Answer:
Explanation:
Permanent (Bar) Magnet. —-) Electromagnet
They are permanently magnetized. —-) These are temporarily magnetized.
can someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
Pacific and Australia
Explanation:
Convergent boundary is the area where two plates collide.
Means the direction of arrows should be opposite and towards each other .
Answer:
Pacific and Australian
Explanation:
Convergent boundaries are where two plates come together. Either tall mountains are formed on land or deep trenches in the ocean. There are deep ocean trenches where the Pacific and Australian plate converge.
If the volume of a container of gas remains constant, what will happen to the pressure of a gas if you increase the temperature?
Answer:
This example of the effect of volume on the pressure of a given amount of a confined gas is true in general. Decreasing the volume of a contained gas will increase its pressure, and increasing its volume will decrease its pressure.
Explanation:
Hope it helps
What do we call the moral law we are born with that God placed in our hearts?
1.what would happen if hypothetically i travelled more than the speed of light?
2.why are most objects in the universe roundish
3.why do the laws of physics on macro level differ from those on the quantum level.
4.How do light travel in space if there is no medium?
if the momentum of the erth is used to catapult space missions towards other planets, does it mean that if there was a humongous planet, its momentum could catapult me to a larger range ?
5.whats beyond the observable universe?
6.why cant we use gravity of an object in space and create an artificial atmosphere. how could that be done?
If you have more questions you can tell me in comments.
Answer:
Explanation:
I'm assuming these are personal questions? Because a few of your questions are incorrect. I'll do my best to explain the ones I do know.
1.) Nobody actually knows what would happen if you travel faster than light. Einstein showed this was impossible due to it requiring an "infinite" amount of energy. My personal belief is that time itself stops existing. Your guess is as good as mine, nobody really knows.
2.) Most objects in the universe are round mostly because of gravity and density. All objects in the universe strive for minimum energy states. A sphere has a minimum gravitational potential than other geometry.
3.) Again, this is another one where nobody knows "why." On the macroscopic, there is classical mechanics. Then once you go into the microscopic world, you enter the realm of quantum mechanics. It's not that the "laws" are different. There is still conservation of momentum and such. Its just that they're expressed differently.
4.) The explanation for this is most likely due to light being composed of particles, photons. Sound cant travel if there is no medium, because sound is purely a wave. There is no such thing as a sound particle, at least not a physical one. You can think of light as traveling photons carrying energy. That's the particle interpretation of light.
Space missions do not use the Earth's momentum to catapult things in space. Each mass in the universe creates a corresponding gravitational field. So, planets create gravitational fields. The current theory of gravity is Einstein's theory of General Relativity, which states that energy and momentum curve spacetime. Special relativity proved the energy/mass equivalence. General relativity predicts that spacetime will curve around large masses. You can think of planets bending spacetime like a bowling ball in the center of a trampoline. This process in reality is 3-D and not 2-D like the trampoline analogy. But, the entire process of "catapulting" is using these gravitational "wells" of spacetime to minimize fuel and travel time.
5.) We don't know what beyond the observable universe. From the Big Bang, the universe only existed for about 13 billion years. So, light only traveled for 13 billion years long. We cant see passed the observable universe if the light hasn't even reached us yet. The reason the size of the observable universe is larger than 13 billion light years, is because we predict the universe is expanding faster than the speed of light. Special relativity demands that mass cannot go faster than the light, but it never restricted spacetime itself.
6.) Planets use gravity to keep their atmosphere. We could theoretically place a massive object on a planet and increase the gravitational field. But that is really impractical. We can't "create" gravity because we dont know if gravity is a particle. We only think of it at the moment as a non-physical wave, a ripple in spacetime. I have personal thought experiments in how we could terraform a planet, and create atmospheres. But that goes into electromagnetism, and not gravity.
PLEASE HELP ME WITH THIS RIDDLE
Both of my parents gave me 250$ each and now I have 500$ and then I bought a phone for 450$ and now I have 50 dollars left so i gave my friend 30 dollars because he asked. Now I have 20$ left. Since I have 20$ left I’ll give my parents 10$ each and now they want from me 240$ each and in total I have 480$ to give to my parents but my friend gave my 30$ dollars back that I gave him and now I have 510$ where did that 10$ in the 510$ come from since I only got 500$ from my parents.
The problem is that at the end, you owe $480, so what you have is -$480 (instead of the $480 that is written on the riddle). And when your friend gives back the $30, you will owe $450, meaning that you have
-$450.
Where is the problem in the math?
Let's follow what you say with the proper equations.
Both your parents gave you $250, so now you have:
$250 + $250 = $500
Then you bought a phone for $450, so now you have:
$500 - $450 = $50
Then you gave $30 to your friend, so now you have:
$50 - $30 = $20
Then you gave $10 to each one of your parents, so now you have:
$20 - $10 - $10 = $0.
Now, each one of your parents wants the $240 ($250 - $10) back.
So you OWE $480 (you do not have $480, you owe it, here is the problem with the riddle reasoning).
It will be represented with a negative number:
-$480
When your friend gives you the $30 back, you add it to the above value (meaning that you give it to your parents):
-$480 + $30 = -$450
Now you owe $450 to your parents, which is the cost of the cellphone that you bought.
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Newton's discovery concerning how fast an object will change speed is the:
1st Law
3rd Law
2nd Law
Universal Gravitation
Answer:
I think its the second law..
Explanation:
Answer:
its the second law.
hope this helps! :)
Hold a pencil at arm's length. Focus on it with one eye and then the other. Note that the apparent position of your pencil shifts with respect to the background. Now hold your pencil closer to your face and repeat. The apparent position of your pencil shifts even more. This effect is known as the
Based on what we know, we can confirm that this effect is often referred to as the Parallax effect.
What is the Parallax Effect?This effect explains the differences that we see when performing this experiment with the pencil. It attempts to explain the difference in the apparent position that we see when viewing the pencil from differing lines of sight. This has to do with the change in the angle we are viewing from when we switch eyes.
Therefore, we can confirm that this effect is often referred to as the Parallax effect.
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How does an object get its potential energy, give an example?
Answer:
example would be a rock sitting on a cliff
Explanation:
when work is done on object energy is transferred to the object and it gains gravitational potential energy.
1.
A cyclist is traveling at 12.0 m/s when he applies the brakes and begins to slow. After
4.5 s the cyclist has slowed to 3.0 m/s. What was the cyclist's (a) acceleration (assume it
was constant), and (b) the distance traveled in this time?
A positive charge of 0.00033 C is 25 m from a negative charge of 0.00017 C. What is the force of one of the charges due to the other charge in units of Newtons
The electrostatic force between the two charges is attractive force and the magnitude of this electrostatic force is 0.808 N.
Electrostatic force between the two chargesThe electrostatic force between the two charges is calculated by applying Coulombs' law as follows;
F = kq₁q₂/r²
where;
k is Coulomb's constantq₁ and q₂ are first and second charge respectivelyr is the distance of separationF = (9 x 10⁹ x 0.00033 x 0.00017)/(25²)
F = 0.808 N
Thus, the force of one of the charges due to the other charge is 0.808 N.
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can someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
Point number 3.
Explanation:
Volcanism can be studied to found out evidence of the internal structure of the Earth.
Answer:
Volcanism
Explanation:
Volcanism refers to study about the creation of volcanos.We know the earth's inner side is filled of magma which gets out through volcanos.So volcanism should be learntThe sum of the kinetic and potential energies of a system of objects is conserved: Group of answer choices only when no external force acts on the objects only when the objects move along closed paths only when the work done by the resultant external force is zero none of the above
The sum of the kinetic and potential energies of a system of objects is conserved only when no external force acts on the objects.
Conservation of mechanical energyThe principle of conservation of mechanical energy states that the total mechanical energy of an isolated system (absence of external force) is always constant.
M.A = P.E + K.E
where;
P.E is potential energy
K.E is kinetic energy
Thus, the sum of the kinetic and potential energies of a system of objects is conserved only when no external force acts on the objects.
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A 3 x 10^-6 C charge is 5m away from a -2x 10^-6 C charge A. Attractive because one is positive the other one is negative B. Determine the magnitude of the electrostatic force acting between them.
Answer:
0.0021576N
Explanation:
F=(k)(q1q2/r^2)
F=(8.99×10^9)(3×10^-6)(2×10^-6)/(5^2)
F=0.0021576N
How is a feeling of harmonic tension and forward motion created in the exposition of a sonata form
We can confirm that the feeling of harmonic tension and forward motion can be created in the sonata through the use of the conflict of tonalities between the themes.
What is harmonic tension?Harmonic tension is a musical term to describe "tension" generated by conflicting chords and chord progressions. This adds a level of depth and atmosphere to the performance and can be achieved through the method described above.
Therefore, we can confirm that the feeling of harmonic tension and forward motion can be created in the sonata through the use of the conflict of tonalities between the themes.
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A projectile is fired from an airless world with a speed Vescape. What is the total energy (Etot=KE−GMm/r) of the projectile?
Answer:
Etot= Zero
Explanation:
The total energy would be zero because the total potential energy and total kinetic energy would be zero
Briefly explain why experiments having faulty design or inconsistent data are problems for scientists. List several reasons
Answer:
There are several reasons that experiments with faulty designs or with inconsistent data are problematic for scientists. A person can make one of those problems if he or she were to poorly measure what they are studying. For example, someone measured the mass of a book correctly to be 2 pounds, and someone else measured it mistakenly to be 1 pound. Another way that a person can make problems with faulty designs and inconsistent data is the lack of accuracy and precision. This could happen when someone can have the value of 10 from a correct data set of 9, 10, 10, 11, and 12, and someone else can have the value of 10 from an incorrect data set of 5, 7, 19, 15, and 10. The first data set has a lot more precision that the second data set. Another example would be: Someone could have the value of 10 from a correct data set of 9, and 11. Someone else can have the value of 10, but have the incorrect data of 7, and 15. The first set has more accuracy than the second set. A third reason that faulty designed experiments and inconsistent data can happen is the flawed experiments. For flawed experiments to happen, they may be uncontrolled, untrustworthy conclusions, or being inconsistent with other tests performed. For the last reason that they can happen, there can be bias. this could happen when the samples are too small, not randomly selected samples, and some outliers are present.
It is best to say that efficient plumbing _______. a. reduces water pollution by using less water b. reduces water pollution by using cleaner water c. increases water pollution by using more water d. reduces water pollution by using dirty water please select the best answer from the choices provided a b c d
It is best to say that efficient plumbing reduces water pollution by using less water. Option a is correct.
What is plumbing?Plumbing is a water conveyance system that transports water for a variety of uses. It transports water from one location to another via pipes, valves, and tubes.
It has the ability to transport water from a large reservoir to several areas. It is required for agricultural irrigation, domestic cleanliness, and the provision of potable drinking water.
Filters are often used in plumbing systems to remove pollutants from the water. An effective plumbing system lowers water pollution by using less water
Since it allows for adequate flow of water for usage and can automatically close or turn up as needed, preventing the loss of clean water and therefore preventing pollution.
It guarantees that clean water is used in a sustainable manner. efficient plumbing reduces water pollution by using less water.
Hence option a is correct.
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Answer:
B
Explanation:
Select all that are true about halogens: Very reactive Nonr-reactive Period 3 Nonmetals Group 7A
The following are true about Halogens.
They are very reactive, They are non metals,They belong to group 7A They are in period 3What are Halogens?Halogens refer to non metallic elements that are found on group 7A of the periodic table and period 3. Examples of Halogens are chlorine, flourine, iodine, bromine, astatine and so on.
Some of the characteristics of Halogens are;
They form acids when they combined with hydrogen.They are very reactive.They are all fairly toxic.They combine with metals to form salts.They have seven valence electrons in their outer shell.They are electronegative.Therefore, The following are true about Halogens.
They are very reactive, They are non metals, They belong to group 7A They are in period 3.Learn more about Halogens from the link below.
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What is gravity force
The force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.
Answer:
Gravity is the force that keeps everything on the ground instead of it floaating around!
Explanation:
Without gravity, you would be floating round in your house dodging floating objects.
Hope this brings you down to earth!
Have an amazing day!
PLEASE RATE AND MARK BRAINLIEST!! :)
What can you infer about a wave with a short wavelength? Question 5 options: It has a low amplitude. It has a high amplitude. It has a high frequency. It has a low frequency.
Option C is correct. It has a high frequency. Wavelength is inversly proportional to the frequency. For short-wavelength, the frequency will be high.
Describe the connection between wavelength & frequency?Frequency and wavelength have an inverse connection with one another. As a result, the wave with a high frequency should have a short wavelength.
For short-wavelength, the frequency will be high.
Hence Option C is correct. It has a high frequency.
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Answer:
c <33
Explanation:
What happened to North American coastal waters when the great white shark population decreased?
The oyster population increased.
O The clam population increased.
The ray population increased.
The scallop population increased.
Answer:
The Ray Population Increases
Explanation:
This happens because the great white eats bigger animals
Mexico City is located at a lower latitude than Detroit. How do you predict the weather conditions would differ?
A. Mexico City would have higher average temperatures and levels of precipitation.
B. Mexico City would have lower average temperatures and levels of precipitation.
C. Mexico City would have higher average temperatures but lower levels of precipitation.
D. Mexico City would have lower average temperatures but higher levels of precipitation.
Answer:
I think C.
Explanation:
If I'm wrong, please do not hesitate to let me know
a ball of mass 16 kg on the end of a string is spun at a constant speed of 2 m/s in a horizontal circle with a radius of 1m. What is the work done by the centripetal force during one complete revolution
The work done by the centripetal force during om complete revolution is 401.92 J.
Centripetal force is a force that acts on a body undergoing a circular motion and is directed towards the center of the circle in which the body is moving.
To Calculate the work done by the centripetal force during one complete revolution, we use the formula below.
Formula:
W = (mv²/r)2πrW = 2πmv²................... Equation 1Where:
W = Work done by the centripetal forcem = mass of the ballv = velocity of the ballπ = pieFrom the question,
Given:
m = 16 kgv = 2 m/sπ = 3.14Substitute these values into equation 1
W = 2×3.14×16×2²W = 401.92 JHence, The work done by the centripetal force during om complete revolution is 401.92 J.
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1. Stored energy or energy due to position is known as ____________________ energy
Answer:
Potential energy
Explanation:
goodluck
Answer:
potential energy or gravitational potential energy
A sound wave has a wavelength of 0.450 meters if it’s speed in cold air is 330 meters per second what is the wave’s frequency
Answer:
733.3Hz
Explanation:
V=fx
where V is velocity of sound wave ; 330m/s
f is frequency of sound wave ; unknown
x is wavelength of sound wave; 0.450m
substituting the values
V=fx
330=0.450f
f=733.3
someone please answer this, ill give you brainliest and your getting 100 points.
Answer:
Volcanism
Explanation:
Earth consists of three parts ,UpperMantalcoreThe inner two are. made of lava which is erupted by volcanos
So volcanism is the answerWhich of the following can be studied to find out evidence for the internal structure of the Earth?
O Mountain Building
O Seismic Waves ✓
Seismic waves due to their tendency to travel anywhere on earth ,helps to find out the internal structure of the earth by cracking up the crust and finding out the core of the planet.O Volcanism
O All of the above
Calculate the kinetic energy of a 4 kg object moving at 10 m/s.
Answer:
1/2 * 10 kg) * 5 m/s2. or 125 Joules
Explanation:
Question 2 of 10
Which of the following statements agrees with the second law of
thermodynamics?
O
O A. Energy tends to increase.
O
B. Heat flows spontaneously from cold to hot.
O
O C. Heat cannot ever go from cold to hot.
O
D. Entropy tends to increase.
Answer:
D.Entropy tends to increase.
Explanation:
The second of thermodynamics states that the state of entropy of the entire universe,as an isolate system, will always increase over time
The radius of the earth is 6.37 x 10ºm How fast in meters per second is a tree on the equator moving because of the earth's rotation? How fast is a polar bear at the north
pole?
Answer:
yea what the other guy said
A 2.0 kg melon is balanced on a circus performer's head. An archer shoots a 50.0 g arrow at the melon with a speed of 30 m/s. The arrow passes through the melon and emerges with a speed of 18 m/s. Find the speed of the melon as it flies off the performer's head.
The speed of the melon as it flies off the performer's head is 0.3 m/s
Law of conservation of momentum?The law of conservation of momentum states that for a system of colliding bodies, the total momentum before the collision is equal to the total momentum after the collision, provided there is no net external force acting on the bodies.
To find the speed of the melon, we use the formula from the law of conservation of momentum.
Formula:
mu+m'u' = mv+m'v'............ EquationWhere:
m = mass of the melonu = initial velocity of the melonm' = mass of the arrowu' = initial velocity of the arrowv = final velocity of the melonv' = final velocity of the arrow.From the question,
Given:
m = 2 kgm' = 50 g = 0.05 kgu = 0 m/s (at rest)u' = 30 m/sv' = 18 m/s.Substitute these values into equation 1
(2×0)+(0.05×30) = (0.05×18)+(2×v)0+1.5 = 0.9+2v2v = 1.5-0.92v = 0.6v = 0.3 m/s.Hence, The speed of the melon as it flies off the performer's head is 0.3 m/s.
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