Answer:The crust
Explanation:
2. Heat is:
A. thermal energy
I B. infrared radiation
C kinetic energy
D. molecular movement.
An airplane flies 2100 miles in 3hours. What is it’s average speed in miles per hour?
Answer:
700 miles per hour
Explanation:
[tex]average \: speed \\ = \frac{distance}{time} \\ = \frac{2100}{3} \\ = 700 \: miles \: per \: hour[/tex]
A hydrogen electron is elevated from level 1 to level 2. Another electron is elevated from level 2 to level
4. The transition requiring the greatest energy change is
Answer: level 2 to level 4
Explanation:
Answer:
Level 2 to Level 4
Explanation:
Edge 2021
Describe, in terms of particle arrangement, why the substance with the smallest density and the substance with the largest density has different densities.
Explanation:
Density of a substance may be defined as the amount of mass or matter it contains in a unit space or volume of that substance. It is the quantity of the matter that a body possess or contains.
Mathematically,
density = mass / volume
Different substance shave different densities. The arrangement of molecules or atom particles in the substances makes a substance less denser or more denser than the other substance.
In liquid or gas, the molecules are loosely bound to each other and there are more empty space or void spaces in the substance. Thus this make liquid and gas less dense.
On the other hand, the molecules in solid are tightly bound and they are packed, with no or very less empty space. Therefore, solids have the largest density than the gases which have the smallest density.
Which are different forms of an element that have different numbers of neutrons?
O ions
O isotopes
O compounds
O molecules
I need help pleaseeee
Did dalton’s atom have any protons, neutrons, and electrons?
Answer:
no
Explanation:
No, dalton’s atom haven't any protons, neutrons, and electrons because they were not discovered until later.
Answer:
No
Explanation:
no, because according to him an atom is a tiny indestructible sphere with mass on it. In his theory, Dolton did not know about Protons, neutrons and electrons.
A wave has a length of 8 meters and a speed of 32 meters per second. What is the frequency of the wave?
Answer:
f=vλ where: f is the frequency of the wave in hertz. v is the velocity of the wave in meters per second. λ is the wavelength of the wave in meters
f= 32*8 = 256 hertz
Explanation:
Which is one source from which metamorphic rocks form?
soil particles
igneous rock
molten material
sand particles
Answer:
Option B:igneous rock
Explanation:
Metamorphic rocks are formed as a result of heat and pressure transforming the original or parent rock completely into a new rock. Now this original or parent rock can either be sedimentary, igneous, or another metamorphic rock.
Thus, looking at the options, the only source of metamorphic rocks is from igneous rocks.
Answer:
B
Explanation:
Took the test
______ is a way to slow down the reactions that spoil milk
Answer:
b. keeping milk cold
Explanation:
The cool temperature in the fridge will stop it from going to any further reactions so it won't get spoilt
d. Keeping milk warm can help in slowing down of the reaction that can spoil milk.
Pasteurization can be defined as the heat treatment process in which the heat is provided to a liquid for example milk to prevent the growth of microbes which are least resistant to the heat. This process destroy the microbes, their spores, and also prevent their colonization.This process is useful in preventing soreness of milk and extends its shelf life. Keeping milk in cold container, in a cold temperature, or away from other sources of food will not help in slowing down the reactions that spoil milk.Hence, d. Keeping milk warm can help in slowing down of the reaction that can spoil milk.
Learn more about milk:
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HELP!
Mrs. Grogan wants to know if she is packing the same amount of animal crackers for her son’s snack each day.
She fills up a sandwich bag full of animal crackers each day. Mrs. Grogan takes the mass of the animal crackers and discovers that she uses 23.4 g, 25.2 g, 24.3g, 24.4 g, and 24.8 g of animal crackers for each day during the week. Convert the average mass into kilograms and record your answser to the correct number of significant figures. NO UNITS!
A kilometer is much greater in distance then a millimeter true or false
Answer:
true
Explanation:
Answer:
true
because if you look at a chart it will lable
kilometercentimetermillimeterand so onCalculate the volume of a sample of iron that has a density of 6.8 g/mL and a mass of 6780 mg.
Answer:
m= 6780mg = 6.78g = 6.8g
d= 6.8g/ml
V= m/d
V= 1ml
I need help with problems 11-13 please. I’m very confused on how to find Volume when there’s no specific shapes and numbers.
Answer:
To find volume you can either look at the displacement of the water or Length•Width•Height
Explanation:
11) 12
12) 340 mL
13) 196 m\
Which of the following is the most accurate definition of a civilization?
humans being able to communicate with each other.
humans being able to travel to other regions
the stage of humans being able to find food
the stage of human social and cultural development
Answer:
The stage of human social and cultural development.
Explanation:
Answer:
The stage of human social and cultural development.
on:
true or false : when a theory has been known for a long time , it becomes a law
False.
It won’t become one if it’s not proven true.
What SI units are used for measuring the following quantities? For derived units, express your answers in terms of the six fundamental units. please help :(
volume, density, and energy
Answer:
volume it's SI unit is cubic centimeters or cubic meters
density grams per cubic centimeters
Which most accurately describes the basis of the scientific method?
A. a path of clearly defined steps that must be followed in a particular order.
B. a possible answer to a scientific question based on knowledge or research.
C. the recipe for how to conduct an experiment that must be followed precisely.
D. the process of hypothesis and testing through which scientific inquiry occurs.
The answer is D: process of hypothesis and testing through which scientists inquiry occurs
Answer:
d edge 2020
Explanation:
How do electrons behave?
What is density????????????????
Answer:
Density is the mass per unit volume
Explanation:
Density is defined as mass divided by volume: where "p" is the density, "m" is the mass, and "V" is the volume.
Molding a shape from soft, malleable material (clay or plaster) or constructing a shape from harder material (such as metal or paper). Molding is what a child does with Play-Doh or origami.
Complete question is;
Molding a shape from soft, malleable material (clay or plaster) or constructing a shape from harder material (such as metal or paper) is called what?
Molding is what a child does with Play-Doh or origami
Answer:
Modeling
Explanation:
In chemistry, we have a branch called modeling chemistry. In modeling, we organize together a series of models instead of a collection of topics. In this approach, we will begin with a phenomena that can be readily observed and are gradually develop the simplest model of matter that helps us make sense of our observations.
Now in the question, we are Molding a shape from soft, malleable materials like clay/plaster or constructing from harder materials like metal/paper. This means that we are organizing a series of models from either soft & malleable or harder materials to produce a simple model shape.
Thus, this is simply modeling.
Identify how many significant figures each number has. a. 297 b. 549 c. 4678 d. 327 e. 3006 f. 902 g. 8020 h. 0.0000053 1. 0.00002 j. 0.000506 k. 4000 1. 4000.0 m. 7.12 n. 3.05
Explanation:
a. 3 significant figures
b. 3
c. 4
d. 3
e. 4
f. 3
g. 3
h. 2
i. 1
j. 3
k. 1
l. 6
m. 3
n. 3
A hot air balloon is an example of what type of system? *
Answer:
The balloon transport system or Hot Air Balloon is one of several transportation methods in RuneScape. During the Enlightened Journey quest it can be used for travel between two locations. After the quest is complete, four more locations are available to be unlocked by completing respective journeys to those locations.
Explanation:
transportation
What makes one atom different from another? The number of______in the_____
Answer:
protons in the nucleus
how do I solve for V1 in this equation
Answer:
[tex]V_{1} = \frac{P_{2}V_{2}T_{1}}{P_{1}T_{2}}[/tex]Explanation:
[tex]\frac{P_{1} V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]
First of all cross multiply
That's
[tex]P_{1}V_{1}T_{2} = P_{2}V_{2}T_{1}[/tex]
Next divide both sides by [tex]P_{1}T_{2}[/tex] in order to isolate [tex]V_{1}[/tex]
We have
[tex]\frac{P_{1}V_{1}T_{2}}{P_{1}T_{2}} = \frac{P_{2}V_{2}T_{1}}{P_{1}T_{2}}[/tex]
We have the final answer as
[tex]V_{1} = \frac{P_{2}V_{2}T_{1}}{P_{1}T_{2}}[/tex]
Hope this helps you
Carmen has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured. Which is the best conclusion about Carmen's sample?
Answer:
liquid
Explanation:
In the given context, the sample as collected by Carmen is clear and the sample has a sour smell. It is also mentioned that the sample is thick sample and when the sample is poured on a surface it begins to flow.
Such a sample would be a liquid sample because anything that flows is a liquid. The liquid sample has a high viscosity since it is thick.
Answer:liquid
Explanation:
Because it flows
Density = mass/volume or Dam/v
calculate the density of a cube that measures 1.25 centimeter on a side
and has a mass of 43.0 grams.
Answer:
A brick of salt measuring 10.0 cm x 10.0 cm x 2.00 cm has a mass of 433 g. What is its density? Step 1: Calculate the volume. V = lwh = 10.0 ...
Missing: Dam/ 43.0
Round the the number below to the following places:
1254.6027
Rounded to the nearest... Correctly Rounded Number (Answer)
1000 place
100 place
10 place
1 place
10th place
100th place
1000th place
Answer: 1265.6037
Explanation:
What do the elements Nickel and Technetium have in common?
Answer:
Both Nickel (Ni, 28, 58.69) and Technetium (Tc, 43, [98]) have these features in common:
transition metalssome gray color (Tc is silver)are in the d blockhave two electrons in valence shell (although Tc's valence is 6)very similar electronegativity levels (1.9 vs 1.91)don't have a refractive indexdon't have a critical temperaturedon't have a heat of combustion measurementdon't have an EU Number or NFPA hazard leveldon't have an autoignition point or a flashpointThere are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, nickel (Ni) and technetium (Tc) belongs to d block element.
What is periodic table?Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.
Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.
Both Nickel (Ni) and Technetium (Tc) have these features in common:
Both are transition metals that is belong to d block
Both have two electrons in valence shell
Electronegativity value of these elements are same
Therefore, nickel (Ni) and technetium (Tc) belongs to d block element.
Learn more about periodic table, here:
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the Earth and moon have different forces of gravity.
Which measurement did they not use? *
mass
density
weight
O
volume
Answer:
volume
Explanation:
the mass is the same on earth as it is on the surface of the moon. The weight is determined by the force of gravity. The density is the thickness. But the volume is not a factor.
Which of these is a physical property?
A) ability to burn a piece pf paper
B) pure sodium reacts violently with water
C) the boiling point of water is 100°C
D) helium does not tend to react with anything
Answer:
the boiling point of water is 100°C
Explanation: