Question 2 (1 point) Plate Movement Focus Seismic Waves The white box should be identified as... A: Focus. B: Earthquake. C: P wave. D: Epicenter
Answer:
Epicenter
Explanation:
Answer: Where does an earthquake’s motion occur first?
The earthquake's motion occurs first at epicenter.
Explanation:
6. How are the frequency and wavelength of light related?
O Wavelength is determined by dividing frequency by the speed of light.
O They are inversely proportional to each other.
O They are directly proportional to each other.
O Frequency equals wavelength divided by the speed of light.
Answer:
Option B is correct = They are inversely proportional to each other.
Explanation:
Frequency and wavelength of lights are inversely proportional to each other.
The wave of light having highest frequency have shortest wavelength and the light with the shortest frequency having highest wavelength.
Formula:
Speed of light = wavelength × frequency
c = λ × f
λ = c/f
This formula shows that both are inversely related to each other.
The speed of light is 3×10⁸ m/s
Frequency is taken in Hz.
It is the number of oscillations, wave of light make in one second.
Wavelength is designated as "λ" and it is the measured in meter. It is the distance between the two crust of two trough.
Option A is incorrect:
Because wavelength is determine by dividing speed of light by frequency.
Option C is incorrect:
Because wavelength and frequency are not directly proportional to each other.
Option D is incorrect:
Because frequency is equal to the speed of light divided by wavelength.
Answer: it’s B or the second option
Explanation:
A mixture of iron and sulfur can be separated by attracting the Iron particles with a magnet. If the iron and sulfur mixture is heated strongly, iron (II) sulfide forms, which is no longer magnetic and cannot be separated by
physical methods. What is Iron (II) sulfide?
A heterogeneous mixture
B. compound
C. homogeneous mixture
D. element
Answer:B
Explanation: It is a compound
Iron (II) sulfide can not be separated by physical methods because it is a compound.
A compound is a combination of elements that are chemically combined. The components of a compound can not be separated by physical methods.
A compound is formed during a chemical change so it is not easy to reverse the process and obtain the constituent elements again.
Therefore, the components of Iron (II) sulfide can not easily be obtained again because a compound has been formed.
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Can a single atom be considered a molecule?
Answer: no
Explanation:
Answer: yes it can
Explanation: hope it help
Which statement is true? *
All solutions are mixtures.
All mixtures are solutions.
In a mixture, a substance must dissolve in another substance.
HELPP PLEASEEEEEEE ITS PROBS EASY FOR YOU GUYS
Answer:
ik that energy makes us movie and that it powers lights and electronics
kinetic energy ,chemical energy ,potential energy ,and thermal energy
the law of conservation of energy states that the total energy of an isolated system remains constant
Explanation:
hope it helpss
Carbon-12 and carbon-14 are isotopes of carbon. Scientists can compare the ratio of
carbon-14 to carbon-12 within an organic object to determine its age. How are isotopes
different from one another?
They have different numbers of neutrons.
They have different numbers of valence electrons.
They have different chemical properties.
They have different numbers of protons.
Answer:
I'm pretty sure the answer is B.
Explanation:
I hope this helps
Isotopes are different from one another as they have different numbers of neutrons.
What are isotopes?
Isotopes are defined as substances having same number of protons but different number of neutrons.Number of protons is characteristic for determining position of elements in the periodic table.
Since,all isotopes have the same number of protons and hence have same position.They have similar chemical properties as they have same number of electrons.
They find applications in the field of nuclear medicine and oil and gas research . There are 2 types of isotopes : stable and unstable
Unstable isotopes are radioactive and are called as radioisotopes.Some of these isotopes are man -made and hence also called as artificial isotopes.Every element has an isotope which is either man-made or natural .
Many properties of isotopes depend on mass which is measured in atomic mass unit. The difference in actual mass and mass number is called mass defect.
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You come across a thick deposit of shale that forms a layer in the ground. What can you infer about the area's past environment?
A. It was near a volcano, because shale forms when lava cools quickly and hardens.
B. It was covered by water, because shale forms when water deposits clay particles.
C. It was underground in a volcanic area, because shale forms when magma cools slowly and hardens.
D. It was covered by water, because shale forms when water evaporates and deposits the dissolved clay.
The bond between iodine and fluorine in l-F would be a:
O
a
Ob
ес
james bond
nonpolar covalent bond
ionic bond
o d
polar covalent bond
Answer:
D.) polar covalent bond
PRACTICE
1. The mathematical statemel, 2 + 2 = 4, is a fact. Imagine you have a bunch of apples. How could you use the
apples to prove this statement is a fact?
Answer:
If you take 4 apples and divide them by 2 there will be 2 apples in each set so if you add both sets of apples which is 2+2 there would be 4 apples
Who's model was titted the atomic theory of matter"? *
Answer:
John Dalton
Explanation:
Answer:
John Dalton, an English chemist, inferred that atoms had certain characteristics. He began to propose an atomic the- ory and model for atoms. The main ideas of Dalton's theory are summarized in Figure 2. With only a few changes, Dalton's atomic theory is still accepted today.
Explanation:
Select the correct answer.
What is the SI unit of time?
second
OB.
minute
Ос.
hour
OD. day
The atoms of compounds are _____________ combined in some way. Often times they come together to form groups of atoms called molecules.
Answer:
Chemically
Explanation:
Because chemical bonds form between the atoms.
What is the number of electrons in the outermost energy level of an oxygen atom?
Answer:
6 electrons.
Explanation:
An atom of oxygen has six electrons in its outermost energy level, and these are called valence electrons.
Review the desert food web above. What organism, absent in the web, would be MOST responsible for recycling organic matter back through the food web?
A) cougars
B) bacteria
C) sage brush
D) cactus plants
Show work
7. How many mm are there in 2.3Mm?
8. Copper has a density of 6.55g/cmº. A. piece of metal has a mass of 48.3g and a volume of 7.2cm.
Is this metal copper?
9. What is the mass of a liquid whose volume is 6.0 mL and a density of 1.3 g/cm??
10. You have 3.50 L of a liquid, whose density is 2.3g/cm3. What is it's Mass?
Answer:
7 = 2.3× 10⁺⁹ mm
8 = The density of copper is 6.55g/cm³ so the given metal is not copper.
9 = mass of liquid is 7.8 g
10 = mass of liquid is 8050 g.
Explanation:
7. How many mm are there in 2.3Mm?
mm is the symbol of millimeter.
Mm is the symbol of megameter.
1 mm = 10⁻⁹Mm
so in order to convert 2.3Mm into mm we will multiply the given value with 10⁺⁹
2.3 mm × 10⁺⁹ = 2.3× 10⁺⁹ mm
8. Copper has a density of 6.55g/cmº. A. piece of metal has a mass of 48.3g and a volume of 7.2cm.
Is this metal copper?
Given data:
Density of copper = 6.55 g/cm³
Mass of metal = 48.3 g
Volume of metal = 7.2 cm³
Is the metal is copper = ?
Solution:
The given problem will be solved through the density formula.
D = m/v
We will put the values in formula to calculate the density.
d = 48.3 g/ 7.2 cm³
d = 6.71 g/cm³
The density of copper is 6.55g/cm³ so the given metal is not copper.
9. What is the mass of a liquid whose volume is 6.0 mL and a density of 1.3 g/cm??
Given data:
Volume of liquid = 6.0 mL (1 mL = 1cm³)
Density of liquid = 1.3 g/cm³
Mass of liquid = ?
Solution:
Formula:
D = m/v
By putting the values in formula.
1.3 g/cm³ = m / 6 cm³
m = 1.3 g/cm³ × 6 cm³
m = 7.8 g
mass of liquid is 7.8 g.
10. You have 3.50 L of a liquid, whose density is 2.3g/cm3. What is it's Mass?
Given data:
Volume of liquid = 3.50L (3.50 ×1000 = 3500 cm³)
Density of liquid = 2.3g/cm³
Mass of liquid = ?
Solution:
Formula:
D = m/v
By putting the values in formula.
2.3g/cm³ = m /3500cm³
m = 2.3 g/cm³ × 3500 cm³
m = 8050 g
mass of liquid is 8050g.
A jet engine might use _____.
rapid combustion
respiration
slow combustion
nitrous oxide
Answer:
A jet engine might use rapid combustion.
Hope this helps!
Have a great day! :))))
I know this because i had this on a test yesterday and got it right.
An atom's Lewis dot structure has two dots. Which of the following elements could it be, and why?
A)Calcium, because it is an alkaline earth metal with two inner shell electrons. B)Carbon, because it has two electrons in its outermost p sub level.
C)Lithium, because it is a group 1 element with two bonding electrons. D)Magnesium, because it is a group 2 element with two valence electrons.
Answer:
The answer is D, Magnesium.
what happen when chlorine gas is passed into concentrated solution of naoh
Answer: By Stoichiometry, 3 moles of chlorine gas reacts with 6 moles of sodium hydroxide solution to form 5 moles of sodium chloride, 1 mole of sodium chlorate (V) and 3 moles of water. Hence, the reaction between chlorine gas and hot, concentrated NaOH solution yields Sodium chloride and sodium chlorate(V).
Explanation: Hope it helps :)
Where is the genetic material located in plant and animal cells?
A.in the lysosomes
B.in the nucleus
C.on the cell wall
D.inside the chloroplasts
HELP ASAP
Answer:
The genetic material of plant and animal cells is located in the nucleus (option B).
Explanation:
In living beings the nucleus of each cell contains the genetic information in a molecule called DNA. The DNA is formed by chains of nucleotides, whose order and sequence determine this information.
A DNA molecule forms a chromosome, and this contains genes, corresponding to segments or fractions of the DNA molecule that forms it. This information, contained in the nucleus, is necessary for the construction and functioning of each living being.
Lysosomes , cell wall and chloroplasts are other cellular structures that do not store genetic material.
Answer:
in the nucleus so b is the answer.
Explanation:
compared to the sun , all of the stars that can be observed in the night sky are?
Answer:
small- even though they are huge suns themselves.
Explanation:
A tapeworm attaches to the wall of its host’s intestine and starts to absorb the host’s nutrients. Eventually this can cause great harm to the host as the host loses many important nutrients.
Which type of infectious agent is a tapeworm?
a virus
a bacterium
a fungus
a parasite
Answer:
A parasite.
Explanation:
A virus usually invades cells and replicates.
A bacteria usually just replicates and either is beneficial or can harm.
A fungus usually decomposes or can make you sick.
A parasite usually is parasitism - it invades the organisms and leeches off them for shelter and nutrients and can harm.
Answer:
A parasite.
Explanation:
i got it right
What is the density of an object with a mass of 57.8g and a volume of 112.4mL?
Answer:
D=m/v
D=57.8/112.4
D=0.51423487544 g/mL^2
Explanation:
The density of an object with a mass of 57.8 g and volume of 112.4 mL is 514.23 mg/m L.
What do you mean by density?Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume.
Density is commonly expressed in units of grams per cubic centimeter.
Density can also be expressed as kilograms per cubic metre .
To calculate the density of an object ,
Given,
Mass=57.8 g(57.8×1000=57800mG) convert grams into milligrams
Volume=112.4mL
We know ,
Density =mass/volume
=514.23mG/mL
The density of an object with a mass of 57.8g and volume of 112.4 mL is 514.23 mg/m L.
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Which chemical can be toxic to the cells if it is not removed?
A.Oxygen
B.Glucose
C.Water
D.Carbon Dioxide
A box has a mass of 5 kg. What is the weight of the box on Earth?
Show your work. (Hint: What is the pull of gravity on an object at Earth's surface?)
Answer:
Given that W=mg:
The weight of the box would be 50 N taking the value of 'g' as 10ms-2. Taking the value of 'g' as 9.8ms-2, the weight of the box would be 49 N.
(N = Newtons)
Calculate the ratio of H+ ions to OH– ions at a pH = 6. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide. Then divide the H+ concentration by the OH– concentration. Record this calculated ratio in Table A of your Student Guide.
Compare your approximated and calculated ratios of H+ ions to OH– ions at a pH = 6. Are they the same? Why or why not? Record your explanation in Table A.
What is the concentration of H+ ions at a pH = 6?
What is the concentration of OH– ions at a pH = 6?
What is the ratio of H+ ions to OH– ions at a pH = 6?
The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14. Therefore, the pH of 1.0 x 10⁻³ M of solution is 7.002. pH is a unitless quantity. Therefore, the ratio between [H+] and [OH⁻] is 100:1.
What is pH?pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.
On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.
pH =-log [H+]
Substituting the given values, in above equation, we get
6 =-log [H+]
[H+]= 0.000001
[H⁺]x[OH⁻] = 10⁻¹⁴
0.000001x[OH⁻] = 10⁻¹⁴
[OH⁻] =0.00000001
ratio= [H+]/[OH⁻]
= 0.000001/0.00000001
=100:1
Therefore, the ratio between [H+] and [OH⁻] is 100:1.
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What does the illustrated symbol on the element key mean?
Answer: Each element has a symbol,one or two letters that represent the element much as your initials represent you. The symbol of an element represents one atom of that element. For 14 of the elements, the symbol consists of one letter.
Explanation:
What is a major difference between Animalia and Plantae kingdoms?
Answer:The plant kingdom consists of organisms which posess the ability to generate their own food through a process called photosynthesis. The animalia kingdom is not capable of this process so they are obligated to obtain food from others. Known to date there are about 250,000 known types of plants.
Answer:
Members of Kingdom Animalia are heterotrophic, whereas members of Kingdom Plantae are typically autotrophic.
Explanation:
An atom has 11 protons, 12 neutrons, and 11 electrons. What is the identity of the element?
Answer:
It's a Sodium Atom
A pool holds 20,000 liters of water. How many milliliters is this?
Answer:
2000000
Explanation:
Answer:
20,000,000
Explanation:
