Answer:
subduction
Explanation:
Subduction is a geological process in which the oceanic lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the mantle.
If a 3.0 picogram (pg) sample of curium-245 has a half-life of 8500 years, which conclusion can be drawn?
A: The curium-245 sample must have an age of at least 8500 years.
B: The curium-245 sample must have an age of less than 8500 years.
C: The curium-245 sample will have a mass of about 6.0 pg after 8500 years.
D: The curium-245 sample will have a mass of about 1.5 pg after 8500 years.
Answer:
its A
Explanation:
If a 3.0 (pg) sample of curium-245 has a half-life of 8500 years, then the conclusion which can be drawn is the curium-245 sample will have a mass of about 1.5 pg after 8500 years
What is half life time?Half life time is that time after which initial concentration of reactant becomes half of the initial.
Given that initial concentration of curium-245 = 3pg
After half life time concentration of curium-245 = 1.5pg
The curium-245 sample must have an age of at least 8500 years is wrong as given time is the half life time.The curium-245 sample must have an age of less than 8500 years is wrong as given time is the half life time.The curium-245 sample will have a mass of about 6.0 pg after 8500 years is alo wrong as left sample shold be half of the initial.Hence, the curium-245 sample will have a mass of about 1.5 pg after 8500 years is the conclusion.
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Only do the ones with the stars :)
Answer:
Cell Membrane Function: The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Description:The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Nucleus Function:The nucleus has very important roles to play. As it contains genetic material, it coordinates cell activities like protein synthesis and cell division. Anatomically the nucleus is made up of several components: nuclear envelope, nuclear lamina, nucleolus, chromosomes, nucleoplasm are some of these components.
Description: The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
Explanation:
Answer:
The cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid
A nucleus is a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.
A. Position 2
B. Position 1
C. Position 3
D. Position 4
Answer:
its a bouncey ball
Explanation:
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation? Explain why.
the two columns on a data table represent the _________ variable and ________ variable
Explanation:
Independent variable and dependent variable
i really need help!! im struggling with my science notes.
what is the fomula to find force?
what is the formula to find mass?
what is the formula to find acceleration?
please help these are due really soon!!
Answer:
formula for force : F=m times a
formula for mass: density times volume
formula for acceleration: change in velocity over the change in time
Explanation:
Answer:
It is summarized by the equation: Force (N) = mass (kg) × acceleration (m/s²)
Explanation:
Which body changes occur after an individual has become an adult?
metamorphosis
lifespan
puberty
aging
During puberty, an individual undergoes significant body changes and becomes capable of sexual reproduction. Once an individual has completed puberty, they are considered an adult and the body continues to undergo changes related to aging. Metamorphosis is a dramatic physical transformation that occurs in some animals, not humans. The lifespan of an individual is the duration of time between their birth and their death.
Answer: D. Aging
Explanation: Becuase after the adult cycle you become older say as a male you will become a grandpa.
are a visual representation of data to show the reader the results of an experiment. Question 3 options:
Data tables
Graphs
Please, Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:1 chemical reactions, 2 properties,3 substances, 4light, 5 color, 6 precipitate, 7 gas, 8 temperature
Explanation: I think this is it I did this a week ago and that’s what I remember
Answer:
1 chemical reactions, 2 properties,3 substances, 4light, 5 color, 6 precipitate, 7 gas, 8 temperature
Explanation:
this a easy sciences
What do you think is happening at the nanoscale that keeps the salad dressing with an emulsifier mixed?
Answer:
✨ science ✨ and ✨ big brain stuff ✨
Explanation:
sorry
Chlorine and Oxygen
Formula:
Name:
Bond:
What is it:
Which of the following best describes a magnetic field?
A.a measure of the length of a magnet
B.the force that pushes two magnets away from each other
C.an invisible region that surrounds the north pole of a magnet
D.a region around a magnet in which you can measure magnetic forces
Answer:
D
Explanation:
GIVING BRAINLIEST FIVE STARS AND HEART!
In your own words explain the difference between potential energy and kinetic energy. Give an example of how one can be transformed into the other.
Explanation:
When an object is at rest, the body is said to possess potential energy. In another case, when the object is in motion, then it is said to possess kinetic energy. Potential energy tends to affect the object within the environment if and only when it gets transformed to other kinds of energy.
which beaker has the least thermal energy?
please don't guess, i already got 1 question wrong, i dont want a 60 on this.
Answer:
It's B. beaker A
Explanation:
The thermal energy is directly proportional to to the mass of the solution times the temperature difference
In other words more mass and temperature means more thermal energy
So less mass (or mL of solution in our case) and less temperature means less energy
This means we choose the beaker A
Hope this helps have a good day
PLS HELP THIS IS ACTUALLY SCIENCE BUT PLS HELP
What is the greenhouse effect?
Answer:
the greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. ... The absorbed energy warms the atmosphere and the surface of the Earth.
Science
Seafloor spreading occurs along certain boundaries in the ocean. Which are most likely to form at the boundary where the seafloor is spreading?
Select one:
strike-slip faults
subduction zones
continental shelves
mid-ocean ridges
Answer:
subduction zones
Explanation:
it more near the bottom
Mid-ocean ridges are most likely to create at the boundary where the seafloor is spreading. Therefore, option D is correct.
What is a mid-ocean ridge?A mid-ocean ridge can be defined as a seafloor mountain system generated by plate tectonics. Mid-ocean ridge has a depth of about 2600 m and rises about 2000 m above the deepest portion of an ocean basin. Seafloor spreading happens along a divergent plate boundary.
The rate of seafloor spreading evaluated the morphology of the crest and width in an ocean basin. The formation of new seafloor can occur from the mantle in response to plate separation.
Mid-ocean ridges can be connected through plate tectonic boundaries and the trace of the ridges across the seafloor appears to be the seam of a baseball. The mid-ocean ridge system can be described as the longest mountain range on the surface of the Earth, reaching about 65,000 km.
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Which diagram represents an electrically neutral atom?
Answer:
D
Explanation:
I hope this right, I'm sorry if it's not.
For an atom to be neutral, it has to have the same amount of protons and electrons. Because protons and electrons have opposite charges, when there is an equal amount of them they balance each other out
The diagram that represents an electrically neutral atom is:
Option D
What is an electrically neutral atom?Whenever a molecule has an equivalent number of electrons and protons, it has an equivalent number of -ve electric charges (the electrons) and +ve electric charges (the protons). The all-out electric charge of the 0 is thusly zero and the particle is supposed to be unbiased.
Thus, option D is correct.
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What information must a person have if they are asked to determine an object's speed
Answer:
Distance the object went and the time it took to go that distance (distance, time)
Explanation:
The word igneous comes from the Latin word for fire. However, the name is inaccurate. The rocks are not created with flames. Instead, they are created when magma cools and hardens. Magma is hot molten rock found deep in the earth. Igneous rock is either intrusive or extrusive. It is intrusive when it forms inside the earth's crust. It is extrusive when it is formed above the earth's surface.
Select the sentence from the passage that supports the idea that temperature is an important factor in the formation of igneous rock.
Question 10 options:
Instead, they are created when magma cools and hardens.
The word igneous comes from the Latin word for fire.
Magma is hot molten rock found deep in the earth.
It is intrusive when it forms inside the earth's crust.
Answer:
Instead, they are created when magma cools and hardens —> the temperature contributes as the magma would be at extreme heat while it need a cooler temperature to harden and mold
Explanation:
1. What are genetically modified foods?
2. What crops are typically genetically modified?
3. Why are crops genetically modified?
4. How are crops genetically modified?
5. How do genetically modified foods affect society and the environment?
Answer:
1. Foods that have changes that are chemically introduced.
2. corn soybeans apples ect
3. sot hey last longer or look better
4. new dna is placed in them and there seeds
5. they are not as good for humans
Explanation:
Answer:
1. Foods that have changes that are chemically introduced.
2. corn soybeans apples ect
3. sot hey last longer or look better
4. new dna is placed in them and there seeds
5. they are not as good for humans
Explanation:
Think about "The Law of Conservation of Mass" (In a chemical change, the total mass of the new substances is always the same as the total mass of the original substances.) Why might it be difficult to demonstrate this law in chemical changes where one or more of the products is a gas?
Answer:
The Law of Conservation of Mass states matter cannot be created/destroyed in a chemical reaction
It is hard to prove the law because the gas molecules move out the area quickly, at a higher speed than liquid or solid particles.
If their appears to be a loss in mass, it is because of the above, and that is why it may be difficult to demonstrate this 'law'.
WILL GIVE BRAINLIEST! A student made two lists of advantages and disadvantages: one list for using fossil fuels as energy resources and a second list for using wind and solar energy. Put a checkmark or circle all entries that do not fit accurately into the lists.
Hint: there are 6
Answer: I am not sure but I think its fossil fuel - filling oil and mining coal cause few environmental problems,not dependent on weather condition, not chemical hazard or flammable hazard. Wind and solar - inexpensive, increase carbon footprint and easily stored and transported
Explanation:
I am not quite sure for two of them
Which animal can leave its eggs to hatch and does not need to take care of the infants?
sea turtles
ducks
penguins
platypus
Answer these for me please
Answer:
13- a i think
Explanation:
Golden jackals who are no longer in a pack will trail a tiger so they can feed on what the tiger kills. What type of symbiotic relationship is this?
Answer:
Commensalism
Explanation:
Commensalism Is where one animal has the benift while the other is unharmed, in your question the tiger gets nothing out of the jackal following it but the Jakel gets a free meal. Hope this helped
What is the density of an object with a mass of 500 grams and a volume of 20 cm3?
D = mass/ volume
SCI QUESTION
HELP ASAPPPPPPPP!!!!!!!
Answer: oh thats 22cm
Explanation:
Answer:
168.56
Explanation:
I hope this is right if it's not then i am really sry.
1. What role do you think popular belief has on scientific discoveries?
2. Is there a scientific discovery in today’s world that has been overshadowed by popular belief? Explain.
Please help if you do the food chain has to have the gray wolf in it
Answer:
grass->bug->mice->wolf
Explanation:
Food undergoes both physical and chemical changes during digestion. Which of the parts of the digestive process listed below is a physical change that takes place in the mouth?
enzymes break down starch into simple sugars
chewing breaks food into smaller pieces.
HELP!
Answer:
1) chewing breaks food into smaller pieces.
Explanation:
Chewing food changes the PHYSICAL appearance. The sugars in the other possible answer will completely change the composition of the food. So therefore, chewing breaks food into smaller pieces, is correct.
Help me, I don't understand :(
Answer:
Hi! I think it would be B. (Balloon energy is negative, wall energy is positive.)
Explanation:
{Hope this helps} <3
-Addi
