What units would you use to measure a virus?
1.Nanometers
2.micrometers
3.millimeters
Answer:
(B Nanometers
Explanation:
Most viruses vary in diameter from 20 nanometres (nm; 0.0000008 inch) to 250–400 nm; the largest, however, measure about 500 nm in diameter and are about 700–1,000 nm in length. Only the largest and most complex viruses can be seen under the light microscope at the highest resolution.
PLSS HELP ME! Read each statement below and decide if you agree or disagree. Write Agree or Disagree below each statement, based on your decision.
1. Temperature is the measurement of how hot or cold something is.
2. When something heats up, new energy is created, and when something cools down, energy is destroyed.
3.When something heats up, it moves faster, and when something cools down, it moves slower.
4. Hotter things have more energy than colder things.
Answer:
1. Temperature is the measurement of how hot or cold something is.
agree
2. When something heats up, new energy is created, and when something cools down, energy is destroyed.
disagree
3.When something heats up, it moves faster, and when something cools down, it moves slower.
agree
4. Hotter things have more energy than colder things.
agree
Sara determined the kinetic energy (in joules) for each throw and recorded her results in the shaded rows below. however, she accidentally spilled some water on the lab book and cannot see the last number.
what is the value of the missing data point? explain how you got your answer
Answer: I would say the answer is 120J
Explanation:
Answer:
32 J
Explanation:
because if each of the sets in the table are constant then the unit rate both masses is 2 so i simply multiplied 16 by 2 to get 32
Yvette conducted an experiment investigating the effects of temperature on chemical reaction time. She dropped an Alka Seltzer tablet in water of different temperatures and measured the time it took for the reaction to complete. She hypothesized that the Alka Seltzer tablet would react faster in warmer water. The Effect of Temperature on Chemical Reaction Rate: Water Temperature (°C), Trial 1, Trial 2, Trial 3, Trial 4:
10°C , 44, 46, 43, 44
20°C, 37, 39, 37, 37
30°C, 29, 29, 27, 28
40°C, 19, 21, 20, 20
50°C, 11, 9, 10, 27
60°C, 4, 7, 5, 7
Was Yvette’s hypothesis correct? Explain your answer. A. Which reaction time is not consistent with the rest of the data table? B. What should its value be? C. What could have caused this inconsistency? Explain your answer. Please help this is for a grade and I don't understand. If you answer all the questions, I'll give you Brainliest.
Answer:
y=mx+b 8087 78=78
Explanation:
Answer:
read it and it will tell you
Explanation:
4) Finish the analogy related to atoms and matter:
atom is to element as_________________ is to compound
AND letter is to ____________________
Two internal sources of energy for Earth are
A.rotational energy.
B.solar energy
C.geothermal energy
Because a glass window is harder than a fingernail, a glass window
would have a higher number on the Mohs Hardness Scale.
would have a lower number on the Mohs Hardness Scale
would have the same number as a fingernail on the Mohs Hardness Scale.
science
Answer:
Because a glass window is harder than a fingernail, a glass window would have a higher number on Mohs hardness scale
Explanation:
Help me with this science
Answer:
1. Rain
2.frozen rain
3.clouds
4.when its at its freezing point which is 32 degrees Fahrenheit
5.a form of precipitation with little ice pellets
6.hail is formed when rain is carried up into cold part of the air
7.a thunderstorm
8.its basically just ice
9.It can cause bad dents in a car
10.he was a meteorologist and a photographer
Explanation:
A graph with horizontal axis time (seconds) and vertical axis position (meters). An orange line runs straight upward from 0 second zero meters. A concave blue line runs upward from the same point. Maia says that both lines on this position vs time graph show acceleration. Is she correct? Why or why not?
Answer:
Let's start by using the definition of acceleration. Acceleration is defined as the change in velocity over the change in time. In equation, that would be Δvelocity/Δtime. Based on the axes of the given graph, it shows the trend of position over time. So, the slope of the line and the curve shows the change of position over change of time, Δdistance/Δtime. In physics, this is the definition of speed or velocity. So, Maia is incorrect. Both curves show the speed or velocity of the object, and not acceleration. If the graph used a y-axis of velocity instead of position, then only at that instance, would be Maia be correct.
The difference between the two is, the straight line shows constant velocity while the curve line shows changing velocity.
Explanation:
Maria is incorrect because the line or curve shown in the graph gives value of velocity not of acceleration.
What is acceleration?Acceleration of any object is dfine as the rate of change in velocity with respect to the distance.
According to the question, graph is plotted between time and distance so slope of the graph gives the value of change in position with repect to the time and this is used to define velocity as:
v = dx/dt
So, maria is incorrect.
To know more about velocity, visit the below link:
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The state of matter in which particles are arranged in either a crystalline or an amorphous form is ,
Answer:
a solid in which state of matter are particles packed tightly together in fixed positions.
Explanation:
hope this helps
The state of matter in which particles are arranged in either a crystalline or an amorphous form is solid. In solid state, particles are closely packed with stronger intermolecular forces.
What are solids?There are three states for matter namely solids, liquid and gas. In solid state, particles are closely packed and have strong intermolecular force. In liquid state, particles have small space to move apart and they are free to flow.
In gaseous state particles are far apart with least intermolecular forces and they are free to move everywhere. There are are two types of solids namely crystalline and amorphous solids.
Crystalline solids have perfect ordered structure with definite composition and sharp edges. Amorphous solids have disordered structure with isotropic features.
Find more on crystalline solids:
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A student is pulling a large recycling bin. A teacher fills it with old papers to recycle. What property of the bin changes, and in what way? What does the student have to do to keep the bin moving at the same speed?
Answer:
the mass use his or her force to keep it at the same speed
Explanation:
PLEASE HELPPPP!!!!!!! (for science)
Nora notices water droplets on the grass in the morning. It did not rain during the night. Which statement is true about this change of state?
1. Mass was added to the water particles, resulting in a deposition.
2. Energy was added to the water particles, resulting in evaporation.
3. Mass was removed from the water particles, resulting in sublimation.
4. Energy was removed from the water particles, resulting in condensation.
Answer:
4
Explanation:
because morning dew is condensation
(BrainPop Will give brainliest)
Based on the information from the movie, what can you conclude about the most common chemical compound on earth?
A) It's oxygen incorrect answer
B) It's hydrogen gas incorrect answer
C) It's carbon dioxide incorrect answer
D) It's water
Answer: What movie? The one where i ate chicken. (I eat chicken at all times)
Explanation: Its oxygen anyway
Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Oxygen is the most common chemical compound on earth. The correct option is option A.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.
Oxygen and water are the most abundant on earth. Carbon dioxide and hydrogen gas are the rarest. Out of Oxygen and water, oxygen is the most abundant gas on the earth. Carbon dioxide are mostly released on combustion. two third of earth surface is covered by water.
Therefore, oxygen is the most common chemical compound on earth. The correct option is option A.
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Students are asked to correctly identify the reactants and products of this chemical reaction. Which of the following explanations is correct? A. Sam says that nitrous acid and nitric acid are the reactants; water and nitrogen dioxide are the products. B. George says that nitrogen dioxide and water are the reactants; nitrous acid and nitric acid are the products. C. Jan says that nitrogen, hydrogen and water are the reactants; oxygen and acid are the products. D. Erin says that nitrogen dioxide and water are the reactants; nitrogen is the product.
Answer:b
Explanation:
He is correct
Answer:
B. George says that nitrogen dioxide and water are the reactants; nitrous acid and nitric acid are the products.
A leaf on a tree stars moving when the wind blows on it how is this an example of newton's first
A. the wind exerts a force on the leaf causing its motion to change
B the wind exerts no net force on the leaf because it is not a push or pulls
C. the leaf stops moving even though the wind continues to blow
A crest is created when the genes that work to produce feather growth around the neck cause
A.the normal feathers to fail to grow creating a blank area that fails in with downy feathers.
B.the feathers to twist as they grow creating the fluffy crest.
C.the feathers to grow under the skin producing a lumpy ridge called a crest.
D.the feathers to grow backwards pushing upward instead of smoothly lying down.
PLEASE HELP ME!!!!!!!!
Answereather diversity is striking in many aspects. Although the development of feather has been studied for decades, genetic and genomic studies of feather diversity have begun only recently. Many questions remain to be answered by multidisciplinary approaches. In this review, we discuss three levels of feather diversity: Feather morphotypes, intraspecific variations, and interspecific variations. We summarize recent studies of feather evolution in terms of genetics, genomics, and developmental biology and provide perspectives for future research. Specifically, this review includes the following topics: 1) Diversity of feather morphotype; 2) feather diversity among different breeds of domesticated birds, including variations in pigmentation pattern, in feather length or regional identity, in feather orientation, in feather distribution, and in feather structure; and 3) diversity of feathers among avian species, including plumage color and morph differences between species and the regulatory differences in downy feather development between altricial and precocial birds. Finally, we discussed future research directions.
Keywords: feather, skin appendage, genetics, genomics, development, evolution
Go to:
Explanation:
Please help!
1.Ionic compounds are formed when.
-metal reacts with non metal
-metal reacts with metal
-when non-metal reacts with non-metal
2.True or false. Ionic bonds are electrostatic forces.
-True
-False
3.Sodium loses one electron when it reacts with.
-Magnesium
-potassium
-Chlorine
Animals respond to threats in their environment by attacking or escaping. Either response is the result, mostly, of interactions between -
Answer:
escaping
Explanation:
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?(1 point)
The manual is a gene.
The manual is a chromosome.
Each set of instructions is a protein.
Each structure is a gene.
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?(1 point)
The manual is a gene.
The manual is a chromosome.
Each set of instructions is a protein.
Each structure is a gene.
Answer:
Explanation:The manual is a chromosome.
If the given scenario is used as a model for genetic information, then "the manual is a chromosome" is the correct statement. Therefore, option (B) is correct.
What is a chromosome?A chromosome can be defined as a long nucleotide sequence that consists of linear arrangements of genes. In a chromosome, each DNA strand comprises a nucleotide sequence that can encode proteins that are different genes.
The human body has 23 pairs of chromosomes and this unique structure of the chromosome does DNA tightly packed with histone proteins to fit in the cell and helps in giving stability to it. The unwound DNA of a single cell measures 6 feet, with this we can understand the need for packaging in the nucleus of each cell.
Chromosomes can be seen in cell division as they ensure that DNA will be divided between the daughter cells in the cell division. Even a little irregularity in the process can cause many deformities and diseases.
A chromosome can be considered as manual containing instructions for how to build various types of structures using a set of interlocking bricks means nucleotides.
Learn more about chromosomes, here:
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all minerals on the mohs hardness scale are hard enough to scratch a piece of glass is it true or false
PLEASE I NEED HELP
science
Which of these minerals would most likely be valued as a gem and used in jewelry?
olivine, a green or gray mineral with a hardness rating of 6.5
gypsum, a pink or white mineral with a hardness rating of 2
galena, a metallic silver mineral with a hardness rating of 2.5
science
Answer:
b? I hope this helps! Let me know :)
Explanation:
A latex balloon will adjust to maintain the same pressure. If the balloon is filled with 19.4 L of helium initially at 25.2 degrees Celcius, what would the volume be if the temperature adjusted to 5.4 degrees Celcius?
Answer:
V₂ =18.11 L
Explanation:
Given data:
Initial volume = 19.4 L
Initial temperature = 25.2°C (25.2+273 =298.2 K)
Final volume = ?
Final temperature = 5.4°C ( 5.4+273 =278.4K)
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 19.4 L × 278.4 K / 298.2 k
V₂ = 5400.96 L.K / 298.2 K
V₂ =18.11 L
hi, I'm lyo, a brazilian chemistry teacher ...
step by step :
The exercise can be solved using Charles' Law, which says: "that the amount of a gas in its volume provides the maximum number of moles in the pressure acquired"
The volume (mathematically speaking), is the amount of space occupies some type of body, in exercise it asks for the volume of the temperature adjusted to 5.4 ° C, so we have to:
V₁ / T₁ = V₂ / T₂ → the initial volume divided by the initial temperature, is equal to the final volume raised to (2), divided by the final temperature raised to (2) ...
Agora calculamos:
[tex]V_{2} = \frac{ V_{1}T_{2}}{T_{1} } \\V_{2} = \frac{19,4 L * 278,4\; K }{298,2\; k} \\V_{2} = \frac{5400,96\; L\:K}{ 298,2\: K}\\ V_{2} = 18\: L[/tex]
the volume will then be 18 liters
[tex]BRAINLY\; WE\; STUDY \;TOGETHER[/tex]
How will the concentration of H+ and OH− ions change when a substance with a pH 11.4 is added to water?
A) Both H+ and OH− will increase
B) Both H+ and OH− will decrease
C) H+ will increase and OH− will decrease
D) H+ will decrease and OH− will increase
Answer:
option d is the answer
hope it helps
Answer:
The answer would be D.
:D
The force of gravity on Planet Y is 5.3 m/s2. The force of gravity on Planet Z is 6.2 m/s2. A 10 kg object would: weigh more on Planet Y than on Planet Z weigh less on Planet Y than on Planet Z weigh the same on Planet Y as on Planet Z
Answer:
every thing would weigh less on planet y because weight = m(mass)g(gravity) and planet y is 5.3x10=53 and planet z is 6.2x10=62. 62 is greater than 53 so everything on planet y would weigh less than everything on planet z so the answer is b
Explanation:
What is it called when a girl is romantically and sexually attracted to women but find men attractive?
(what is the name of the sexuality?)
Answer:
i think is biromantic, homosexual woman is romantically attracted to people of multiple genders, but is only sexually attracted to women. A biromantic, homosexual man is romantically attracted to people of multiple genders, but is only sexually attracted to men.
Explanation:
i hope this help :/
Answer:
bisexual, or leaning towards fully homosexual
Explanation:
if a girl has zero romantic nor sexual attraction toward men, then that would be phrased as homosexual. but if there is some sort of attraction at all, i i️ would consider that as bisexual. whatever term you feel most comfortable using, you should be confident in!! you are valid, hope this helps :)
One type of bacteria reproduces once every 60 minutes. If there are 2 bacterial cells to begin with, then after 4 hours there will be a total of _____ bacterial cells.
Answer:
96
Explanation:
Which two statements best describe how oceans affect climate?
A.They have warm and cool currents that affect weather on nearby land.
B.They have warm and cool currents that move the air masses above them.
C.They make temperatures in nearby areas slightly colder than freezing
D.They make temperatures in nearby areas slightly milder.
Please help asap
The effects of climate on ocean are:
A.They have warm and cool currents that affect weather on nearby land.
D.They make temperatures in nearby areas slightly milder.
Climate type of the ocean:As ozone harming substances trap additional energy from the sun, the seas are retaining more hotness, bringing about an expansion in ocean surface temperatures and climbing ocean level. Changes in sea temperatures and flows achieved by environmental change will prompt modifications in environment designs all over the planet.
Thus, options A and D are correct.
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Ancient plants captured solar energy from the sun, which eventually produced
A.geothermal energy
B.fossil fuels
C.greenhouse gases
D.infrared radiation
Answer:I think it’s B. Fossil Fuels
Explanation:
Make an observation about the average height of the beanbag. How does it compare with your calculated kinetic energies for each speed? Does the height of the beanbag increase in equal increments with each step up in speed? Record these qualitative observations in Table B.
Answer: The kinetic energy in the solid and liquid phases is the same. The kinetic energy of the substance's particles will depend on the volume of the substance. The particles have less kinetic energy in the liquid phase than they do in the gas phase. They vibrate so quickly that the particles ionize and become plasma.
Can someone help me like please
Answer:
the last one
Explanation:
one atom had a higher electronegativity than the atom it is sharing with.