Final answer:
A glowing trail caused by a meteoroid burning up in Earth's atmosphere is called a meteor, and a particularly bright version is known as a fireball.
Explanation:
The glowing trail that results when a meteoroid burns up in Earth's atmosphere is known as a meteor. Smaller particles, often no larger than a pea, create a streak of light in the night sky as they enter at high speeds, incinerating due to friction and heating in the atmosphere, resulting in the visible meteor. Larger particles can produce a particularly bright trail called a fireball, and if they are large enough, pieces may survive the journey to the ground, becoming meteorites.
which electromagnetic waves are used in ovens and cell phone communications
An atomic nucleus has. nuclear potential energy. chemical potential energy. electrical potential energy. static potential energy.
An atomic nucleus possesses nuclear, chemical, and electrical potential energy. Nuclear energy relates to changes within atomic nuclei, while chemical energy is stored in chemical bonds. Electrical energy corresponds to the position or separation of charged particles.
Explanation:When we talk about an atomic nucleus, we typically refer to three forms of potential energy: nuclear potential energy, chemical potential energy, and electrical potential energy. Each type of energy relates to the position, configuration, or state of the object and can be seen in various systems.
Nuclear potential energy is the energy possessed due to changes within atomic nuclei, such as the fusion of two light nuclei or the fission of a heavy nucleus. Chemical potential energy is energy stored in chemical bonds, which hold the atoms together in a molecule or compound through electrical forces. Bond-forming always releases energy, and bond-breaking absorbs the same energy.
Lastly, electrical potential energy relates to the position or separation between charged particles. The attraction between oppositely charged particles, such as in the atomic nucleus, represents this form of potential energy.
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How would an ash cloud from a volcano affect the flow of matter, cycling of energy, and organisms in an ecosystem?
Ash can have a big impact on the energy cycle!
Lots of ash from a volcano will block the sun, meaning sunlight isn't able to get to the producers that create energy from it.
Consumers would begin to suffer as producers can make any energy for them to consume. This pattern goes all the way through the food chain. Each level is affected by lack of food because of the ash in the sky.
Hope this helps!
a marine aquarium is found to contain a salt concentration of 40 ppt. How many grams of salt are in one liter of the solution?
Answer:
There is 40*10⁻¹² g (or 4 * 10⁻¹¹ g) solute in one liter of solution
Explanation:
Concentration measured in very small levels is expressed in terms of ppt i.e. parts per trillion which is the amount (grams) of solute present in a liter (L) volume of solution
[tex]1 ppt = 1*10^{-12} g\ solute/L\ solution\\[/tex]
The concentration of salt in the aquarium is 40 ppt
This implies that there is 40*10⁻¹² g salt in one liter of the solution
Select all of the following which are examples of physical change.
change of composition
creation of a new substance
change of appearance
change in size and shape of a substance
change in phase of a substance
expansion or contraction of a substance
Answer:
-change in size and shape of a substance
-change in phase of a substance
-change of appearance
-expansion or contraction of a substance
sorry I'm late lol, hopes this helps someone:)
Can someone please help me with A. Really need it
The layer beneath the crust is the _____.
A.mantle
B.core
C.ocean
Answer: Answer is the mantle. Because I did that on USA Test Prep.
Explanation:
Why doesn't the density of the object change when you adjust the mass and volume of the objects?
On the periodic table what row and column are Magnesium in? What family is it in?
As a ship is unloaded, why does it rise higher in the water?
The buoyancy of the ship and its cargo decreases.
The mass of the ship and its cargo increases.
The density of the ship and its cargo increases.
The density of the ship and its cargo decreases.
A ship rises higher in the water when it is unloaded due to a decrease in the density of the ship and its cargo. The unloaded ship has a lower mass relative to its volume, which means it displaces less water and thus floats higher, according to Archimedes' principle and the principle of flotation.
As a ship is unloaded, it rises higher in the water because the density of the ship and its cargo decreases. This change in density is related to Archimedes' principle, which states that the buoyant force on an object submerged in a fluid is equal to the weight of the fluid that the object displaces. When a ship is loaded with cargo, its overall density is higher, and it displaces more water, causing it to sink lower in the water. As cargo is removed, the ship's mass decreases while its volume remains constant, thus lowering the average density. Since the ship has a lower density, it displaces less water and therefore rises higher in the water.
The fraction submerged is the ratio of the volume submerged to the volume of the object. When the ship is unloaded, this ratio decreases, indicating less of the ship's volume is submerged. According to the principle of flotation, a floating object will displace a weight of fluid equal to its own weight. As the weight of the ship decreases when being unloaded, the volume of water it needs to displace to maintain this equilibrium also decreases, resulting in the ship rising.
An object is seen to either speed up, slow down, or change direction.These behaviors are caused by________.
A.a balanced set of forces
B.stable factors
C.unbalanced forces
D.frictional force
Answer:
C. unbalanced forces
Explanation:
That is what unbalanced forces do
An object is seen to either speed up, slow down, or change direction.These behaviors are caused by some unbalanced forces. Thus, option C is correct.
What is force?Force is an external agent acting on a body to change its motion or to deform it. Force is a vector quantity and is characterised by the magnitude and direction.
If two or more forces are acting in the same direction, the net force on the object will be the sum of their magnitudes. If two equal forces are acting on opposite directions they will cancel each other in magnitude and is said to be balanced.
A balanced force does not make any displacement whereas if wo unequal forces are acting from different directions, there will be net force and this unbalanced force causes the change in motion of an object.
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give examples of how scientists use repeated trials and replication in conducting experiments
What type of volcano would u find along a convergent boundary
During science class, while studying mixtures, you mix together table salt and sand. Your teacher challenges you to separate the salt from the sand. What property could you use and how would you use it?
Answer:
Use solubility
Explanation:
Salt will dissolve in water while sand will not.
Dissolve the mixture of sand and salt in water, make sure all salt is dissolved. Filtrate the solution a couple of times and use vacuum filtration at the end to obtain a clear solution. At this point you will have wet sand and a salty solution. Take the salty solution and evaporate water to obtain the salt.
Which of the following is not an indication of a chemical reaction?
1.) Heat is generated when two substances are combined.
2.) A solid quickly forms when two liquids are combined.
3.) A substance melts when sitting in the Sun.
4.) A substance sours when sitting in the Sun.
Answer: Option (3) is the correct answer.
Explanation:
A reaction due to which there occurs change in chemical composition of reactants is known as a chemical reaction.
For example, evolution of heat when two substances combine together shows a chemical reaction has taken place between the substances.
Whereas a reaction which does not bring any changes in chemical composition of the reactants is known as a physical reaction.
For example, boiling point, melting point, mass, volume etc are all physical properties.
Thus, we can conclude that out of the given options a substance melts when sitting in the Sun, is not an indication of a chemical reaction.
Answer:
A substance melts when sitting in the Sun.Explanation:
describe examples of failed experiments that produced valuable information
Some of the valuable information and inventions that were made by failed experiments are:
Pacemaker:Wilson Greatbach made a mistake while building a heart rhythm recording device, he pulled out the wrong sized resistor and plugged it into the circuit. When it was installed he realized it sounded like a human heartbeat. With a bit more modifications the result was an implantable pacemaker, which has since saved thousands of lives.
Synthetic DyeIn 1856, dyes were made from natural materials - and 18-year-old chemist William Perkin creating an artificial version of the malarial drug, quinine. Unfortunately, his experiments went wrong, leaving behind a dark, oily sludge, a color more vibrant than he’d seen before. He got Nobel Prize for it which was called a synthetic dye.
PenicillinSir Alexander Fleming was conducting experiments to discover a “wonder drug” to treat a variety of diseases when he noticed an unknown fungus growing in a discarded Petri dish. This strange fungus was dissolving the surrounding bacteria. Fleming lately came to know that he had unintentionally found one of the most important drugs for treating infections for which he got Nobel Prize.
if two objects have different temperatures which direction will heat move for how long
The Heat will flow from the region of Higher temperature towards tthe region of lower temperature.
What is Thermodynamics ?The study of the relationships between heat, work, temperature, and energy is known as thermodynamics.
The laws of thermodynamics describe how energy changes within a system and determine whether a system can use its surroundings to perform useful work.
Thermal radiation, thermal conduction, thermal convection, and phase shifts are a few examples of the several types of heat transport processes.
Heat flow happens when a hot object transfers its heat through a conductor to a cold object, much like how high-energy entities transfer their energy to low-energy objects.
Therefore, The Heat will flow from the region of Higher temperature towards tthe region of lower temperature.
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If the moon were twice as far from earth as it now , which of the following would be true?
A . Earth's gravitational pull on the moon would be the same as it is now because distance does not affect earth's gravity.
B . The gravitational pull would be zero.
C . The gravitational pull between the moon and earth would decrease because the distance between the moon and earth would have increased.
D . The gravitational pull between the moon and earth would be the same because their masses has not changed.
Answer:
d
Explanation:
The gravitational force between two objects will decreases as the distance between them increases. Hence, if the moon goes far, The gravitational pull between the moon and earth would decrease.
What is gravitational force ?The gravitational force is the force by which an object attracts other object into its center of mass. The gravitational force depends on the masses of the objects and distance between them by the equation written below:
Fg = G m1 m2/r²
where G is the universal gravitational constant equal to 6.67 × 10⁻¹¹ N/kg²m²
Earth pulls every object into its ground by gravitational force. When we move out of earth's surface we feels a weightlessness due to the decrease in gravitational pull.
Moon keeps its orbiting around earth because experience a gravitational pull from earth. When moon goes far from earth, this gravitational pull will decrease. Hence, option C is correct.
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what is the balanced equation for FeS+HCI>FeCl+H2S
Can someone help me plaseee
_ g of potassium reacts with 16 g of oxygen to produce 94 g of potassium oxide
Answer:
78 g of potassium
Explanation:
According to Lavoisier's Law, the sum of the mass of the products must be equal to the sum of the mass of the reactants.
On the reaction we have potassium oxide as product (K2O) and as reactants potassium (K) and Oxygen (O2)
Having sayin this, the reaction must be as follows:
K + O2 -> K2O
We need to balance the equation to have the same amount of molecules of each element in each side:
4K + O2 -> 2K2O
Taking into account the molar mass of each compound, the reaction can also be written:
4(39g/mol) + 1(32g/mol) -> 2(94g/mol)
solving the multiplications we have that:
156g of K + 32g of O2 -> 188g of K2O
therefore, we need 78 g of K to obtain 94 g of K2O with 16g of O2
Sugars such as glucose, fructose, and ribose are examples of _______. A. proteins B. nucleic acids C. carbohydrates D. lipids
Sugars such as glucose, fructose, and ribose are examples of carbohydrates. Therefore, the correct option is option C.
What is carbohydrates?Class of substances that occur naturally and derivatives created from them known as carbohydrates. Early in the 19th century, it was discovered that materials like wood, starch, as well as linen were primarily made of molecules with the general formula C6H12O6, which contained carbon atoms (C), hydrogen (H), as well as oxygen (O). It was also discovered that some organic compounds with similar formulas had a similar percentage of hydrogen to oxygen.
The most prevalent and widely distributed organic material in nature, carbohydrates are a necessary component of all living organisms. Sugars such as glucose, fructose, and ribose are examples of carbohydrates.
Therefore, the correct option is option C.
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Neon has 8 electrons in it's outer shell. Does it need to bond? Why or why not?
Which term is defined as exact location where an earthquake occurred
Which of the following is made of atoms? A gravity B light C heat D air
Igneous rocks that form when lava cools on Earth's surface are called _______ igneous rocks
Igneous rocks that form on Earth's surface when lava cools are known as extrusive or volcanic igneous rocks. They are fine-grained, leading to a duller appearance due to their rapid cooling.
Explanation:Igneous rocks that form when lava cools on Earth's surface are called extrusive igneous rocks. These rocks are also known as volcanic igneous rocks and are characterized by their fine-grained texture because they cool quickly, which doesn't allow for large crystals to form. The quick cooling on the Earth's surface leads to the fine-grained structure that causes these rocks to look dull and to sparkle less as compared to their intrusive counterparts. Basalt is one of the most common types of extrusive igneous rocks, often formed from basaltic lava in volcanic eruptions.
Final answer:
Extrusive igneous rocks, also known as volcanic igneous rocks, are formed when lava cools on Earth's surface. These rocks have small crystals and a dull appearance.
Explanation:
When lava cools on Earth's surface, it forms extrusive igneous rocks. These rocks are also known as volcanic igneous rocks. Extrusive igneous rocks cool quickly on the surface and have very small crystals, which give them a dull appearance.
Non-metal liquid with 45 neutrons
When two pure substances are combined so that each of the pure substances retains its own properties, what is the result
describe how continents and oceans are carried on tectonic plates
Continents and oceans are carried on tectonic plates - segments of the Earth's crust and upper mantle - which move due to heat convection in the mantle. This movement leads to the formation of subduction zones and other geological features and events. The process serves as a cooling system for Earth.
Explanation:The Earth's crust and upper mantle, up to a depth of about 60 kilometers, are divided into massive segments called tectonic plates. These tectonic plates, carrying the continents and oceans, fit together like a jigsaw puzzle and move due to the slow convection of the mantle - the process of heat transport by the upward flow of warmer material and the downward flow of cooler material.
Plates move at an average speed of about 4 to 5 centimeters per year, similar to how your hair grows. When two plates converge, one often subsides beneath the other forming a subduction zone. This process is crucial in forming marvelous geographical features such as trenches, mountain ranges (like the Alps due to the collision between the African and Eurasian plates), and more.
Plate tectonics is indeed a significant mechanism for Earth's heat transportation - acting as a cooling system for the planet. All these motions lead to various geological events such as earthquakes, volcanic eruptions, and continental drift.
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Describe four ways you could increase the rate of a chemical reaction.
1. Increase the temperature
2. Increase the pressure of an reacting gas
3. Solid reactants are broken into smaller pieces
4. The concentration of a dissolved reactant is increased.