Answer: sound travels fastest only through solids.
How might the distance between the needle and the water droplets have affected the movement of the droplets?
(8th Grade Science) Please help
Answer:
The behavior of droplets trapped in geometric structures is essential to droplet manipulation applications such as for droplet transport. Here we show that directional droplet movement can be realized by a V-shaped groove with the movement direction controlled by adjusting the surface wettability of the groove inner wall and the cross sectional angle of the groove. Experiments and analyses show that a droplet in a superhydrophobic groove translates from the immersed state to the suspended state as the cross sectional angle of the groove decreases and the suspended droplet departs from the groove bottom as the droplet volume increases. We also demonstrate that this simple grooved structure can be used to separate a water-oil mixture and generate droplets with the desired sizes. The structural effect actuated droplet movements provide a controllable droplet transport method which can be used in a wide range of droplet manipulation applications.
Explanation:
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What important event takes place during the interphase of the cell cycle?
A.
the sister chromatids are pulled away to opposite ends of the cell
B.
the sister chromatids line up along the middle of the cell
C.
the DNA is duplicated (makes a copy of itself)
Which of the following statements are TRUE for the process of dissolving NaCl in water?
a. NaCl remains bonded together.
b. Na+ and Cl- become free ions.
c. The attractive forces between water and NaCl are weaker than the forces holding NaCl together,
d. All of the above
How many total atoms in the chemical formula CaCO2?
A.2
B.3
C.4
D.5
E.6
Explanation:
Calcium carbonate is a molecule that contains one atom of calcium, one atom of carbon, and three atoms of oxygen.
which proporty of potentiol energy distinguishes it from kenetic energy
Answer:
Shape and Position
Explanation:
Potential energy is defined as the stored energy in an object due of its position or its configuration; whereas the kinetic energy is defined as energy which a body can possesses because of its motion.
Answer:
Explanation:
The property that distinguishes the potential energy from kinetic energy are the shape and position of the object, letter B. Potential energy is directly proportional with mass times gravity times the height of the object at rest.
What is the displacement of an airplane that takes off and ascends 10,000 feet in the air but, to avoid turbulence, descends down 2,000 feet?
A. 8,000 feet total
B. 8,000 feet up
C. 18,000 feet total
D. 18,000 feet up
PLEASE HELP FAST!!!! ITEM BANK: Move to Bottom
2N
N
chromosome number
chromosome number in body cells
chromosome number in gametes
produced by fertilization
product of meiosis
Haploid
Both
Diploid
drag and drop answer here
drag and drop answer here
drag and drop answer here
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40 1/28/2021
Answer:
WHat ?????
Explanation:
ITEM BANK: Move to Bottom
2N
N
chromosome number
chromosome number in body cells
chromosome number in gametes
produced by fertilization
product of meiosis
Haploid
Both
Diploid
drag and drop answer here
drag and drop answer here
drag and drop answer here
10:20 AM
ere to search
o
40 1/28/2021
Answer:This is to you! you are a brilliant and sweet person. you are loved by many. if you send this out to 15 people in the next hour you will have the best of luck for a year. if you send it to 30 people in the next year than your crush will ask you out soon. Don't break the chain or you will have 7 years of bad luck. go! A: Love B:Because your bored C: Sad D:Mad Don't judge people for their beliefs. I'm watching... Thank you for listening. Take care, and NEVER GIVE UP!
Explanation:
7th grade science!! Help ASAP!!
Answer:
Bladder: A temporary storage place for urine
Ureter: Tube that carries urine from the kidneys from the bladder
Nephron: functional unit of the kidney.
Urethra: Exit way for urine out of the body.
Kidney: filters waste from the blood.
I hope this helps! Have an amazing day!
Alika finds a certain kind of butterfly near her house. She reads that ultraviolet light is absorbed by the butterfly’s wings, red light is transmitted through the butterfly’s wings, and green light is reflected off the butterfly’s wings. Alika’s friend Claire tells her that if you shine a light on the butterfly, its wings will glow.
Can light cause the butterfly’s wings to glow? Why or why not? Does it matter what type of light Alika shines on the butterfly?
No, light can't cause the butterfly's wing's to glow. Explanation: Butterflies contain wings which are of different colors for attractiveness and also to show warning alarm for it's predator.
Answer:
Hello! I hope this answer can help future amplify goers. I know it is not perfect, but you can definitetly base your answer off of mine if you like. If you need some encouragement for finishing, you got this!!!! I know these are annoying and sometimes tough, but you can do it! you'll get through this just fine :) now for the actual answer:
Yes, light can cause the butterfly's wings to glow. This is because the UV light is absorbed by the butterfly's wings, and when the light gets absorbed, it gives the wings energy. The increase in energy will cause the butterfly wings to change color. Not all light will make the wings glow, however. Only UV light will do the trick. This is because as the text says, the green light is reflected off the butterfly's wings, which means it will not gain any energy from visible light. In conclusion, light can cause the butterfly's wings to glow, since UV light is absorbed by the wings, meaning it gets energy. It matters what type of light is shone on the wings since visible light is reflected, while UV light will absorb.
I really hope that helps you! if you have any questions you can ask me about it in a comment
bye bye have a wonderful day and know that i am so proud of you <3
Question 1 (2 points)
What state of matter is achieved if a large amount of energy is added to a gas? (2 points)
a
Vapor
b
Liquid
c
Plasma
d
Solid
Question 2 (2 points)
What happens to a gas when its temperature decreases? (2 points)
a
The gas becomes a plasma.
b
The molecules move more slowly.
c
The energy of the particles increases.
d
The atoms in the gas are destroyed.
Question 3 (2 points)
Mary and Ron are discussing what happens to the kinetic energy of molecules in a liquid as the liquid cools. Mary says it decreases. Ron says it stays the same. Who is correct and why? (2 points)
a
Mary is correct, because molecules are constantly losing kinetic energy no matter what state they are in.
b
Mary is correct, because as the liquid cools, the molecules slow down as they lose kinetic energy.
c
Ron is correct, because kinetic energy is a fixed characteristic of molecules and does not change.
d
Ron is correct, because kinetic energy can only increase, not decrease.
Question 4 (2 points)
Which quantity is directly related to the temperature of a substance? (2 points)
a
Average kinetic energy of the particles in the substance
b
Average size of the particles in the substance
c
Composition of the substance
d
pH of the substance
Question 5 (2 points)
As heat is added to a tube of gas, which is the most likely phase transition to occur in the tube? (2 points)
a
Gas to plasma
b
Gas to liquid
c
Gas to solid
d
Gas to element
Question 6 (2 points)
How do elements change as you move down a column in the periodic table? (2 points)
a
The atomic radius decreases.
b
The number of protons decreases.
c
The atomic mass decreases.
d
The electronegativity decreases.
Question 7 (2 points)
How are chemical and physical changes different on a molecular level? (2 points)
a
Chemical changes involve the breaking of bonds in molecules.
b
Chemical changes do not affect bonding between atoms.
c
Physical changes do not involve molecules.
d
Physical changes cause new molecules to form.
Question 8 (2 points)
How does the currently accepted model of the nucleus provide evidence of the existence of the strong nuclear force? (2 points)
a
The protons have like charges and should repel, so to stay near each other in the nucleus, there is a strong force holding them together.
b
The electrons have like charges and should repel each other, which is why they are scattered in the electron cloud.
c
The protons and neutrons have opposite charges and should attract each other, so to keep them apart, there must be a strong force in the nucleus.
d
The particles in the nucleus are separated by type, showing the existence of a strong force that keeps them apart.
Question 9 (2 points)
How do scientific models become stronger over time? (2 points)
a
New experiments verify or refine previous models.
b
As more people believe the model, it is stronger.
c
Older theories are always thought to be stronger than new theories.
d
Personal beliefs become more important to scientists over time.
Question 10 (2 points)
When scientists publish experimental results, their results are often criticized by other scientists. How is this process a source of strength of science? (2 points)
a
It encourages scientists to give convincing evidence for their results.
b
It allows scientists to keep their data secret.
c
A scientific model is not useful unless everyone thinks it is true.
d
It forces scientists to publish results that are in line with current theories.
