chains and they play a huge role both as the prey species and the predators in ecosystems. They also play the role of a pollinator. Many serious agricultural pests were eliminated by the reptiles
Mike is studying the phylogenetic tree for big cats.
A big cat phylogenetic tree is shown. A bracket goes to clouded leopard and to another bracket. That bracket goes to 2 additional brackets. One bracket goes to tiger and snow leopard. The other bracket goes to janguar and another bracket. The other bracket has lion and leopard.
He made several statements about the tree. Which statement is not true?
The leopard is more closely related to the jaguar than to the snow leopard.
The leopard is more closely related to the tiger than to the clouded leopard.
The leopard is more closely related to the snow leopard than to the clouded leopard.
The leopard is more closely related to the tiger than to the snow leopard.
Answer: D: The leopard is more closely related to the tiger than to the snow leopard
Explanation:
The leopard is equally related to the tiger and the snow leopard
The leopard is more closely related to the tiger than to the snow leopard.
What is phylogenetic tree?A phylogenetic tree, also known as a phylogeny, is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor.
Why phylogenetic tree is important?Phylogenetic trees are important tools for organizing knowledge of biological diversity, and they communicate hypothesized evolutionary relationships.
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NEED HELP ASAP:
Which of the following describes DNA methylation?
A.) A mechanism involving attachment of methyl groups to certain bases to increase the rate of transcription.
B.) A mechanism involving attachment of methyl groups to certain bases to facilitate the binding of DNA to intermediate filaments.
C.) A mechanism involving attachment of methyl groups to certain bases leading to apoptosis.
D.) A mechanism involving attachment of methyl groups to certain bases for the long-term inactivation of genes during development.
Hello, I Am BrotherEye
Answer:
D.) A mechanism involving attachment of methyl groups to certain bases for the long-term inactivation of genes during development.
Explanation:
View Above
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BrotherEye
The statement that can be used to describe DNA methylation is "A mechanism involving attachment of methyl groups to certain bases for the long-term inactivation of genes during development."
Option D.) is correct.
Define DNA methylation.DNA methylation controls gene expression by attracting proteins implicated in gene repression or preventing transcription factor(s) from binding to DNA. The pattern of DNA methylation in the genome varies during development as a result of a dynamic process that includes both de novo DNA methylation and demethylation.
DNA methylation is an epigenetic mechanism that happens when a methyl group is added to DNA, altering the function of genes and influencing gene expression.
It's a process that involves attaching methyl groups to specific bases in order to inactivate genes for a lengthy time throughout development.
So, the statement that can be used to describe DNA methylation is option D.)
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the s checkpoint just before the entry into the s phase makes the key decision of whether the cell should divide
Answer:
Yes that is correct becuase people have hade the technology to do that.
Explanation:
Amoebas are single-celled organisms that contain a nucleus. They are
O eukaryotic
O bacterial
O fungal
O prokaryotic
Answer:
eukaryotic
Explanation:
eukaryotic
( it deleted my answer)
Ainhoa belonged to the rock club. She was learning about different types of rocks. Which of the following rocks is formed through squeezing and heating? *
A.Crystal Rock
B.Igneous Rock
C.Metamorphic Rock
D.Sedimentary Rock
Answer: Metamorphic rock.
1. Process that breaks down rock into smaller pieces but does not change what the substance is
2. Process that breaks down rocks into smaller pieces AND CHANGES THE SUBSTANCE INTO SOMETHING DIFFERENT
Exfoliation
Chemical weathering
Deposition
Physical weathering
Frost action
What is the speed of the car at 15 seconds time?
Can anyone please answer it for me pleaseeeeee
Answer:
what is the question
Explanation:
tell we we will solve it within minutes
Answer:
Hi, I don't see any of the following questions
Which is a unicellular fungus?
A Slime mold
B Mushroom
C Yeast
D none of these
Explanation:
Unicellular fungi are generally referred to as yeasts. Saccharomyces cerevisiae (baker's yeast) and Candida species (the agents of thrush, a common fungal infection) are examples of unicellular fungi. Example of a unicellular fungus: Candida albicans is a yeast cell and the agent of candidiasis and thrush.
Why does the moon have a stronger influence on the Earth, than the sun, causing tides?
a. The moon is much, much closer to the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
b. The moon is larger than the sun, causing a greater gravitational pull on the Earth and Ocean.
c. The moon is further away from the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
Answer:
The Correct Answer Is A:
The moon is much, much closer to the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
Explanation:
sure the sun is wayyy bigger than the moon,
but the fact the the moon is way closer makes a big impact on the earths surface tides.
Which two compounds are made during the light reactions and used to fuel the Calvin cycle?
ATP and NADP+
ATP and NADPH
ADP and NADPH
ADP and NADP+
Answer:
ATP and NADPH
Explanation:
The light dependent reactions harness energy from the sun the creat ATP and NADPH
Which of these is the source of the variation in wing color within the Peppered Moth population or in other words, how do they get their wing color?
A.natural selection
B.genetic variation
C.pollution
Answer: Genetic variation
Explanation: It could lead to natural selection, but natural selection isn't the cause. Many years down the road you could see a particular variation having a higher population, which is the result of natural selection/survival of the fittest via better camouflaging from predators.
How are ATP molecules used to power cell processes and what happens to ATP when it is used?
Answer:
Explanation:
ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation). This transfer is carried out by special enzymes that couple the release of energy from ATP to cellular activities that require energy
HOPE IT HELPED YOUWhich of the following is NOT a factor that affects wind?
Answer:
i think its friction or A
Explanation:
The wing of a bird and the front limb of a mammal have a similar number and arrangement of bones. Which evolutionary relationship explains these similarities? A. The wing and front limb are homologous structures; each evolved from a common ancestor. B. The wing and front limb are analogous structures; each evolved from a common ancestor. C. The wing and front limb are analogous structures; each evolved independently. D. The wing and front limb are vestigial structures; one evolved from the other.
Answer:
A
Explanation:
The correct answer would be that the wing and front limb are homologous structures; each evolved from a common ancestor.
Homologous structures are organs of different organisms that look similar in structure but perform different functions on their respective owners. They are as opposed to analogous organs which look different on different organisms but perform similar functions on them.
An example of the homologous organ is the wing of birds and the fore-limbs of mammals which are both built on a five-digit plant, also known as pentadactyl plan. While birds use their wings to fly, the fore-limbs of mammals are adapted for grasping or walking. An example of the analogous organ is the wing of birds and the wing of insects. They both look structurally different but are both for flying.
The correct option is A.
3. Which property of a star is closely related to its temperature? *
This state of matter has NO definite shape and NO definite volume
Group of answer choices
gas
solid
liquid
Answer:
Gas is the state of matter has NO definite shape and NO definite volume.
3 name that shows that climate has changed over time
Things like hurricanes and tornados get worse, flooding occours more often, the climate gets slightly warmer, sea levels rise, and warmer summer tempuratures.
Traits that are determined by more than one gene are called what?
The embryos of both mammals and reptiles are protected by amniotic fluid. What is this type of trait called? *
a. cladogram
b. outgroup
c. derived
d. molecular evidence
Answer:
c)derived
is the correct answer I think so
hope it is helpful
What similarities in the development lead scientists to infer that opossums ,chickens, salamanders,and fish share a common ancestor?
The gravity of the Sun and Moon pulls earth's surface in opposite directions:
Answer:
The Moon's gravity pulls more on the planet than the water on the opposite side. These two water bulges on opposite sides of the Earth aligned with the Moon are the high tides. Spring tides occur when the Earth, the Sun, and the Moon are aligned, increasing the gravitational pull on the oceans.
The direction of gravitational pull of the sun and Moon on the earth surface occurs in the same and opposite directions depending on the time of the day.
Hello your question its quite vague but a general answer is provided above
The gravity of the Sun pulls the Earth towards itself while the gravity of the moon on the earth is strongest at side facing the moon.
The direction of gravitational pull of the sun and Moon on the earth surface occurs in the same and opposite directions. and this depends on the time of the day. at night when the moon is in-between the earth and the sun the direction of the gravitational pull is strongest on the side of the earth facing the moon which is in the same direction with the gravitational pull of the sun towards the earth.
while during the day the direction of the gravitational pull of the moon on the earth is strongest on the side of the earth facing the moon which is in opposite direction to the gravitational pull of the sun on the earth.
Hence we can conclude that The direction of gravitational pull of the sun and Moon on the earth surface occurs in the same and opposite directions depending on the time of the day.
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A species of organism has survived in a mild environment for thousands for years. Suddenly, the climate changes and the area becomes a cold and barren tundra. Which of the following traits might help the species survive?
short neck to help keep heat inside the body
thick fur to keep the organism warm
small size so the organism requires less food
all of the above
Answer:
all of the above
Explanation:
These are all great rel world exaples of traits animals have in colder climates for the reasons listed.
Answer:
All of the above! :3
Explanation:
:3