The time taken for the radio signal to reach the earth is 9.1 x 10^3 seconds.
Let us recall that radio waves are part of the electromagnetic spectrum. This means that they travel with the speed of light.
The speed of the wave of obtained from the relation;
Speed = Distance/Time
Therefore;
Time = Distance/Speed
Distance = 2.72 x 10⁹ km or 2.72 x 10^12 m
Speed = 3 x 10^8 m/s
Time taken = 2.72 x 10^12 m/3 x 10^8 m/s
= 9.1 x 10^3 seconds.
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Someone pls tell me the answer
Answer:
6 inches and that should be the answer
Which law in science uses addition?
Answer:
Scientific laws can be written as mathematical equations, so they are called quantitative. However, there aren't very many laws in biology. They are more common in physics and chemistry.
Explanation:
which method would be best for separating the components of a mixture
Answer:
A
Explanation:
Evaporation It would become a crystal
Cell structure escape room
Can someone help me with this?
Refer to the attachment
What law does a balanced chemical equation demonstrate?
Answer:
The law of conservation of mass
Explanation:
A chemical equation is an expression of the net composition change associated with a chemical reaction. It shows how a certain amount of reactants yields a certain amount of products. Both of these amounts are measured in moles. Chemical equations often contain information about the state of the reactants: solid, liquid, gas, or aqueous. In addition, they always adhere to the law of conservation of mass, which holds that matter can change form, but cannot be created or destroyed.
Look closely at the remaining parts of the flower. Describe the structures you can see now that the petals are gone.
Anther
Filament
Pistil
Stalk
Answer:
Explanation:AntherFilamentPistilStalk
Which of the following compounds contains an ionic bond? *will give brainliest plus 15 points*
A. CCl4
B. CO2
C. KB
D. NHS
Answer:
C
Explanation:
ionic bonds are bonds between metals and non-metals or metalloids ,so the only compound with a metal is KB
What situations might you encounter?
Please it is for my assessment please could you give me 6 answer please
1. What allowed fusion reactions to take place in the early universe?
Answer:
Nuclear fusion in stars converts hydrogen into helium in all stars
The density of gold is 19.3 g/cm³. What is the mass of 11.3 cm³ of gold?
Answer:
218.09g
Explanation:
the formula for density is mass/volume
you have volume so rlly what you have is 19.3g/cm3=m/11.3cm3
so mass equals density x volume
and 19.3 x 11.3 = 218.09
NEED AN ANSWER FROM K12 MUST HAVE THE ANSWERS OR WILL GET REPORTED NO LINKS
How many laws of motion are there? (Newton's)
A. 3
B. 2
C. 1
D. 4
To which kinds of objects do Newton's laws of motion apply?
A. only objects rolling
B. only objects going down a hill
C. all objects
D. only objects flying
As a surfer is seen riding a wave toward the shoreline, what is the shoreline?
A. displacement reference
B. coordinate plane
C. Cartesian boundary
D. reference point
Which does not take the direction of the motion into account?
A. Distance
B. Displacement
C. velocity
Answer: A) 3 / C) all objects / D) reference point / C) velocity
Explanation: I did some research before answering, I hope this helps.
What is the difference between an aqueous solution and a liquid (simple definition)
Answer:
The primary distinction between liquid and aqueous is that liquid refers to any fluid that is almost incompressible, whereas aqueous refers to liquids that contain water as the solvent.
Explanation:
the bonding between sodium and chlorine, why is it that type of bounding? what it creates? what happens in water when you put sodium chloride in water?
I need it quickly and not copy-write.
Answer:
NaCl sodium chloride is an ionic salt. Also commonly known as table salt. When you put sodium chloride in water, the molecule dissolves in water because the covalent bonds of water (H2O) is stronger than the ionic bond of NaCl.
Explanation:
To be more specific, the two hydrogen (+) molecules are attracted to the chlorine due to its negative charge. The oxygen (2-) of the water is also attracted to the Na (+). Water eventually pulls Sodium Chloride apart (breaks ionic bond) and dissolves it.
Select the statements that correctly describe the characteristics of a polar aprotic solvent. Multiple select question. A polar aprotic solvent interacts strongly with anions as well as cations. A polar aprotic solvent cannot interact well with any type of ion. Acetone is a polar aprotic solvent because it cannot act as a hydrogen-bond donor. A polar aprotic solvent solvates cations by ion-dipole interactions.
A polar aprotic solvent is a polar solvent that does not have a hydrogen atom.
A polar protic solvent is a solvent that contains hydrogen. Water, ethanol and acetic acid are all examples of a polar protic solvent. A polar aprotic solvent is a polar solvent that does not contain hydrogen. Dimethyl sulphoxide, acetonitrile and dichloromethane are all examples of polar aprotic solvents.
The following are true about polar aprotic solvent.
Acetone is a polar aprotic solvent because it cannot act as a hydrogen-bond donor.A polar aprotic solvent solvates cations by ion-dipole interactions.Polar aprotic solvents solvates cations because the negative end of the dipole can interact well with the cation. Polar aprotic solvents interacts with ions by ion - dipole interaction.
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Identify the three major groups of rocks in the rock cycle. Be able to describe how one rock type could change into another. Explain how forces inside the earth are related to the rock cycle.
Answer:
igneous,sedimentary,and metamorphic
Explanation:
Rocks are collections of minerals of various sizes and types. The three main rock types are igneous, sedimentary, and metamorphic. Crystallization, erosion and sedimentation, and metamorphism transform one rock type into another or change sediments into rock.
1
Which of the following is harmful to natural resources?
A pollution
B
conserving natural resources
C recycling
Read the description of each element, then write its name and symbol
A) This non-gaseous and reactive metal belongs to group 16
B) This element has an atomic number of 42
C) This metal has an atomic mass of about 56
D) This Group 2 metal is in the sixth period
E) This metal element is liquid at room temperature
F) This is the lightest element of the second period
G) This element has a valence electron and six electronic layers
H) This element has a mass number of 184
I) This element has seven valence electrons and is in the fifth period
J) This element has four electronic layers and its outer layer is full
Answer:
Diatomic carbon (systematically named dicarbon and 1λ2,2λ2-ethene), is a green, gaseous inorganic chemical with the chemical formula C=C (also written [C2] or C2). It is kinetically unstable at ambient temperature and pressure, being removed through autopolymerisation. It occurs in carbon vapor, for example in electric arcs; in comets, stellar atmospheres, and the interstellar medium; and in blue hydrocarbon flames.[1] Diatomic carbon is the second simplest form of carbon after atomic carbon, and is an intermediate participator in the genesis of fullerenes.
Explanation:
This image represents a(n)
a) atom of nitrogen
b)mixture of nitrogen atoms
c)compound containing nitrogen
d)molecule of diatomic nitrogen
Answer:
mixture of nitrogen B
Explanation:
ok
Answer:
Molecule of diatomic nitrogen
Explanation:
di means 2.
Since, 2 Nitrogen atoms are there, they share their electrons and form a molecule of diatomic nitrogen.
Imagine having to use brainly Couldn't be me.
nubs
which molecule is a common output of glycolysis, pyruvate oxidation, and the citric acid cycle?
Explanation:
Acetyl CoA links glycolysis and pyruvate oxidation with the citric acid cycle. In the presence of oxygen, acetyl CoA delivers its acetyl group to a four-carbon molecule, oxaloacetate, to form citrate, a six-carbon molecule with three carboxyl groups.
Acetyl Co-A is a common output of glycolysis, pyruvate oxidation and citric acid cycle.
How does acetyl co-A links glycolysis and citric acid cycle?Acetyl Co-A links glycolysis and pyruvate oxidation with the citric acid cycle as in presence of oxygen it delivers its acetyl group to four carbon molecule to form citrate a six carbon molecule with three carboxyl groups .
In the citric acid cycle, 2 carbons of acetyl group which were of acetyl Co-A are released in form of carbon dioxide a major product of cellular respiration. For each acetyl Co-A which enters citric acid cycle 2 carbon dioxide molecules are released.
The transition reaction is the conversion of 3-carbon pyruvate to 2- carbon acetyl co-A and 2 molecules of carbon dioxide.
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Is soap solution a strong, weak or non electrolyte
Answer:
Nonelectrolytes do not dissociate into ions in solution; nonelectrolyte solutions do not, therefore, conduct electricity. ... Strong and Weak Electrolytes.
Explanation:
nitrates, turbidity and acidity. Whichwater sample was likely runoff from a farm?
Answer:
What is the most likely source of nitrogen in runoff? Fossil fuel emissions.
bl Write a word equation for
the combustion of sulfur.
Example, when sulfur is burned in the air (one of my favorite chemical reactions) it combines with oxygen in the air to form an oxide. We consider this reaction in the form of a chemical equation: S (sulfur) + O2 (oxygen) |> SO2 (sulfur dioxide)
Use the molecular formulas for Ethanol (C2H5OH), Oxygen (O2), Carbon Dioxide (CO2), Water (H2O), and the yield sign () to write a balanced chemical equation for the reaction:
To balance the equation we have to find a combination of coefficients for the species that make the number of each element on both sides of the equation equal.
C₂H₅OH + 3O₂ → 2CO₂ + 3H₂O
Checking to ensure the reactant and product sides of the equation are equal.
Reactants Products
C 2 2
H 6 6
O 7 7
wich group was the control group? The experimental group?
Answer:looks spicy
Explanation:what are you asking
please help!! i do NOT understand chemsitry at all
Answer:
pretty sure there is a calculator
Explanation:
there is a calculator for it ( that's what I do ) btw there is a calculator for every even science or chemistry
When electrons are shared between atoms, a covalent bond is formed
True
False
Answer:
true
Explanation:
ionic transfer of e^- ions formed (charges)
ionic=non-metal+ metal
ex: F+Ca
covalent sharing e^- no true charges
covalent= non-metal+ non-metal
ex: F+P
( my notes)
Summarize how C-14 and U-238 dating together can be used to determine fossil ages.
Answer:
Uranium 238 is only found in igneous or volcanic rocks. So no fossils can be dated directly using U 238.
Because of the huge differences in the half lives of Carbon 14 and Uranium238 they cannot be used together. Carbon 14 can only be used to date fossils of a very recent age. Uranium 238 can only be used to date volcanic rocks of a very old age.
Explanation:
Have your mother and father (or any adult man and woman) sing together on the same note, at the same pitch (not an octave apart). Write down any differences you can hear. Is one voice lower or higher sounding (even though they are singing the same pitch)? Are there other differences you can hear? Explain your results using the terms “overtones,” “frequency,” “pitch,” and “sound quality.”
Answer:
No one sounds the same in singing everyone has a different pitch, overtones, and sound quality. Now in some songs people harmonize together and that can sound the same in pitch but there are still different pitches and tones.
How many joules of heat would be required to heat 0.5 kg of aluminum by 2k?
Answer:
the answer is c. 900 joules of heat
Explanation: