Answer:
D) Both do zero work
Explanation:
The work done by a force is given by:
[tex]W=Fd cos \theta[/tex]
where
F is the force applied
d is the displacement
[tex]\theta[/tex] is the angle between the direction of the force and the displacement
From the formula, we notice that work is done online when the displacement is non-zero, so when the object is moving.
In this problem, the wall is stationary: this means that the displacement is zero, d = 0, so no work is done.
Even though Person X is pushing twice as hard as Person Y, both of them are doing zero work, because the brick wall is not moving. Thus, the displacement is zero, and the work done, according to the Physics formula, is also zero.
Explanation:The correct answer is D) Both do zero work.
According to the concept of work in Physics, work is defined as the amount of energy transferred by a force over a displacement. It is given by the formula Work = Force x Distance x cosθ. Here, even though Person X is pushing twice as hard, the brick wall isn't moving (i.e., displacement is zero). When the displacement is zero, no matter how much force is applied the work done will be zero because the distance over which the force is applied is zero. Therefore, both Person X and Person Y are doing zero work.
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How does the electric potential energy change as the electron moves from i to f?
Answer: it increases
Explanation: .
In an adiabatic process, the internal energy of a system decreases by 34,000 J. What is the work done by the system?
Adiabatic free expansion, no heat transfers and no work on the system. Adiabatic compression would increase the internal energy of the system. In an adiabatic compression, 200 J of work is done on a gas.
Final answer:
The work done by the system in an adiabatic process where the internal energy decreases by 34,000 J is also -34,000 J.
Explanation:
In an adiabatic process, where no heat is exchanged with the surroundings, the change in internal energy (ΔU) of a system is equal to the work done (W) by the system. Therefore, if the internal energy of a system decreases by 34,000 J, the work done by the system on the surroundings is also -34,000 J (the negative sign indicates that work is done by the system). This is based on the first law of thermodynamics, which in the adiabatic case simplifies to ΔU = W, since the heat transfer (Q) is zero.
What causes clouds of dust and gas to form a protostar
Gravity force causes the clouds of dust and gas to form a protostar. As this attraction force is responsible for gathering and compressing the existing elements in the cloud of gas and dust, heating them during this process.
Then, when the amount of material accumulated by gravitational contraction is large enough, and the temperature and pressure reached high enough, the nuclear fusion process will begin.
To understand it better: The hydrogen nuclei will begin to fuse, generating helium nuclei in the process and releasing huge amounts of energy.
It should be noted that the protostars radiate half of the energy contributed by the gravitational collapse and the other half is invested in heating its core.
The speed with which force is developed by skeletal muscles is determined by the
Answer:BRAIN
Explanation:
1. The sedimentary rock known as conglomerate typically forms in _______ environments in which particles can become rounded, such as fast-flowing rivers.
2. An example of _______ is when moving water slows down and particles being transported in the water begin to settle out (sediment) in a new location.
3. _______ is a type of sediment that feels smooth to your fingers but gritty in your mouth.
4. The most common chemical sedimentary rock is _______.
Answer: 1. high-energy
2. deposition
3. Silt
4. limestone
5. soluble
6. tectonic forces
7. before
8. faunal succession
9. nondeposition
10. coarser
Explanation:
Answer: (1) Fluvial environment
(2) Deposition
(3) Limestone
(4) Sandstone
Explanation:
Conglomerates are those in which the particles are big and rounded. They are formed in the high energy condition, such as fluvial or beach environment having strong winds.Deposition takes place with the rate of transport of fluid or water. If the flow rate is high then the water carry sediments to a far extent, whereas if the flow rate is slow or it stops then the sediments get deposit.Limestone is comprised of calcium carbonate, so when we touch it with our fingers we feel a bit of smoothness and tastes like grit in mouth.Sandstone is the most common one, containing approximately 70-75% of all the sedimentary rocks on earth.4. In general, the electric force is directly related to the magnitude (strength) of the charges. This means that as the magnitude of the charges increases, the electric force will also:
A. Increase
B. Decrease
C. Not change at all
D. There is no way to know
5. Therefore, when the magnitude of one charge is increased by a factor, the magnitude of the force will…
A. Increase by the same factor
B. Decrease by the same factor
C. Increase by the square of the factor
D. Decrease by the square of the factor
E. Not change at all
Based on your previous answers, which statement best describes how the electric force would change if the magnitude of Charge 1 were DECREASED?
A. The electric force would decrease.
B. The electric force would increase.
C. The electric force would not change.
D. There is no way to know.
My teacher didn't explain this well
4. A. Increase
The magnitude of the electric force between two charges is given by Coulomb's law:
[tex]F=k\frac{q_1 q_2}{r^2}[/tex]
where
k is the Coulomb's constant
q_1 and q_2 are the two charges
r is the separation between the two charges
As we see from the formula, the strength of the electric force is:
- directly proportional to the two charges q1 and q2
- inversely proportional to the square of the distance r
Therefore, we can conclude that:
- if the magnitude of the charges increases, then the magnitude of the force will increases as well
- if the separation between the charges increases, then the magnitude of the force will decrease
5. A. Increase by the same factor
Again, the magnitude of the electric force between the two charges is given by Coulomb's law:
[tex]F=k\frac{q_1 q_2}{r^2}[/tex]
we have said that the force F is directly proportional to the two charges q_1 and q_2.
Let's assume now that charge q_1 is increases by a certain factor A. Then the electric force will change as follows:
[tex]F'=k\frac{(A q_1) q_2}{r^2}=A(k\frac{q_1 q_2}{r^2})=A\cdot F[/tex]
so, the magnitude of the electric force has increased by the same factor.
6. A. The electric force would decrease.
This part is similar to part 5, however this time the charge q_1 is decreased.
This means that we can rewrite the new charge q1 as
[tex]q_1 ' = \frac{q_1}{A}[/tex]
where A > 1. Let's see how the electric force changes:
[tex]F'=k\frac{(\frac{q_1}{A}) q_2}{r^2}=\frac{1}{A}(k\frac{q_1 q_2}{r^2})=\frac{F}{A}[/tex]
This means that the magnitude of the electric force has decreased by the same factor.
Layer of the atmosphere where jets fly through and contains ozone layer is called ________
Answer:
The stratosphere
Answer:youre moms pssy is sweet is the nswer to this question
Explanation:
A projectile has an initial horizontal velocity of 15 meters per second and an initial vertical velocity of 25 meters per second. Determine the projectiles horizontal displacement if the total time of flight is 5 seconds
Answer:
75 m
Explanation:
The horizontal motion of the projectile is a uniform motion with constant speed, since there are no forces acting along the horizontal direction (if we neglect air resistance), so the horizontal acceleration is zero.
The horizontal component of the velocity of the projectile is
[tex]v_x = 15 m/s[/tex]
and it is constant during the motion;
the total time of flight is
t = 5 s
Therefore, we can apply the formula of the uniform motion to find the horizontal displacement of the projectile:
[tex]d= v_x t =(15 m/s)(5 s)=75 m[/tex]
The horizontal displacement of a projectile can be calculated using the formula x = Vx*t. Given an initial horizontal velocity of 15 m/s and a flight time of 5 seconds, the horizontal displacement is 75 meters.
Explanation:In physics, the path a projectile takes is composed of both horizontal and vertical components. Both these are independent of one another and have their own distinct characteristics. For the given scenario, the horizontal displacement, which tells us how far the projectile travels horizontally, can be found using the formula x = Vx*t, where Vx represents the initial horizontal velocity and t is the total time of flight.
In this case, Vx equals 15 meters per second and t equals 5 seconds. Substituting these values into the formula gives us x = 15 m/s * 5 s, which results in a horizontal displacement of 75 meters.
Please remember that this calculation assumes there's no air resistance and the object is launched and lands at the same height. Any alterations in these factors, like a taller launch height or the presence of air resistance, will affect the outcome.
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A boy reaches out of a window and tosses a ball straight up with a speed of 10 m/s. The ball is 20 m above the ground as he releases it. Use conversation of energy to find
Part A The ball's maximum height above the ground. Part B The ball's speed as it passes the window on its way down. Part C The speed of impact on the ground.
Answer:
A.25.096m
B.10m/s
V=22.189m/s
Explanation:
Part A The ball's maximum height above the ground. Part B The ball's speed as it passes the window on its way down. Part C The speed of impact on the ground.
newton's equation of motion
V^2= u^2+2as
a=-g since it is going against gravity
S=h s= distance travelled
h=height
V=final velocity
U=initial velocity
V=o
u=10m/s
0=100+2(-9.81)h
h=100/19.62
h=5.096m
The maximum height above ground level=
Height from thr window to the maximum the ball reached before coming downward+ height from the window to the ground level
H=h+h1
H=5.096+20
25.096m
2.part b
The final velocity as it reach its maximum height upward becomes zero and then the final velocity upward= the initial velocity when coming down
V=U =0
v^2=u^2+2ah
V^2=0+2(9.81)(5.096)
V=9.99917596605
V=10m/s
3. Speed of its impact on the ground
v^2=u^2+2ah
V^2=0+2(9.81)(25.096)
V^2=492.38352
V=22.189m/s
Using the conversion of energy to resolve the questions
The ball's maximum height above ground = 25.10 m The ball's speed on its way down = 10 m/s The impact speed on the ground = 22.19 m/sGiven data :
initial speed of ball = 10 m/s
Distance of ball from ground ( h ) = 20 m
A) Determine the ball's maximum height above ground
we will apply the Newton's motion equation
V² = u² + 2as ------ ( 1 )
where ; u = 0 m/s, v = 0 m/s , a = -9.81 m/s² , s = ?
Insert values into equation ( 1 )
0 = 100 + 2(-9.81 ) * s
s = 5.1 m
∴ Ball's maximum height ( H ) = s + h = 5.1 + 20 = 25.1 m
B) Determine the Ball's speed as it passes the window on its way down
V² = u² + 2as
where ; V = ? , u = 0 , a = 9.81 m/s² , s = 5.1 m
Hence ; V² = 0 + 2 ( 9.81 ) * 5.1 m
∴ V = 10 m/s
C) Determine the speed of impact on the ground
V² = u² + 2aH
where ; V = ? , u = 0, a = 9.81 m/s², H = 25.1 m
insert values into equation above
V² = 0 + 2( 9.81 ) * 25.1
V = √(0 + 2( 9.81 ) * 25.1 )
= 22.19 m/s
Hence we can conclude that The ball's maximum height above ground = 25.10 m, The ball's speed on its way down = 10 m/s , The impact speed on the ground = 22.19 m/s.
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Large electric fields in cell membranes cause ions to move through the cell wall. The field strength in a typical membrane is 1.0 times 10^7 N/C. What is the magnitude of the force on a calcium ion with charge +e? Express your answer using two significant figures.
Answer:
[tex]1.6\cdot 10^{-12}N[/tex]
Explanation:
The electric force on a charged particle is given by
[tex]F=qE[/tex]
where
q is the charge of the particle
E is the strength of the electric field
In this problem, we have
[tex]E=1.0\cdot 10^7 N/C[/tex] is the electric field strength
[tex]q=+e=+1.6\cdot 10^{-19}C[/tex] is the charge of the calcium ion
Therefore, the electric force exerted on the calcium ion is
[tex]F=(1.6\cdot 10^{-19}C)(1.0\cdot 10^7 N/C)=1.6\cdot 10^{-12}N[/tex]
Does a front always mean one air mass will be displaced by another? When is there no displacement?
Answer:
Not necessarily, if the air masses are not strong enough, a stationary front is caused
Explanation:
A front is a block of separation between two air masses at different temperatures. They can be classified as cold, warm, stationary and occluded fronts. When a front is formed, a collision occurs between the two masses, generating a very dynamic activity, with electrical storms, gusts of wind and downpours.
A stationary front is one where neither of the two air masses are strong enough to replace the other. On such a front can generate atmospheric conditions such as prolonged rainfall and high cloudiness.
After several days, the stationary fronts may dissipate or become a cold or warm front. .
The highest parts of a transverse wave are called
The highest parts of a transverse wave are called "crests."
When a wave travels through a medium, its particles oscillate back and forth around their equilibrium positions. In a transverse wave, the motion of the particles is perpendicular to the direction of the wave propagation.
These waves have crests and troughs. The highest points, where the particles are at their maximum displacement upwards from their rest position, are known as "crests."
Conversely, the lowest points, where the particles are at their maximum displacement downwards from their rest position, are known as "troughs."
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A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m they both have the same
a, speed.
b, momentum.
c, kinetic energy.
d, inertia.
e, change in potential energy.
Try B-momentum that is what I think that it is
A free electron is moving with a velocity of 3 × 105 m/s. It strikes a stationary electron in a head-on elastic collision. The mass of an electron is 9.1093 × 10-31 kg. What will be the magnitude and direction of the momentum of the stationary electron, post collision?
Answer:
After the colision, the stationary electron's momentum is given as:
P = 2.7328 x 10^(-25) kg m/s
The direction of momentum is the same as the direction of velocity of the electron.
Explanation:
In an Isolated system, when an object moving at some velocity v collides head on with a stationary object of equal mass. There velocities are exchanged.
This means that the first electron will become stationary and the electron which was stationary initially will start moving at a velocity of 3*10^(5)m/s in the same direction as the first electron.
Post collision momentum of the stationary electron:
V = 3 x 10^5 m/s
m = 9.1093 x 10^(-31) kg
Momentum = P = mV = 9.1093 x 10^(-31) x 3 x 10^5
P = 2.7328 x 10^(-25) kg m/s
The direction of momentum is the same as the velocity of the electron.
Answer:
273.279 × 10-25 kg.m/s, in the same direction as the incident electron
Explanation:
The momentum of the stationary electron post collision will be 273.279 × 10-25 kg.m/s, in the same direction as the incident electron.
Momentum of the incident electron = mv
= 9.1093 × 10-31 × 3 × 105
= 273.279 × 10-25 kg.m/s
In the collision of the electrons, the total momentum is conserved. Since it is an elastic collision, the momentum of the incident electron is completely transferred to the stationary electron. So it will have the same momentum as the incident electron. It will also move in the direction of the incident electron.
Ree is 27 inches tall on her first birthday. She grows around 6 inches per year after that. What is the rate of change for the scenario described? 6 12 27 33
Answer:
6
Explanation:
The rate of change in this scenario corresponds to the number of inches that Ree grows every year. Basically, Ree's height can be written as a linear equation as follows:
[tex]y=mx+q[/tex]
where
x is the number of years after the first birthday
y is the height in inches
q = 27 is the height of Ree on her first birthday
m = 6 is the inches gained by Ree at each birthday
So the equation can also be rewritten as
y = 6x + 27
Answer:
6
Explanation:
Use the kinetic-molecular theory to explain the compression and expansion of gases.
Answer:
According to the kinetic-molecular theory of gases, gases are composed of atoms and molecules (particles), where the distance among these elements is very large compared to their own size, therefore the total volume occupied by these particles is only a small part of the total volume occupied by the whole gas.
In other words: a gas has enough empty spaces in its total volume, therefore low density, which gives it the property of being highly compressible.
In this same sense, the kinetic-molecular theory of gases starts from the first principle of thermodynamics, establishing a relationship between heat and movement, since all material is composed of particles that are in motion (to a certain extent , depending on the state of matter), and in the case of gases the movement is greater, which is a strong indication of heat (thermal energy).
Now, gases can change their volume in two ways:
-By a change in temperature (heat transfer).
-By a change of pressure
So, this change or variation in volume is related to the work the gas does to change from an initial volume to a final volume.
Then, if in this process the volume decreases, it is said that the gas has been compressed (compression work); but if, on the contrary, the volume increases, the gas will have expanded (expansion work).
In this way, with the increase of the temperature of the gas, it is expanded by the increase of the kinetic energy of its molecules, but if an external pressure is applied it is compressed.
The compression and expansion of gases occur due to free spaces between gas particles.
Is compression and expansion of gases happen?Because of the space between gas particles, gases are easily compressed when pushed into a smaller volume. When the pressure is removed, their random motion enables gases to expand.
So we can conclude that the compression and expansion in gases occur due to free spaces between gas particles.
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Which radiation has no electric charge associated with it?
A) gamma rays
B) beta rays
C) alpha rays
D) all of these
E) none of these
Beta rays . . . No. These are streams of negatively charged electrons.
Alpha rays . . . No. These are streams of pairs of positively charged protons, identical to nucleii of Helium atoms.
Gamma rays (A) . . . Yes. These are electromagnetic waves, not composed of charged particles.
Gamma rays are radiation that has no electric charge associated with it, as they are electromagnetic waves created from energy transitions in atomic nuclei.
Explanation:Among the options given, gamma rays have no electric charge associated with them. Alpha rays are helium nuclei consisting of 2 protons and 2 neutrons and carry a positive charge. Beta rays are high-energy electrons or positrons and carry a negative or positive charge respectively. However, gamma rays are electromagnetic waves, similar to light or X-rays, and do not carry a charge because they are created from energy transitions in the atomic nucleus.
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How does the speed of visible light compare with the speed of gamma rays
Answer:
They are the same
Explanation:
Electromagnetic waves consist of perpendicular oscillations of electric and magnetic field, which oscillate perpendicularly to the direction of motion of the wave (transverse wave). One property of the electromagnetic waves is that they travel in a vacuum always at the same speed, called speed of light:
[tex]c=3.0\cdot 10^8 m/s[/tex]
Electromagnetic waves are classified into 7 different types according to their frequency; from highest to lowest frequency, we have:
Gamma rays
X-rays
Ultraviolet
Visible light
Infrared
Microwaves
Radio waves
We see that both visible light and gamma rays are electromagnetic waves, so they both travel in a vacuum at the same speed, the speed of light.
The Milky Way is often considered to be an intermediately wound, barred spiral, which would be type ________ according to Hubble.
Answer: SBb
On 1930 the astronomer Edwin Hubble classified the galaxies based on their visual appearance into elliptical, spiral and irregular, being the first two classes the most frequent.
So, according to this classification, the Milky Way is a barred spiral galaxy (SBb in Hubble's notation system) because it has a central bar-shaped structure of bright stars that spans from one side of the galaxy to the other. In addition, its spiral arms seem to emerge from the end of this "bar".
Scientifics considered this, after measuring the the disk and central bulge region of the galaxy, and the conclusion is the Milky Way fulfills these conditions, because is a galaxy that orbits on its same axis and with this rotation its arms are twisted in opposite directions around the mentioned axis.
The space shuttle orbits 310 km above the surface of the Earth.
What is the gravitational force on a 5.0 kg sphere inside the space shuttle?
Express your answer with the appropriate units.
Answer:
44.7 N
Explanation:
The gravitational force between the objects is given by:
[tex]F=G\frac{mM}{r^2}[/tex]
where
G is the gravitational constant
m and M are the masses of the two objects
r is the distance between the centres of the two objects
In this problem, we have:
[tex]m=5.0 kg[/tex] is the mass of the sphere
[tex]M=5.98\cdot 10^{24} kg[/tex] is the Earth's mass
[tex]R=6370 km[/tex] is the Earth's radius, while h=310 km is the altitude of the sphere, so the distance of the sphere from Earth's centre is
[tex]r=6370 km+310 km=6680 km=6.68\cdot 10^6 m[/tex]
Substituting into the equation, we find
[tex]F=(6.67\cdot 10^{-11})\frac{(5.0 kg)(5.98\cdot 10^{24} kg)}{(6.68\cdot 10^6 m)^2}=44.7 N[/tex]
To calculate the gravitational force on a 5.0 kg sphere inside the space shuttle, you can use the formula F = mg. However, since the sphere is inside the space shuttle and not on the surface of the Earth, you need to calculate the acceleration due to gravity using the formula g = G(M/R^2). Plugging in the values, you can find the gravitational force on the sphere.
Explanation:The gravitational force on a 5.0 kg sphere inside the space shuttle can be determined using the formula F = mg, where F is the gravitational force, m is the mass of the object, and g is the acceleration due to gravity. In this case, since the sphere is inside the space shuttle and not on the surface of the Earth, the acceleration due to gravity will be different. The acceleration due to gravity is given by g = G(M/R^2), where G is the gravitational constant, M is the mass of the Earth, and R is the distance between the object and the center of the Earth.
Given that the space shuttle orbits 310 km above the surface of the Earth, we need to convert this distance into meters (1 km = 1000 m). So the distance R becomes 310,000 m.
Plugging in the values into the formula, the gravitational force on the sphere inside the space shuttle is:
Convert the distance into meters: R = 310,000 mCalculate the acceleration due to gravity: g = (6.67430 × 10^-11 N m^2/kg^2) * (5.972 × 10^24 kg) / (310,000 m)^2Calculate the gravitational force: F = (5.0 kg) * gUsing these calculations, you can find the gravitational force on the 5.0 kg sphere inside the space shuttle. Don't forget to include the appropriate units in your answer!
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What is the binding energy of a nucleus?
The material through which a mechanical wave travels is a.a medium.b.empty space.c.ether.d.air
The medium is the main factor that differentiates a mechanical wave from an electromagnetic wave, since the first can not propagate without its existence, while the second can propagate regardless of whether the medium exists or not.
In addition, it is the medium that will define, the propagation speed of the wave, according to its specific physical characteristics.
Therefore, the correct answer is a.
Which two subatomic particles make up the nucleus of an atom?
Answer:
protons and neutrons
Explanation:
Aerosol cans use compressed gases to propel the contents out of the can. Which of the following is the best explanation for why aerosol cans should not be overheated? (2 points) The aerosol cans may form a leak, and the compressed gases may condense into a liquid. Gases do not expand when heated, so the excess heat may cause the can to implode. As the can heats, the compressed gases will expand, causing the can to explode. As pressure increases, the gas in the aerosol can vaporize, and the can will no longer work.
Answer:
As the can heats, the compressed gases will expand, causing the can to explode
Explanation:
We know that the gases in the aerosol can would assume the shape and volume of the can. The volume of the can would be the volume of the compressed gas.
As heat is added to the can, the aerosol gases would gain kinetic energy and their speed would increase. The gases would begin to expand and would require more space in order to move. This would indirectly increase the pressures between gas molecules and the walls of the can as collisions soars.
A point would eventually be reached where the gas agitation would lead to an explosion.
Overheated aerosol cans would explode.
What are characteristics of
1. Temperate Grasslands
2. Chaparral
3. Rainforests
4. Aquatic ecosystems
1) Temperate Grasslands-Have hot summers and cold winters.
2) Chaparral-A hot coastal biome.
3) Rainforests-A lot of rain, average temperatures, nutrient-poor soil, and have many exotic animals.
4) Aquatic ecosystems-Is an ecosystem in a body of water where many communities of organisms are dependent on each other and their environment.
Which of the following statements is correct concerning the gas phase?
A gas expands spontaneously to fill its container.
Depending on their chemical nature, two or more gases can form either a homogeneous or heterogeneous mixture.
The volume of a gas is always less than the volume of its container.
When pressure is applied to a gas, its volume increases.
Answer:
A gas expands spontaneously to fill its container.
Explanation:
A gas would always expand spontaneously in any container to fill it up. Gas moves unaided to assume the volume of the space they are put into. Gas molecules are more random and posses more kinetic energy to drive their movements from one place to another. Gases would not require any energy input to make them move.
The volume of a container would then be the same as the volume of the gas that occupies it. Also, when pressure is applied to a gas, the volume reduces considerably according to "Boyle's law".
A homogeneous mixture would have their constituents existing in just one phase. Regardless of any chemical properties of gases, they form homogeneous mixtures.
What is the largest tsunami ever recorded
The Lituya Bay tsunami occurred on July 9th, 1958, northeast of the Gulf of Alaska. It was as a consequence of a strong earthquake of magnitude 8.3 on the Ritchter scale along the Fairweather Fault in the Alaskan Panhandle, which caused a landslide in a fjord in Lituya Bay, collapsing an entire mountain and generating a gigantic wave that rose to 524 meters, the highest recorded so far.
It should be noted that despite its great magnitude and having uprooted all the trees and vegetation of the place, this mega-tsunami claimed only five lives because the area was not as inhabited as the large cities are.
The largest tsunami recorded was the result of the magnitude 9.0 earthquake off Japan's coast in 2011, producing waves over 130 feet high, while the 2004 Indian Ocean earthquake generated a tsunami causing approximately 283,000 fatalities.
Explanation:The largest tsunami ever recorded occurred on March 11, 2011, following a magnitude 9.0 earthquake off the eastern coast of northern Japan. This earthquake, which is the strongest to ever hit Japan, caused a tsunami with waves that reached heights of more than 130 feet. The massive waves resulted in extensive damage and the loss of life, with over 15,500 fatalities. Another catastrophic event was the Indian Ocean tsunami in 2004, caused by a 9.0 magnitude earthquake that generated waves killing around 283,000 people across 11 countries.
These events illustrate the devastating impact of tsunamis, which are large ocean waves typically triggered by underwater earthquakes or volcanic eruptions. The severity of the damage can be exacerbated in areas with nuclear power plants, as seen in the 2011 Japan tsunami, which knocked out cooling systems and resulted in nuclear meltdowns and radiation exposure.
when we changed gravity on something, we changed two things. Can the same idea be applied to electrical force? (the answer is yes) So what are they?
Answer:
yes
Explanation:
Here, the formula for gravity is,
g=GM/R^2
so, to change gravity, either we have to change mass(M) or radius(R) of the planet.
similarly, the formula for electrical force is,
F= kq1q2 / r^2
and to change the electrical force, either we have to change the magnitude of charge(q) or the distance between the two charges(r).
What name is given to the number of particles in a mole
Answer: The answer to your question is Avogadro's number
Explanation: It describes the number of representative particles in one mole of a substance. The official definition of the mole is the quantity that describes the number of elementary entities as there are atoms in
12 g of isotopically pure carbon-12.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, the name given to the number of particles in a mole is Avogadro's number.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
There is no distinction among Avogadro number or Avogadro constant; they are interchangeable. This is the same as the number of particles in 12 g of cabon-12. Avogadro number is indeed the phrase used to indicate any entity's 6.022 10²³ number. Avogadro's number also isn't utilized in everyday life and is not recommended.
Therefore, the name given to the number of particles in a mole is Avogadro's number.
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If 2 grams of element X combine with 4 grams of element Y to form compound XY, how much element Y would combine with 14 grams of X to form the same compound?
7. It’s just a question of keeping the ratios the same.