Answer:
A. Highly viscous and associated with violent eruptions
Explanation:
Most silica rich magma have high viscosity and huge amount of trapped gases within them. As they continue to upwell and expand, the gases causes violent eruptions near Volcanoes. Most granitic/rhyolitic magma are silica rich.
Answer: Option (A)
Explanation: Silica rich magma are those in which the magma has more than 65 % of silica content. The higher the silica content, the higher is its viscosity i.e viscosity of a magma is directly proportional to the silica content of magma.
This highly viscous magma inside the volcanoes moves sluggishly and mostly gets concentrated in the vents and seals them. With time, when the pressure exerted by the magma is too high, it creates violent eruptions through the vents.
Thus, the correct answer is option (A).
Adam applies an input force to the pulley as he pulls down to lift the object. As he does this, Adam wonders about how the pulley is helping him. How is the pulley helping Adam lift the object?
A. A fixed pulley lowers the amount of force needed to do the same amount of work.
B. A fixed pulley increases the distance over which the force is applied.
C. A fixed pulley helps Adam change the direction of the effort force.
D. All of these answers are correct.
A is the correct answer
The diagram shows a spectrometer being used to analyze a sample of a solution.
Which letter represents the diffraction grating?
A. W
B. X
C. Y
D. Z
Answer
B. X
A plate of glass or metal ruled with very close parallel lines, producing a spectrum by diffraction and interference of light.
diffraction grating is an optical component that splits and diffracts light into several beams travelling in different directions. The light emerges with its colours separated.
Answer:
X
Explanation:
I just answered this question on my quiz
If the input force on a simple machine is 2 N and the output force is 4 N, what is it’s mechanical advantage?
Explanation:
Given that,
Input force on a simple machine, F = 2 N
The output force on a simple machines, F' = 4 N
The ratio of the output force to the input force of any simple machines is called its mechanical advantage. Mathematically, it is given by :
[tex]m=\dfrac{F'}{F}[/tex]
Putting the value of F and F' in above equation. We get :
[tex]m=\dfrac{4}{2}[/tex]
m = 2
So, the mechanical advantage of the simple machines is 2. Hence, this is the required solution.
Answer:
Mechanical advantage, m = 2
Explanation:
Given that,
The input force on a simple machine, [tex]F_i=2\ N[/tex]
The output force on a simple machine, [tex]F_o=4\ N[/tex]
To find,
The mechanical advantage of the simple machine.
Solution,
The ratio of the output force to the input force of any simple machines is called its mechanical advantage. Its expression is given by the below formula :
[tex]m=\dfrac{F_o}{F_i}[/tex]
[tex]m=\dfrac{4}{2}[/tex]
m = 2
Therefore, the mechanical advantage of the simple machines is 2.
Neglecting losses in a transformer, it's input and output ______ are equal.
A.) Current
B.) Voltage
C.) Power
D.) Turns of wire
Neglecting losses in a transformer, it's input and output power are equal. (C)
The input power in the transformer are equal to the output power of a transformer.
Answer : Option C
Explanation:
The transformers have power on either side as input or output to be constant. This is so because the transformers are the electrical device which transfer the energy between the circuits. There are two types of transformers, step up transformers and step down transformers.
Both follows the following expression of power = voltage x current. According to the type of transformer, the turns of wire and voltage and current are kept varying but the power remains constant.
Why is coal costly to produce?
1.coal is found deep underground.
2. Coal is expensive to make
3. Coal is only found in certain places on earth.
4. Coal is difficult to make in the lab.
It should be the first answer. I'm sorry if it's wrong
Coal production is costly because coal is found deep underground, necessitating expensive mining operations. Corrent answers are 1.coal is found deep underground, 2. Coal is expensive to make and 3. Coal is only found in certain places on earth.
Coal production is costly primarily because coal is found deep underground. This necessitates extensive and expensive mining operations to extract the coal.
There are two main methods of coal mining:
Surface mining: This involves removing the topsoil to access coal seams close to the surface. It is cheaper but causes significant environmental damage.Underground mining: This method is used for coal that is deep beneath the Earth's surface. It involves digging tunnels and is more hazardous and costly due to safety concerns and complex machinery.Furthermore, transporting the mined coal to power plants or industrial sites adds to the cost. Lastly, coal processing, which involves cleaning and removing impurities, adds another layer of expense.
Corrent answers are 1.coal is found deep underground, 2. Coal is expensive to make and 3. Coal is only found in certain places on earth.
otassium hydroxide (KOH) and hydrochloric acid (HCl) react in a beaker. They form potassium chloride (KCl) and water (H2O). What type of reaction is this?
synthesis reaction
double replacement reaction
single replacement reaction
decomposition reaction
Answer
Hello,
This is a double replacement reaction.
Explanation
A double replacement reaction occurs wherein the two principle reactants exchange after reaction. In this example, Cl will combine to K to form KCl and H will add to OH to form H2O.The cations and anions switch between the reactants to produce new products.
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The soymilk is most likely a ____.
If you're referring to this question :
A container of soymilk has the instruction on its label to "shake well before opening." The soymilk is most likely a !suspension!
Suspension is the answer.
Hope this helps,
Davinia.
To turn a coil of wire into a magnet, run a(n) ____ through it.
A.) Electromagnetic Current
B.) Magnetic Field
C.) Electric Current
D.) None of these
A.) Electromagnetic Current
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A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65m/s off a cliff. Assume no air resistance. How long until the ball reaches the ground?
The horizontal motion has no effect on the vertical drop.
From a drop, the distance the ball falls in 'T' seconds is
D = 4.9 T^2
so
2.2 = 4.9 T^2
T^2 = 2.2/4.9
T^2 = 0.449 sec^2
T = 0.67 second
We have that A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65m/s off a cliff. Assuming no air resistance will take t to reach the ground
t=0.670sec
From the question we are told that
A ball is thrown horizontally at a height of 2.2 meters
a velocity of 65m/s off a cliff
Generally the equation for the Time is mathematically given as
s=ut+1/2gt^2
Therefore
[tex]2.2=0t+1/2(9.8)t^2\\\\t=\sqrt{\frac{2.2}{0.5*9.8}}\\\\t=0.670sec[/tex]
Therefore
A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65m/s off a cliff. Assuming no air resistance will take t to reach the ground
t=0.670sec
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Sound waves are converted finally into which of these signals in order to be processed by the brain?
A.
Electrical signal waves
B.
pressure waves
C.
longitudinal waves
D.
high-frequency transverse waves
E.
low-frequency transverse waves
Sound waves are longitudinal wave which propagates in form of compression and rarefaction through the medium
As the medium is have compression and rarefaction then we will have few positions in the medium where we have pressure maximum and few points of less pressure.
this pressure difference creates disturbance into our ear drum and this disturbance or this signal is convey to brain as sound.
The transmission of this signal is always in form of electrical signal which are carried by neurons into our brain
So the sound waves are converted finally into electrical signals in order to be processed by the brain.Read more onAnswer:
A. Electrical signal waves
Explanation:
Need help on the first and second one
One
d = 400 m
t = 20 s
speed = ?
speed = 400 / 20
speed = 20 meters/second
Two
d = 50 meters
t = 10 seconds
speed = 50 meters / 10 seconds
speed = 5 meters / second
The nucleus of an atom emits a particle. The particle is equal in size to a helium nucleus. What is this particle? A) an alpha particle
B) a beta particle
C) a Newton
D) a gamma ray
Answer:
A) Alpha particle
Explanation:
An alpha particle is identical to a helium nucleus, since consists of 2 protons and 2 neutrons.
The charge of an alpha particle is +2e and its mass is 4 a.m.u.
Alpha particles are produced in alpha decays. Alpha decays occur when a nucleus emits an alpha particle: as a result, the atomic number of the nucleus decreases by 2 units, while its mass number decays by 4 units.
The equation that represents an alpha decay is
[tex]_Z^AX \rightarrow _{Z-2}^{A-4}Y+_2^4 \alpha[/tex]
According to the law of universal gravitation, as mass increases, gravity
As distance
increases, gravity
According to the Law of Universal Gravitation (applying to all things in the universe, hence "universal"), all objects attract each other through gravitational force. ... As mass increases, gravity increases (related linearly) because there is a stronger attraction between objects with more "stuff" (matter).
Kinetic friction is affected by the weight of the object. TrueFalse
Answer;
The above statement is True
Kinetic friction is affected by the weight of the object.
Explanation;Kinetic friction is a force that acts between moving surfaces. An object that is in motion over a surface experiences a force in the opposite direction to the direction of movement.The equation for kinetic friction is given by the formula;F= coefficient of friction * Normal force.
Normal force is the force of the table pushing back on the block and can be calculated by formula;F = mass* acceleration due to gravity.
Therefore, the weight of an object determines its kinetic friction.Answer:
The answer is True. Friction is indeed affected by weight.
Explanation:
You travel in a circle, whose circumference is 8 kilometers, at an average speed of 8 kilometers/hour. If you stop at the same point you started from, what is your average velocity? A. 0 kilometers/hour B. 2 kilometers/hour C. 4 kilometers/hour D. 8 kilometers/hour E. 16 kilometers/hour
Velocity = (displacement) / (time)
Displacement = straight-line distance between start-point and end-point
If you stop at the same point you started from, then your displacement for the trip is zero.
The answer is A
Velocity = (displacement) / (time)
Displacement = straight-line distance between start-point and end-point
If you stop at the same point you started from, then
your displacement for the trip is zero, and your average
velocity is also zero.
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Which of the following statements is true? -The sun will eventually die, but it will not affect Earth.
- The sun uses its own matter to create light and heat.
-The sun is a rare G2 star, which means it is extremely bright.
-The photosphere is only visible during a total solar eclipse.
I think the true option is "The sun uses its own matter to create light and heat."
Answer:
- The sun uses its own matter to create light and heat.
Explanation:
Sun is composed of gases majorly Hydrogen and Helium. In the core, the hydrogen atoms fuse to form helium atoms. This nuclear fusion reaction in the core produces huge amount of energy in the form of heat and light.
Thus, the statement that sun uses its own matter to create light and heat is true.
Sun is a G2 star. It is not a rare star. It is appears extremely bright because it is closer to earth. Else, it has a average brightness.
When we look at the sun, we actually view the photosphere. chromosphere is only visible during a total solar eclipse.
The sun would eventually die and in this process, it would become red giant expand and engulf the earth. Finally its core would form a white dwarf.
If 500 J of energy were added to 1 kg of each of these samples , which would experience the LEAST temperature increase
What does "which" mean ? Does it mean to pick the right one out of a list that you're hiding from us ?
There's no way we can begin to make a choice if we don't know WHAT the samples are samples OF.
I CAN give you some info, however, that will probably help you make the right choice from the hidden list that you have.
If water is on the list, then that's the answer, EXCEPT if liquid ammonia is on the list. Liquid ammonia is the only known substance on Earth that beats water as the answer to this question.
If neither liquid ammonia NOR water is on your secret list of samples, then you're on your own, Bunky.
Answer: if you are on usa test prep the answer is aluminum
Explanation:
When making observations, you should provide a general description of the subject, rather than going into too much detail. Please select the best answer from the choices provided T F
Answer: False
Explanation:
Observation is a detailed record of the data obtain after the implementation of the scientific procedure. It does not include the description of the subject as it is already mentioned in the literature review or writing theory or principle of the scientific research or experiment.
Compared to its weight on Earth, a 10-kg object on the moon will weigh Question 9 options: less. the same amount. more.
it will weigh less on the moon.
ANY object will weigh 83% less on the Moon than weighs on Earth.
Your 10kg rock weighs 98N (22.4 lbs) on Earth and 16N (3.6 lbs) on the Moon.
The builder of a house on a cliff overlooking the ocean should be concerned about what geologic phenomenon
Final answer:
Builders should be concerned about erosion, mass wasting, and slope instability when constructing homes on cliffs, with particular risks including landslides and tsunamis arising from geological vulnerabilities and ocean dynamics.
Explanation:
The builder of a house on a cliff overlooking the ocean should be concerned about geologic phenomena such as erosion and mass wasting processes. Ocean waves incessantly weather away at the land, creating sea cliffs that become prime areas for concerns about stability. Particularly, the undercutting action of the sea can lead to portions of the cliff collapsing, and additional mass wasting can occur as higher rocks calve off. Notably, the construction of buildings on steep slopes can influence nearby slope instability due to changes in drainage, which further compounds these concerns.
Geologic factors such as rock bedding, fracturing, and foliation are structural weaknesses that can be exacerbated by this process, increasing the risk of landslides. Furthermore, when building in coastal areas, one must also consider the potential risk from tsunamis, such as the hypothesized collapse of volcanic island slopes that could generate massive waves. Thus, attention to elements like coastal erosion, wave-cut platforms, and tectonic activity is crucial during the planning and building phase to mitigate potential disasters.
If you can’t open the lid of a jelly jar what should you do?
If I can't open the lid of a jelly jar, I'd keep trying and if I can't open the lid of a jelly jar after the MANY tries I took, I'd ask for help.
Hit in the center of the top, and it will let some air out, that will make it easier.
Do gamma rays have lower or higher frequency than microwaves
Gamma rays have extremely shorter wavelengths than microwaves and therefore have higher frequencies.
Gamma rays have a higher frequency than microwaves. In the electromagnetic spectrum, the frequency and energy increase from radio waves to gamma rays. Gamma rays are the most energetic, and microwaves are on the lower energy end of the spectrum.
Explanation:Gamma rays have a higher frequency than microwaves. In the electromagnetic spectrum, frequency and energy increase from radio waves to gamma rays, making gamma rays the most energetic form of electromagnetic waves. Simply put, gamma rays' frequency is higher and their wavelength is shorter than microwaves.
Microwaves are on the lower energy end of the spectrum, used in applications such as cooking and telecommunications. They have a frequency ranging from about 10⁹ Hz to 10¹² Hz.
Shortly, gamma rays are nuclear in origin and encompass the highest-frequency electromagnetic radiation of any type, meaning they have a higher frequency than microwaves.
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rank the work done on the charged particles from highest to lowest
Answer:
correct order of work done is given as
2 > 3 > 4 > 1
Explanation:
When positive charge is dragged opposite to electric field then in that case work done is positive while if negative charge is dragged opposite to electric field then the work done is negative
So here we will have
positive work for charge 2, 3 and 4 while for negative charge particle 1 the work done is negative
now here we also know that work done is product of force and displacement
so here work depends on displacement of charge particle
maximum displacement is force particle 2
minimum is for particle 4
so correct order of work done is given as
2 > 3 > 4 > 1
Answer:
2, 3, 4, 1
Explanation:
on edg
4. What happens when the temperature of an object increases? a. The object’s particles move close together b. The number of the object’s particles increases c. The object’s particles move faster d. The object’s particles stop moving
c the objects particles move faster
Answer: c.The object’s particles move faster
Explanation:
When the temperature of an object increases, the particles of that object gain kinetic energy and move faster.
Kinetic energy is related to motion. If an object has multiple particles, as faster they move, they will collision with each other.
So, the speed of the particles is related to the temperature. (And also the mass of the particle)
Light travels at a constant speed of about 300,000 km/s. This speed is referred to as the speed of light. A light year is the distance that light travels in one year. One light year is equal to 9.46 trillion kilometers. The closest star to Earth, other than the Sun, is Proxima Centauri. It takes light from this star about 4.2 years to reach Earth. How far from Earth is the star Proxima Centauri? A. 4.2 light years B. 9.46 trillion km C. 300,000 light years D. 300,000 km.
Based on the information in the question, a light year is the distance traveled light in one year. Then if the light from the star Centauri takes 4.2 years to reach the earth, then its distance from earth is 4.2 light years.
Answer:
The correct choice is
A. 4.2 light years
Explanation:
v = speed of light = 300,000 km/s
t = time taken for the light to travel from Proxima centauri to earth = 4.2 years
d = distance traveled by light in 1 year = 1 light year
So
distance in 1 year = 1 light year
distance in 4.2 year = 4.2 light year
Hence
distance of star Proxima Centauri from earth = 4.2 light year
How does the thermal energy of a large container of water compare to a small container of water at the same temperature
The large container warms slower than the smaller container because of the amount of space . Both can warm to the same temperature tho just one takes longer than the other . Can I please be marked as brainliest! Have a great day !
The larger container warms up slower than the small one
For Al, its atomic number is 13 and its mass number is 27. How many neutrons does it have? A. 13 B. 14 C. 26 D. 27 E. 40
Answer:
B. 14
Explanation:
For an element:
- Atomic number: is the number of protons in the nucleus (p)
- Mass number: it is the number of protons (p) + neutrons (n) in the nucleus
For Al (aluminium), we have:
p = 13
p + n = 27
Substituting the first equation into the second one, we find the number of neutrons:
n = 27 - p = 27 - 13 = 14
Answer:
14
Explanation:
plato
The windowpanes are___________ a. opaque b. transparent c. absorbent .
The colors of the panes are due to the wavelengths of light that the glass_________ a. absorbs b. allows to pass through c. reflects.
Answer:
The windowpanes are- transparent.
The color of the panes are due to the wavelengths of light that the glass- allows to pass through
Explanation:
Just answered the question.
Answer:
The two answers are:
Explanation:
1) transparent
2) allows to pass through
I also just did this question. No lie. I hope this helps!
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if i contain 3 moles of gas in a container with a volume of 60 liters and at a temperature of 400 k, what is the pressure inside the container?
Answer:
[tex]1.66\cdot 10^5 Pa[/tex]
Explanation:
The ideal gas equation states that:
[tex]pV=nRT[/tex]
where
p is the gas pressure
V is the gas volume
n is the number of moles of the gas
R is the gas constant
T is the absolute temperature of the gas
For the gas in this problem, we have:
[tex]n = 3 mol[/tex] (number of moles)
[tex]V=60 L=60\cdot 10^{-3} m^3[/tex] (gas volume)
[tex]T=400 K[/tex]
So we can solve the formula for p, the pressure of the gas:
[tex]p=\frac{nRT}{V}=\frac{(3 mol)(8.314 J/mol K)(400 K)}{60\cdot 10^{-3} m^3}=1.66\cdot 10^5 Pa[/tex]
_____ theory led to the development of the theory of plate tectonics.A.Continental driftB.ThermodynamicC.Seafloor spreading
The theory is A. continental drift.
Explanation:The lithosphere which is the outermost layer of the planet is broken into pieces called tectonic plates. In this scientific theory called plate tectonics, seven large and greater number of small plates are broken and moved separately. This theory is based on the concept of continental drift.
In the geologic time, continents shift their position from the earth's surface. Similar fossils found on different continent's shores prove us that the continental drift is nothing but truth.