Katlyn pours hot water into the flavored gelatin powder and stirs.
Gelatin powder is the solute. Water is the solvent. (D)
The correct answer is D. Gelatin powder is the solute and water is the solvent in the gelatin dessert that Katlyn makes. Water is the component in the larger amount and is responsible for dissolving the gelatin powder.
When Katlyn makes a gelatin dessert, she is creating a solution by mixing two substances. In this context, the gelatin powder is the solute, which is the substance that gets dissolved, and the hot water is the solvent, which is the substance that does the dissolving. Therefore, the correct answer to the question is D. Gelatin powder is the solute. Water is the solvent.
Solvents are typically the component of a solution that is present in the larger amount and usually determines the phase (solid, liquid, or gas) of the solution. In Katlyn's case, the solvent - water - is a liquid, which then forms a gel upon cooling, as the dispersed gelatin molecules create a three-dimensional network in the cooled dessert.
2) In order to generate electricity from mechanical energy, one essential element needed to transform the energy into electrical energy is
Answer:
Generator.
Generator is the essential element used to convert Mechanical energy to Electrical energy.
For example, a shaft rotates in the generator, produces EMF.
In order to determine the velocity, you must know the distance and the time. the direction and speed. the time and speed. the direction and time.
In order to determine the velocity, you must know the direction and speed option (2) the direction and speed is correct.
What is the distance?Distance is a measurement of the separation between two things or places. When we talk about distance, we're talking about a physical length or an estimate based on other physics or practical usage factors.
It is given that:
In order to determine the velocity, you must know:
The options are:
The distance and the timeThe direction and speed. The time and speed. The direction and time.As we know,
A vector quantity is a velocity. It is characterized as a movement per instant.
Distance in a specific direction is known as dispersion, when an entity travels in a certain direction, such straight line, velocity can also be related to speed.
Thus, in order to determine the velocity, you must know the direction and speed option (2) the direction and speed is correct.
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Will give brainliest!
Question 4(Multiple Choice Worth 2 points)
The amount of power has decreased. This is most likely the result of
less work being done over a longer period of time.
less work being done over a shorter period of time.
the same amount of work being done over a longer period of time.
the same amount of work being done over a shorter period of time.
Number 1 is correct.
The amount of power has decreased. This is most likely the result of
A. less work being done over a longer period of time.
What happens to the force when time is reduced?Power is defined as work divided by time, or P = W / t. Therefore, as work increases and time decreases power increases.
Performance is the speed at which work is completed. The rate in this case means per unit time. Performance is calculated by dividing the work done by the time it takes to complete the work.
As already mentioned, performance is the speed of work. Therefore, it can be calculated by dividing the work done by the time. The formula for power is: Where P is the power, W is the work done, and t is the time required.
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Which energy transformation takes place when a firecracker explodes
Answer: Chemical energy to kinetic energy, heat energy, sound energy and light energy.
Explanation: The crackers are made up of gunpowder which is a chemical substance. When this gunpowder powder burns it produces smoke and hot gases (generation of heat and light energy) which create high pressure inside the can and blows the can open, and make all the tiny particles of powder blow out and chemical energy is converted to kinetic energy.
It makes the air to push outward and when it collapses back, it leads to generation of sound. So the chemical energy stored in gunpowder gets converted to sound.
A rocket starts from rest and moves upward from the surface of the earth. For the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward.
(a) What is the height of the rocket above the surface of the earth at t = 10.0 s?
b) What is the speed of the rocket when it is 325 m above the surface of the earth?
The height and speed of a rocket that starts from rest and undergoes variable acceleration can be found by integrating the acceleration function to obtain velocity and position as functions of time, and then solving for the specific conditions given in the problem (at t = 10.0 s and when the rocket is 325 m above the Earth's surface).
Explanation:Height and Speed of the RocketThe question involves an upward movement with an acceleration given by a(t) = A - Bt²/2. We are to find the height of the rocket above the surface of the Earth at t = 10.0 s and the speed of the rocket when it is 325 m above the surface of the Earth.
(a) Height of the Rocket at t = 10.0 sTo find the height, we integrate the acceleration equation with respect to time to get the velocity equation and then integrate again to get the position equation. Given the initial conditions that the rocket starts from rest, we can find the height by integrating the acceleration function.
(b) Speed of the Rocket at 325 m Above SurfaceTo find the speed at a certain height, we need to use conservation of energy or integrate the acceleration function to get velocity as a function of time and then solve for the time at which the rocket reaches 325 m. Once the time is known, it can be substituted back into the velocity function to find the speed of the rocket at that height.
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Which cools faster, land or water? Give a suitable reason for your answer.
Answer: Land cools faster than water
Reason: Water has high specific heat capacity, so it absorbs huge amount of heat energy to increase comparatively small amount of temperature. Loosing a large amount of heat requires more time, so water takes more time to cool down.
what is the deffination of "The spinning of Earth on its axis"
It takes Earth about 24 hours to rotate once on its axis. The movement of one object around another object is called revolution. ... Earth's path as it revolves around the sun is called its orbit. Earth's orbit is a slightly elongated circle, or ellipse.
People are most likely to be obedient to rules that______.
A. are set up by people in authority.
B. requires personal effort and interest.
C. benefit the common good of others.
D. benefit only themselves.
I would like to believe that people are most likely to be obedient to rules that benefit the common good of others (C).
Sadly, I don't.
Perhaps I've become cynical because of my age. But, without seeing any psychological analysis or survey data on the subject, my opinion is that people are more likely to be obedient to rules that benefit only themselves (D).
People are most likely to be obedient to rules that benefit only themselves. This is because in the end, everyone is selfish by nature.
Answer: D. benefit only themselves
shoutout to: the AL2006 above, who answered first
none; live
During constructive interference two waves travel through the same medium and the effects of the first wave are ___ the effects of the second wave
Answer:
During constructive interference occurs at any location along the medium where two inferring waves are in the same direction. In this case both waves have upward displacement. Consequently the medium has an upward displacement has that is greater than the displacement of inferring pulses.
Which of the following shows a car that is increasing in speed
Why doesn't a jar completely full of water evaporate?
A. Water only evaporates when it boils
B. There is no air for it to evaporate into.
C. Water cannot evaporate in a container.
D. Evaporation requires an exchange of gases.
Eventually, the water will all evaporate in this way. The energy which is lost as the particles evaporate is replaced from the surroundings. As the molecules in the water jostle with each other, new molecules will gain enough energy to escape from the surface.
Answer: b: "There is no air for it to evaporate into."
Explanation: If the jar is closed, and filled with water (and it is not heated or nothing like that) the system doesn't suffer any change in his extensive properties nor intensive properties. Now, suppose that there is some energy applied to the water, and it wants to evaporate, this would imply a change in the volume (the volume of the vapor is bigger than the volume of the liquid water) then you will need some free space to evaporate a fraction of water, but there is no free space (the jar is completely filled with water and closed) so there is no space to evaporation. If you give enough energy to the jar, it eventually will break to release this energy.
Then the right answer is b: "There is no air for it to evaporate into."
Which statement illustrates Newton's first law? Select one: a. A stone will not move unless something pushes or pulls it. b. A ball rolling across the floor eventually slows down. c. As a car comes to a stop, the passengers continue to move forward. d. All of the above
Answer: d, All of the above.
It states that "Every object will remain at rest or uniform motion unless compelled to change its state by the action of an external force".
All the choices a, b, c and d are explaining the newtons I law and proving above statement.
how are the magnets able to have zero resistance
Magnets can have zero resistance due to the properties of superconductors. These materials exhibit zero electrical resistance and perfect diamagnetism at very low temperatures, a phenomenon known as the Meissner effect. Consequently, the magnetic field within a superconductor is zero, and once a current is established, it will persist without any applied voltage source.
Explanation:Magnets are capable of having zero resistance due to the properties of superconductors. Superconductors exhibit zero electrical resistance and perfect diamagnetism when cooled down to very low critical temperatures. This expulsion of all magnetic fields results in a net magnetic field of zero within the superconductor, even in the presence of an applied magnetic field, known as the Meissner effect.
An interesting consequence of this zero resistance is that once a current is established in a superconductor, it will persist without any applied voltage source. Furthermore, with a magnetic object, each surface you can imagine that encloses all or part of the magnet ultimately has zero net flux of magnetic field lines flowing through the surface. Just as many outward-flowing lines from the magnet's north pole pass through the surface as inward-flowing lines from the south pole of the magnet.
In superconductors, resistance disappearing is not the only intriguing phenomenon. The exclusion of magnetic fields, which is another manifestation of the Meissner effect, occurs as well. The forces on these currents tend to cancel, making the magnetic drag almost zero.
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Superconductivity, a state achieved at very low temperatures, allows magnets to have zero resistance and to expel all magnetic fields - a phenomenon known as the Meissner effect. In this state, a current persists without a needed voltage source. This property has practical applications such as in the technology used to levitate high-speed trains.
Explanation:In order for magnets to have zero resistance, they have to achieve a state known as superconductivity. Superconductivity is a phenomenon that occurs in some materials when they are cooled to very low critical temperatures. In this state, there is a resistance of exactly zero and all magnetic fields are expelled. This lack of resistance means that, once a current is established in a superconductor, it persists without an applied voltage source.
This is closely linked to something known as the Meissner effect, whereby superconductors expel all magnetic field lines. This perfect diamagnetism means that the net magnetic field within a superconductor is always zero — any magnetic field lines that pass through a superconducting sample when it is in its normal state are expelled once the sample becomes superconducting.
The practical applications of these properties are considerable. For instance, high-speed trains have been developed that levitate on strong superconducting magnets, exploiting the fact that a light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor.
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What is the role of the midbrain, and which part of the midbrain is important for arousing the forebrain?
Answer:
The fore-brain consists of the cerebrum, thalamus, and hypothalamus. Mid-brain relays information between fore-brain and hind-brain. Mid-brain plays important role in developing motor functions like eye movement, auditory functions and visual processing. The crus cerebri connects the cerebral hemispheres to the cerebellum, contains a portion having a network of neurons that is responsible for arousal and alertness.
An object with equal amounts of positive and negative charge is called ______
An object with equal amounts of positive and negative charge is called neutral object.
What is electric charge?"Electric Charge is a property of subatomic particles that causes them to experience a force when they are placed in an electric and magnetic field." Positive and negative electric charges are commonly carried by charge carriers protons and electrons.
A scalar quantity is an electric charge. A vector quantity, in addition to having a magnitude and a direction, must also obey the laws of vector addition, such as the triangle law of vector addition and the parallelogram law of vector addition; only then is the quantity said to be a vector quantity.
Subatomic particles or matter particles are examples of charge types:
Protons have a positive charge.Electrons have a negative charge.Neutrons carry no charge.Any object with equal amounts of positive and negative charge is called neutral object.
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Density (D) is defined by mass/volume . Which item decreases as heat is applied?
V
D
M
Answer;
density = (mass/volume)
here density varies with respect to change in volume by assuming constant volume.
changing the temperature, change in density. most matter increases in volume when it gets hotter. Example, when an iron rod is heated, it will get longer and its density will decrease. This happens because the mass of the rod constant, but volume increase.
What happens to the volume of an ideal gas as temperature drops
Based on the ideal gas equation, the pressure (P), volume (V) and temperature (T) corresponding to n moles of an ideal gas are related as:
PV = nRT
where R = gas constant
Under conditions of constant pressure and number of moles:
The volume is directly proportional to the pressure. Therefore, as the temperature drops the volume will also decrease.
V α T
This is also known as the Charles Law.
A net force acts on a mass of 8.00 kg causing it to move from rest to a speed of 10.0 m/s in a time of 5.00 s. The bet force must have a magnitude of
A.8.00n
B.16.0n
C.40.0n
D.80.0n
Given data
mass (m) =8 Kg ,
speed (v) =10 m/s ,
time (t) = 5 s
determine magnitude of force (Fnet) = ?
we knoe that
Fnet = m.a
= 8 × (v/t) since a = v/t
= 8 × (10/5)
= 16 N
Magnitude of net force is 16 N
Explain How you can determine if a chemical reaction represents a single displacement reaction or a double displacement reaction
To determine if a chemical reaction represents a single displacement reaction or a double displacement reaction, examine the reactants and products. Single displacement reactions involve the replacement of an element in a compound, while double displacement reactions involve the exchange of ions between two compounds.
Explanation:In order to determine if a chemical reaction represents a single displacement reaction or a double displacement reaction, you need to examine the reactants and products in the reaction equation.
For a single displacement reaction, one element is replaced by another element in a compound. This can occur when a more reactive element displaces a less reactive element. An example of a single displacement reaction is the reaction between zinc metal and hydrochloric acid:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)
On the other hand, a double displacement reaction involves the exchange of ions between two compounds. This can result in the formation of a precipitate or a gas. An example of a double displacement reaction is the reaction between sodium sulfate and barium chloride:
Na2SO4(aq) + BaCl2(aq) → 2NaCl(aq) + BaSO4(s)
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A chemical change
A.
destroys matter.
B.
changes matter from one form to another.
C.
creates matter.
D.
does not change matter in any way.
the answer is B. hope this helps
a person using a machine applies a force of 100 newton's over a distance of 10 Meters to raise a 500 n object 1.5 meters what is the work input?
Answer:
Work done by the machine (W) = 500 × 1.5 = 750 J
Work supplied to the machine (W) = 100 × 10 = 1000 J
Here, work supplied to the machine is input work = 1000 J
Earthquakes and volcanic eruptions occur both on land and in water. Earthquakes and volcanic eruptions most often occur *
1 point
A.at transform boundary
B on large pieces of land
C in large bodies of water
D in regions near the equator
( if anyone has answers to the whole test that would be really helpfull)
D in regions near the equator
Describe the differences and similarities between an electromotor and a generator.
Differences:
An electrical motor converts electrical energy into mechanical energy,where as a generator converts mechanical energy into electrical energy.
The principle of a electric motor if there is a change of the magnetic field across a conductor electrons are forced to move in a direction perpendicular to the direction of the magnetic field,where as in a generator if a charge is moving in a magnetic field, a force acts on the charge in a direction perpendicular to both the velocity of the charge and the magnetic field.
similarities:
Both electric motor and generator work on the magnetic effects of electric current.
Both have the armatures to rotate the loop.
An electromotor and generator have similar structures involving wire loops and magnetic fields. However, an electromotor converts electrical energy to mechanical, while a generator performs the opposite conversion - mechanical to electrical.
Explanation:Both an electromotor and a generator have similar structures and both involve interactions between magnetic fields and current-carrying wires to function. However, they perform opposite energy conversions.
An electromotor, or electric motor, converts electrical energy into mechanical energy. This operates by passing an electrical current through wire loops within a magnetic field. The magnetic field exerts a force on the current-carrying wires, resulting in a rotational motion.
On the other hand, a generator converts mechanical energy into electrical energy. It functions by rotating wire loops within a magnetic field, which causes an alternating current to form. Sources of the mechanical energy that rotates the loops can include hydropower, wind energy, or the release of steam in a turbine system.
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During what Era did Pangaea break apart? a. Cenozoic c. Mesozoic b. Precambrian d. Paleozoic
i think it's Precambrian
A spring, when compressed 0.20 m from the equilibrium position, stores 24 J. What is the value of the spring constant
Given that:
spring compressed ( x) = 0.2 m
Work (W) = 24 J
determine , spring constant (x)=?
We know hat ,
Work (W) = (1/2). k.x²
24 = 1/2 ( k × 0.2²)
48 = k × 0.2²
k = 1200 N/m
Suppose you do work on an object from rest to a certain speed v. Why does it take four times the amount of work to increase its speed from rest to a speed of 2v?
As the kinetic energy of the object becomes 4 times when speed of it changes from v to 2v, s it takes four times the amount of work to increase its speed from rest to a speed of 2v.
What is kinetic energy?According to the definition of kinetic energy in physics, it is the amount of work that an item may accomplish while in motion.
As a scalar quantity, kinetic energy can only be fully defined by its magnitude.
Let the mass of the object is = m.
When its speed is v, kinetic energy of it: E₁ = 1/2 × mv²
When its speed is 2v, kinetic energy of it: E₂ = 1/2 × m(2v)²
= 4 × 1/2 × mv²
= 4 E₁
As the kinetic energy of the object becomes 4 times when speed of it changes from v to 2v, s it takes four times the amount of work to increase its speed from rest to a speed of 2v.
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A U-shaped valley is most often formed by
A. volcanoes
B. oceans waves
C. plate movement
D. glacial movement
formed by the process of glaciation.
If a gas has a gage pressure or 156 kPa, it’s absolute pressure is approximately
A. 56 kPa.
B. 100 kPa.
C. 256 kPa.
D. 300 kPa.
Answer: C
Gauge pressure = 156 kPa ,
What is absolute pressure =?
We know that,
absolute pressure = gauge pressure + atmospheric pressure
Pabs = Pgauge + Patm
= 156 + 101.3 (since atm.pr. = 101.3 Kpa)
= 257.3 KPa absoulte
approximately = 256 KPa absolue
What is the average velocity of a car that travels 50 kilometers due west in 0.50 hour?
Average Velocity= displacement/time Av=50/0.50 Av=100
energy from fast moving particles that will produce heat is
Thermal energy comes from moving particles
By making particles go faster, you increase the kinetic energy creating heat.