We have that we use dissolving, filtration and distillation to separate sand from salt
Dissolving,Filtration DistillationSand can be separated adding water to the mixture upon dissolving we filter to get the salt solution out of the sand
Then we distill by boil salt solutions at vaporization temperature of water to get salt back the water and salt solution to get salt back
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Samantha is viewing a real image formed by a lens of a diamond ring. Which must be true about the image?
It could not be captured on film.
It is larger than the actual ring.
It was formed by a concave lens.
It is upside down.
Answer: It is upside down
Explanation:
Samantha is viewing a real image through a diamond ring, the image would appear to be upside down because we can determine that after reflection of rays, each ray is travelling in a certain.All the reflected rays after reflection are intersecting each other a point( in other words converging at a single point )where the image is formed.
Note: real images formed are always inverted
What is power the quotient of?
Question 7 options:
work and time
speed and distance
work and distance
speed and energy
Answer:
Power the quotient of work and time.
Explanation:
Power is the quotient of work and time. It is also defined as the rate at which any work is done. Work done is equal to the product of force and the displacement. The mathematical formula of power is given by :
[tex]P=\dfrac{W}{t}[/tex]
The SI unit in which power is measured is watts. It is equivalent to Joules per second.Hence, the correct option is (a).
Drag the tiles to the correct boxes to complete the pairs.
Match each form of energy to its description.
Answer: The image below has the correct answers
when you boil water in a pot on the stove, which heats faster, the metal or the water
Since water has a higher specific heat capacity than the metal, the metal will heat up first before the water.
Specific heat capacityThe specific heat capacity is the amount of heat required to raise the temperature of 1 Kg of a substance by 1K. The heat capacity of water is far higher than the heat capacity of the matal.
The substance with a lower heat capacity will heat up first hence the metal will heat up first before thw water.
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The metal pot on a stove heats up faster than the water due to its lower specific heat. Therefore, it takes less energy to increase its temperature. However, both will eventually reach the same temperature due to heat transfer in the closed system.
Explanation:When you boil water in a pot on the stove, the metal pot heats up faster than the water. This is because of the different specific heat values of water and metal. The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. Water has a higher specific heat (about 4.2 J/g°C) than most metals, which means it takes more energy to increase its temperature. On the contrary, metals such as aluminum have a lower specific heat, typically less than 1 J/g°C. Hence, they require less energy to heat up and do so more quickly.
However, the pot and the water will eventually reach a state of equilibrium, where their temperatures are the same. This is because in a closed system, heat will always flow from a higher temperature body to a lower-temperature one until the temperatures are equal.
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what causes the change from day to night?
Which example is NOT a part of the electromagnetic spectrum?
A)
microwaves
B)
radio waves
C)
electricity
D)
purple light
Explanation :
The electromagnetic spectrum shows the wavelength or frequency range of any wave.
It consists of the following waves :
Gamma rays (short wavelength or high frequency)X-raysUltraviolet raysVisible lightInfrared raysMicrowaves Radio waves (long wavelength or short frequency)So, the purple light is not the part of the electromagnetic spectrum.
Hence, the correct option is (c).
Electricity is NOT a part of electromagnetic spectrum.
An electromagnetic spectrum contains electromagnetic radiations arranged according to frequencies and wavelength.
Further Explanation Electromagnetic waves Electromagnetic waves are types of waves that do not require a material medium for transmission. These waves are mostly transverse in nature, which means the direction of transmission is perpendicular to the direction of vibration of particles. They include, light waves, radio waves, x-rays, infra-red, etc. Electromagnetic spectrum An electromagnetic wave shows electromagnetic waves arranged according to frequencies and wavelength. Electromagnetic spectrum contains electromagnetic waves: Gamma rays, x-rays, Ultraviolet, Visible light, infra-red, microwaves, and radio waves. The electromagnetic spectrum is divided into various sections based on wavelength, with gamma rays having the shortest wavelength and radio waves having the longest wavelength. The part of the electromagnetic spectrum that we can see using our naked eyes is called the visible light spectrum. In order of frequency, the radio waves have the lowest frequency while gamma rays have the largest frequency. General characteristics of electromagnetic waves They travel with the speed of light (3.0 x 10^8 m/s) They possess energy that is given by; E =hf, where h is the plank’s constant and f is the frequency. They are transverse in nature, and therefore, the wavelength is measured between successful crests or troughs. They can travel through vacuum
Keywords: Electromagnetic spectrum, electromagnetic waves.
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Level: High school
Subject: Physics
Topic: Electromagnetic spectrum
Do other planets in our solar system have tilts? If so, How do they affect the planet?
A train travels 86 kilometers in 1 hours, and then 98 kilometers in 1 hours. What is its average speed?
Mechanical waves are classified according to a. their size. b. their shape. c. how they move. d. their source. Please select the best answer from the choices provided A B C D
jack and his family go to the movies first they eat lunch at 1:30 pm it takes 40 minutes to eat then the movie then they drive 25 minutes to get to the movie theater theater at what time did the get to the theather
Answer:
2:25
Explanation:
Define circuit training
Final answer:
Circuit training refers to the design and function of electric circuits, which utilize components like resistors, capacitors, and diodes to perform specific tasks, from simple to complex applications in technology.
Explanation:
Circuit training is a sequence of exercises, completed one after another, with minimal rest in between. In contrast to the fitness concept of circuit training, the term you might be looking for within a physics context is circuit design or electric circuits. An electric circuit is a collection of electrical components such as resistors, capacitors, and diodes that are connected to perform a specific task. A simple example is a circuit in a flashlight, while a complex example would be the circuits used in supercomputers.
Circuits are integral to the functioning of many modern technologies, from motors and cell phones to computers. In the 1980s, an electrical engineer would have used principles of electric circuits to design the first circuit board with built-in self-testing features. Meanwhile, circuit construction tools like the PhET Explorations Circuit Construction Kit allow students and enthusiasts to experiment virtually with circuits, enhancing their understanding of these systems.
An RC circuit, specifically, is comprised of a resistor (R) and a capacitor (C), with the capacitor being a component that stores electric charge. Understanding electric circuits' design and function is essential for creating various electrical applications that are part of our daily lives.
Photosynthesis transforms molecules of water and carbon dioxide into Molecules of?
In the ___________ biome, plants typically have deep roots, reduced leaves, and photosynthetic stems.
What is the name of the system of measurement used by most countries around the world?
A road is built leading to a farm in a wooded area. What is an unlikely effect of the road? A increased temperature from traffic
B increased smog from traffic
C increased flooding
D an increase in temperature of nearby streams
Answer : Option D) an increase in temperature of nearby streams.
Explanation : When the road is build leading to a farm in a wooded area, it unlikely that there will be increase in temperature of the nearby streams as there is no direct relation of increasing temperature of the stream and building of the road. As all other options are likely to happen when the road will be built.
Answer:
D an increase in temperature of nearby streams
Explanation:
it should be D increase of streams and temperature a road built in a wooded area wood can hot real quickly and things by it
so you're answer is d
What is a group in the periodic table of elements?
Question 6 options:
the elements that have the same atomic number
the elements that have similar densities and atomic sizes
the elements that are in the same column of the periodic table of elements
the elements that are in the same row on the periodic table of elements
Amy wants to know whether or not an item will float when placed in a fluid. Which of the comparisons below, when true, will mean that the item will float?
A. The object is made of stone or metal, which always sink.
B. The force of gravity is stronger than the buoyant force.
C. The buoyant force is stronger than the force of gravity.
D. The mass of the item is greater than its gravity.
Which of the following types of electromagnetic radiation has the shortest frequency? (2 points) Infrared waves Microwaves Ultraviolet waves X-rays
In order from shortest to longest frequency, the electromagnetic waves can be ranked :
1. X-rays
2. Ultraviolet
3. Infrared
4. Microwave
X-rays has the shortest frequency which ranges between 30 petahertz to 30 exahertz. X-rays have the smallest wavelengths at 0.01-10 nanometers. Its energy ranges between 100eV to 100keV.
five students measured the same kind with the ruler shown below the results reported by the students were as follows 4.51 cm , 4.55cm, 4.5cm and 4.6 cm even though you cannot see the line they measured which of the recorded measurements is not correct acorriding to the precision of the ruler
what is the pascal principle
Pascal's principle states that a change in pressure in an enclosed fluid is transmitted equally throughout the entire fluid. This is the basis for the functioning of hydraulic systems, like car brakes, where it's used to amplify force.
Explanation:Pascal's Principle Explained
Pascal's principle, also known as Pascal's law, states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container. This fundamental concept in fluid mechanics is crucial because it allows us to better understand and predict the behavior of fluids. For instance, the principle is applied in hydraulic systems, like those found in car brakes, allowing a small force applied at one point to be multiplied and result in a larger force at another point.
According to Pascal's principle, if you apply pressure to any part of a confined fluid, the pressure increase is felt equally at every other point in the container, and also against the walls of the container. This means that the total pressure at any point in the fluid is the sum of the initial pressure and the applied pressure. This principle, formulated by Blaise Pascal, a French mathematician and physicist, is also the basis for hydraulic presses, which enable lifting heavy objects with relatively little applied force.
what are the 30 commands in rotc, airforce
The 30 commands in AFJROTC are key instructions taught to cadets for performing precise and unified movements. These commands include 'Fall In,' 'Present Arms,' 'Forward March,' and 'Fall Out' etc. They are essential in developing discipline and teamwork among cadets.
30 Commands of AFJROTC
In Air Force Junior Reserve Officer Training Corps (AFJROTC), cadets are taught various drill commands to ensure precise and unified movements. Below are the 30 commands used in AFJROTC:
Fall InOpen Ranks, MarchReady, FrontClose Ranks, MarchPresent ArmsOrder ArmsParade RestAttentionLeft FaceAbout FaceForward MarchRight Flank, MarchLeft Flank, MarchColumn Right, MarchForward, MarchTo the Rear, MarchHaltLeft Step, MarchRight Step, MarchHalf Step, MarchForward, MarchAbout, FaceEyes, RightReady, FrontColumn Right, MarchForward, MarchChange Step, MarchColumn Left, MarchForward, MarchFall OutThese commands are designed to develop discipline, coordination, and team spirit among cadets, which are essential qualities for future military officers.
Which of the following are true statements? A. Like charges repel B. Unlike charges repel C. Unlike charges attract or D. Charged objects attract neutral object due to induction
Answer: The correct answers are (A) and (C).
Explanation:
The expression from electrostatic force is as follows;
[tex]F=\frac{kq_{1}q_{1}}{r^{2} }[/tex]
Here, F is the electrostatic force, k is constant, r is the distance between the charges and [tex]q_{1},q_{1}[/tex] are the charges.
The electrostatic force follows inverse square law. It is inversely proportional to the square of the distance between the charges. It is directly proportional to the product of the charges.
Like charges repel each other. There is a force of electrostatic repulsion between the like charges. Unlike charges attract each other. There is a force of electrostatic attraction between unlike charges.
The charges are induced on the neutral object when it is placed nearby the charged object without actually touching it.
Therefore, the true statements from the given options are as follows;
Like charges repel.
Unlike charges attract.
Answer:
A. Like charges repel
C. Unlike charges attract
Explanation:
Can someone with an IQ score of 120 be gifted? Based on psychological thought, explain why or why not and give an example. ILL MARK U BRAINLIEST
Someone with an IQ score of 120 can be moderately gifted. Though people with a 120 IQ do not qualify for gifted programs, it has been shown that they aren't any less likely to succeed than people with an IQ of 180. For example, those with IQs in the 120-130 range are more likely to succeed at leadership roles, while those with higher IQs might not be best suited for those positions, but are instead gifted in other areas where people with 120 IQs are not.
We claim that momentum is conserved. Yet most moving objects eventually slow down and stop.Can you explain.
you slide a hockey puck across the ice in a hockey rink the puck gradually slows down as it moves how does newtons first law explain the motion of the puck
Answer:
It explains it becuase it was acted on by an outside force being the ice and friction.
Explanation:
Like stated above an object in motion stays in motion unless acted upon by an outside force. In this scenaro it was the ice and the puck causing friction and it finally stopping.
A cart pulled by a force of 250N at an angle of 35 degrees above the horizontal. The cart accelerates at 1.4 m/s^2. The mass of the cart, to the nearest whole number, is?
What's a good sentence describing my roller coaster
Final answer:
A roller coaster utilizes the principles of physics, specifically potential and kinetic energy, to create thrilling rides.
Explanation:
A roller coaster is a thrilling ride that is designed to take advantage of the principles of physics. One important concept that comes into play is potential energy. At the start of the ride, the roller coaster is lifted up to the highest point, storing potential energy. As the coaster moves down the track, the potential energy is converted into kinetic energy, causing the coaster to gain speed. This transfer between potential and kinetic energy is what makes roller coasters exciting.
A scooter is moving with a speed of 18 m/s. Its mass is 20 kg. What is the magnitude of its momentum?
Arthur is testing how well various types of disinfectants can kill E. coli bacteria. He starts with a Petri dish that is covered with E. coli. He puts exactly one milliliter of each different disinfectant at a different location on the Petri dish. If a disinfectant works, it will eliminate the bacteria in the area in which it was placed. Two days later, Arthur will measure the amount of bacteria that has been cleared out by each disinfectant. Which of the following is a variable in this experiment? A. the type of disinfectant used B. the type of bacteria used C. the Petri dish used D. the length of time that the disinfectant is used
Answer:
the answer is a, the type of disinfectant used.
Explanation:
this was the answer i put it and it was right
Which formula can be used to solve problems related to the first law of thermodynamics?
Q = ΔU + W
Q is the exchanged heat.
ΔU is the total change in the internal energy of a system.
W is the work done by or on the system.
The statement of the First Law is Thermodynamics is: “energy can be converted
from one form to another with the interaction of heat, work and internal
energy, but it cannot be created nor destroyed, under any circumstances”.
Answer: The formula used to solve the problems related to first law of thermodynamics is [tex]\Delta U=Q+W[/tex]
Explanation:
First law of thermodynamics states that the total energy of the system remains conserved. Energy can neither be destroyed, nor be created but it can only be transformed into one form to another.
Its implication is any change in the internal energy will be either due to heat energy or work energy.
Mathematically,
[tex]\Delta U=Q+W[/tex]
where, Q = heat energy
W = work energy
[tex]\Delta U[/tex] = Change in internal energy
Sign convention for these energies:
For Q: Heat absorbed will be positive and heat released will be negative.
For W: Work done by the system is negative and work done on the system is positive.
For [tex]\Delta U[/tex]: When negative, internal energy is decreasing and when positive, internal energy is increasing.
Hence, the formula used to solve the problems related to first law of thermodynamics is [tex]\Delta U=Q+W[/tex]