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Related Questions
PLs HELP ME LIKE ASAP
How do the light rays emitted by a candle travel?
Answers
Answer:
Explanation:
The light rays coming from the unlit candle and the reflected light rays of the lit candle are superposed on top of one another. ... For very transparent substances like glass, only about 5 percent of the light that hits it is reflected. The remaining 95 percent is transmitted—it passes right on through.
Answer:
The light rays coming from the unlit candle and the reflected light rays of the lit candle are superposed on top of one another. ... For very transparent substances like glass, only about 5 percent of the light that hits it is reflected. The remaining 95 percent is transmitted—it passes right on through.
Explanation:
The __lithosphere__ combines the two crusts, oceanic and continental, with the coolest part of the __________________. The asthenosphere allows the tectonic plates to slide on the putty substance of the mantle and the mesosphere is the ___________________ part of the mantle. The outer core is hot enough to turn the metal into a ________________. The inner core is the hottest but the extreme pressure makes it a ________________.
Answers
Answer:
And the upper mantle, Crust, Smallest, Liquid ,Solid
Explanation:
Which set of coefficients would balance the following equation?
Mg + AlCl3 → Al + MgCl2
A. 2Mg + AlCl3 → Al + 2MgCl2
B. 3Mg + 2AlCl3 → 2Al + 3MgCl2
C. Mg + 2AlCl3 → 2Al + MgCl2
D. 3Mg + 4AlCl3 → 4Al + 3MgCl2
Answers
Explanation:
Reactants side Products side
Mg - 3 Mg - 3
Al - 2. Al - 2
Cl - 6 Cl - 6
The chemical equation which is balanced according to law of conservation of mass is 3 Mg + 2 AlCl₃ → 2 Al + 3 MgCl₂.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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Fill in the chart to identify how scientists represent matter and chemical changes in matter.
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A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side
A chemical symbol is a notation of one or two letters representing a chemical element
A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.
Why might different types of fossils be found in rock layers that come before and after a rock layer that contains no fossils?
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Answer:
because they can move around under the earth
Explanation:
HURRY PLEASE
Sarah says that galaxies are larger than solar systems. What evidence supports this claim?
Group of answer choices
Galaxies are made of stars.
Our solar system is at the heart of the Milky Way Galaxy.
Solar systems are older than galaxies.
Solar systems and galaxies are about the same size.
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Use the drop-down menus to select the names of the labeled structures.
A: B: C:
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Answer:
A: petal
B:stigma
c: stamen
Explanation:
A flower is considered as a complete one if it has petals, stamen, carpel and sepals. Sometimes pistil is present. Here in the structure part A is Petal, B is Stigma and C is stamen.
What are parts of a flower?The calyx, corolla, androecium, and gynoecium are found to be the four whorls of a modified leaves which constitute the flower. One of the flower parts in each of the whorl contains sepals, petals, stamens and pistils.
Here A is petal. This part is the bright coloured region which attracts bees and birds. This part help us to differentiate one flower from another. Some petals are dark coloured whereas some other are pale coloured.
Here B is stigma. The stigma is the sticky part of a flower. It is the specially adapted portion of the pistil modified for the reception of pollen. It has a feathery, branched elongated structure.
Here C is stamen - The male reproductive part of a flower is called the stamen. The stamen has long slender stalk called the filament with a two -lobed anther at the tip.
Thus the given parts are petal, stigma and stamen.
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If two people attempt the same maneuver, what determines the amount of force that each is required to exert?
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Answer:
Explanation:
you need to change either the turn of the jump or push off higher or lower from the wall
If the two individuals start at the same position and time, the amount of force exerted by each person is determined by mass of the person.
The amount of force exerted by each person is given by Newton's second law of motion, which states that the force exerted by an object is directly the proportional to the product of mass and acceleration of the object.
F = ma
where;
F is the applied forcem is the mass of the objecta is the acceleration of the objectThus, If the two individuals start at the same position and time, the amount of force exerted by each person is determined by mass of the person.
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What is the average thermal energy of ice?
Answers
Answer:Ice doesn’t have a thermal energy.
Explanation:
Answer ian rlly kno ...........
Answers
0-2
2+2 (cause one was negative add instead of subtract)
You would get -2/4 simply that to
-1/2
When potassium metal is added to water, a violent reaction occurs that releases a tremendous amount of light and thermal energy. This is an example of an _________ reaction.
1). endothermic
2). exothermic
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Answer:
An Exothermic reaction.
Explanation:
An exothermic reaction produces heat, while endothermic reactions absorb heat
I NEED HELP WITH BOTH QUESTIONS PLZZ!!!!!!!!
Answers
Answer:
Volcanoes erupting
Sea levels rising, glaciers melting
Explanation:
Ion kno bout the second one but I kno the first one is right
What type of erosion cause a canyon form?
water
wind
ice
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Answer:Water
Explanation: none
need help on queston 4 and 5
Answers
5) basic
b. acidic
How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a lighter material?
(A)The amount of force needed would be greater.
(B)The amount of force needed would be the same.
(C)The amount of force needed would go up and down with the kite.
(D)The amount of force needed would be smaller.
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Which property of physical changes explains why matter is conserved in a physical change? The arrangements of particles do not change, and the bonds between atoms do not break.
Mass, not energy changes in a physical change.
Energy and mass change in a physical change.
The bonds between atoms do not break, it's only the arrangement that changes.
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Mass is the amount of matter in an object, and weight is the downward pull on an object due to gravity. Which property of physical changes explains why matter is conserved in a physical change? The bonds between atoms do not break; it is only the arrangement that changes.
hope I helped! :)
The __lithosphere__ combines the two crusts, oceanic and continental, with the coolest part of the __________________. The asthenosphere allows the tectonic plates to slide on the putty substance of the mantle and the mesosphere is the ___________________ part of the mantle. The outer core is hot enough to turn the metal into a ________________. The inner core is the hottest but the extreme pressure makes it a ________________.
Please help me
Answers
Answer:
The lithosphere And the upper mantle combines the two crusts, oceanic and continental, with the coolest part of the Crust?. The asthenosphere allows the tectonic plates to slide on the putty substance of the mantle and the mesosphere is the Smallest? part of the mantle. The outer core is hot enough to turn the metal into a Liquid The inner core is the hottest but the extreme pressure makes it a Solid.
Answer:
....,............
........
How is salinity affected?
(a) evaporation increases
(c) freezing increases
(d) melting increases
(e) precipitation increases
Where does the energy that causes evaporation come from?
What role does gravity play in the water cycle?
Describe the flow of one molecule of water through the water cycle, beginning in the ocean.
Answers
Answer:
A and E.
Explanation:
When water evaporates, it leaves the salt. When rain falls, the salt is diluted. The sun causes the evaporation. The also the sunlight is the energy source, the greatest force propelling the water cycle is gravity. Gravity is the force of attraction between two objects, and Earth’s gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water. Also Water travels in a continuous path through Earth called the water cycle. The journey starts in the Earth's oceans. As the Sun heats the ocean, the water evaporates into a gas. The gas meets cooler air, and the gas changes into droplets of tiny water molecules. This process is called condensation. Little droplets of water fall back down to Earth again as precipitation. The precipitation fills up the rivers and various other things and the cycle begins all over again. Now with this being said, there is much more than just this!
Good luck!
The wastewater in your home goes to one of three places. It can run into a home septic system, it can go to a centralized sewage treatment plant, or it might be directly discharged into a body of water. Where does your water go after it goes down the drain?
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What are the two things needed to make earth habitable, according to the video
How does Dr.Edgar cause what she knows about the earth to learn about mars?
Link to the video: maybe can get to the comments
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a
a decrease in the number of zebra mussels along the waterways
b
an increase in the number of zebra mussels along the waterways
c
no effect because more time is needed to determine an outcome
d
no change in the number of zebra mussels infecting the waterways
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Could you add a screenshot so we know what's being asked please?
List ten sources of water pollution.
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Landfills, trash dumps, sewer leaking into the water, litter near the shore, that’s as many as i can think of
The shape of the illuminated portion of the Moon as seen by an observer, usually on Earth:
1. Lunar Eclipse
2. Solar Eclipse
3. Moon Phases
4. The Sun
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Answer:moon phases
Explanation:
Moon phases because the moon phases changers every day
describe what is happening to rock climbers’ body systems and cells at the small scale.
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Answer:
It is being pressured!
Explanation:
The pressure point changes so people aren't used to that certain pressure
As a rock climber climbs higher, the systems and cells experience a decrease in pressure.
Pressure decreases with height. Hence, the higher you go, the lesser the pressure becomes and this may have obvious implications on the cells and systems of a rock climber.
As air pressure decreases at higher altitude, a rock climber may find it difficult to breathe because of the sudden decrease in air pressure hence the respiratory system is affected.
Prolonged exposure to high altitudes may lead to a decrease in the amount of oxygen in blood causing the heart to pump harder.
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PLS HELP I AM CONFUSED!!!!!!!THESE ARE ALL THE PIONTS I HAVE LEFT!!!
The student mixed up 500ml of salt solution. He weight it and found it mass to be 585g. will his shake up toy work the way that he want it to work?why or why not?
Remember, 1 mL = 1cm
Show your math
Answers
Answer:
...
Explanation:
find density of salt solution 585g/500cc = 1.17g/cc
leaves density = 1.25g/cc, stars density = 1.12g/cc
Stars float, leaves sink. since everything is in g/cc, you do not have to worry about the info 1ml=1cc.
density = mass / volume.
density of salt solution = 585g(mass)/500cc(volume)
The moon's observed motion across the sky is PRIMARILY due to the
A)
rotation of the moon.
B)
rotation of the earth.
C)
orbit of the moon around the earth.
D)
orbit of the earth around the moon.
Answers
Answer:
I think that rotation of the moon is the correct one
Explanation:
C) orbit of the moon around the Earth
Scientists approximate that there are 20 billion stars like our sun in the Milky Way.
Why does the sun appear to be brighter than any other star in the Milky Way?
A.the sun is older than all of the other stars in the Milky Way
B.the sun is closer to the earth than any other star in the Milky Way
C.the sun is hotter than any other star in the Milky Way
D.the sun has more energy than any other star in the Milky Way
Answers
Answer: B.) the sun is closer to the Earth
Answer:
C
Explanation:
the sun is really hot so that is why
and please answer the questions on my profile please i beg of you its due by 11:59 pm TONIGHT or i get kicked out of school.. pls help..
“The use of fossil fuels by human’s is heating up the atmosphere” is an example of a law or theory? Explain your answer in at least 3 sentences.
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Answer: Theory
It is a theory which is true because it is not a law. A theory by definition is “ a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena.” A law is “a rule defining correct procedure or behaviour in a sport.“ Therefore since this a scientific fact and it is used/ not against the law it is a theory
Explanation:
A fireman feels the heat from a fire before he even gets up to it. This is caused by ___.
a conduction
b convection
c radiation
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Answer:
C. Radiation
Explanation:
Radiation is waves or particles going through space, so you would feel heat
Drinking water has two sources. It can come from surface water, such as reservoirs or rivers. Or it can come from groundwater where it either naturally surfaces in a spring or where it must be pumped to the surface from a well. Where does your drinking water come from?
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82% of drinking water supplies in Ireland are sourced from surface water (rivers and lakes) and 18% comes from groundwater - it depends where you live (quick g00gle search should answer you question)
Our drinking water comes from the underground sources like wells, hand pumps, etc.
What are the sources of water?Sources of water are the places from where the water comes to earth for the uses.
In our houses drinking water comes from the underground sources, through the wells, hand pumps, etc. From that source we get natural water for the drinking purposes.
Hence we get water from underground sources.
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