Answer
Greater than.
Static friction is the force that opposes motion between two objects that are not in motion. For the object to move one have to overcome the static friction. This force is usually greater than the force that exist between two surfaces that are in relative motion. This force is called kinetic friction.
For this reason the coefficient of static friction is greater that coefficient of kinetic friction.
the chemical formula for cesium oxide is cs2o. what is the charge of cesium
Charge +1
Explanation;Cs2O is a neutral compound, so the sum of the charges must total up to zero. Oxygen always has a charge of -2, so this means that Cs2 must have a sign of +2. Since +2 is the charge for 2 Cs atoms, this means that each Cs atom has a charge of +1.That is; (1 × -2) + (2 × x) = 0 , where x is the charge of Cs
= -2 + 2x = 0
= 2x = +2
x = +1
The charge of cesium in the compound with a formula of Cs₂O is +1
How do i determine the charge of cesium?To obtain the charge of cesium, Cs in the compound with a formula of Cs₂O, we shall determine the oxidation number of cesium, Cs in the compound. This is illustrated below:
Compound = Cs₂OOxidation number of O = -2Oxidation number of Cs =?Cs₂O = 0 (Ground state)
2Cs + O = 0
2Cs - 2 = 0
Collect like terms
2Cs = 2
Divide both sides by 2
Cs = 2/ 2
Cs = +1
Thus, we can conclude from the above calculation that the charge of cesium, Cs is +1
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4. What do orbiting satellites and the orbit of the moon around the Earth have in common?
Answer:
Central force motion
Explanation:
Answer:
Orbiting satellites are defined as the satellites that move around the earth in an elliptical path, and that takes the images and records the data of the various geological processes that undergo on the earth's surface. This is also helpful in obtaining the image of the celestial objects.
On the other hand, the moon is the natural satellite of earth, and that also revolves around the sun in an elliptical path.
These orbiting satellites and the moon orbit has something in common, that includes the balancing force. This balancing force is the force that balances the centripetal and the centrifugal force. Due to this balancing force, the satellites and the moon is able to maintain its constant circular motion. If these two forces are not balanced then either the satellites (or moon) will fall back on earth or it will move out of the earth's orbit.
The centripetal force is defined as the force that acts on a body which goes in a circular manner and is projected towards the centre of the body around which it moves. On the other hand, the centrifugal force refers to that apparent force which acts outside of a body that goes around a centre, that generates from the inertia of a body.
Which of the following is an example of a speed? O A. -5 m/s2 west O B. 2m/s C. 2 m/s east O D. 3 m/s south
B is a speed.
A is an acceleration.
C and D are velocities.
The example of speed, with the unit as m/s (meter per second) in the following options is, option B. The option B has speed of 2 meter per second.
What is speed?Speed of an body is the distance traveled by it with respect to time. Speed of a object is the ratio of total distance traveled by the object to the time taken by it. It can be given as,
[tex]s=\dfrac{x}{t}[/tex]
Here, (x) is the distance traveled by a body and (t) is the time taken by it.
As the distance is measured in the meters and time is measured in the second. Thus the speed of an object is measured in meter per second (m/s).
When the distance travelled by an object with respect to time is represented with its direction, then it is called the velocity of the object in that direction.
The rate of change of velocity is called the acceleration. It is represented in the meter per squared second (m/s²).
In the given option,
The unit of option A is m/s². Thus it show, the acceleration. Option B has the units as m/s. Thus option B is an example of speed.Option C and D is has the unit m/s with direction, thus these options represents the velocity of the body.The example of speed, with the unit as m/s (meter per second) in the following options is, option B. The option B has speed of 2 meter per second.
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A certain material has a mass of 565 g while occupying 50 cm3 of space. What is this material?
Answer:
Lead
Explanation:
To get the density of the material, the formula would be:
mass divided by volume which is given by [tex] d = \frac { m } { v } [/tex].
Here in this problem, we are given a mass of [tex] 565 g [/tex] which occupies a volume of [tex] 50 cm^3 [/tex].
So plugging the data in the above formula to find the density:
Density = [tex] \frac { 565 } { 50 } = 11.3[/tex]
From the table, we can see that the material is Lead which has a density of 11.3c/cm^3.
Which of the following types of technologies has best helped scientists to study very high-energy objects in outer space, such as exploding supernovae, black holes, and pulsars?
A.
radio telescopes
B.
space stations
C.
X-ray telescopes
D.
lunar modules
Very high-energy objects and events spit out very high-energy photons, so the instrument you need in order to detect them is the X-ray telescope. (C)
Inconveniently, X-ray telescopes only work when they're up in orbit, because X-rays get seriously soaked up in Earth's atmosphere, and most of them never make it down to the surface ... (lucky for us !) .
X-Ray telescopes are the one which helped the scientist to study very high energy objects in outer space such as exploding supernovae, black holes and pulsars efficiently.
Answer: C
Explanation:
The X-rays can penetrate through larger distance and also through the mirrors of the satellite at grazing angle with least diffraction.
The X-rays are emitted in the form of high energy photons during explosions of supernovae, black holes and pulsars.
All kinds of explosions in the space release light and heat. From the heat energy X-rays will also be released during these explosions. So these X-rays emitted during explosions can be detected by a space telescope with X-ray detector mostly photo detector.
As soft X-rays can easily penetrate the mirror of the satellite containing the telescope, soft x-rays can be detected in space.
The X-ray telescopes could be used once the telescope is placed in space because most of the x-rays will be absorbed in the earth's atmosphere if the telescope is used in earth.
So by satellites, the telescope is made to reach the uppermost layer of atmosphere or in space such that x-rays could be detected.
Which diagram below best represents the magnetic field near a bar magnet?
Since there's no choices, I will show an example.
Answer:
Refer to the diagram attached
Explanation:
What is magnetic field
Magnetic field describes the magnetic influence on moving electric charges, electric currents, and magnetic materials , which is a vector field. A moving charge experiences a force that is perpendicular to both its velocity and the magnetic field in a magnetic field.
What are magnetic field lines?
Magnetic field lines from a bar magnet are closed loops. By convention, the field direction of a magnet is assumed to be outward from the North pole and inward from the South pole. Permanent magnets can be created using ferromagnetic materials.
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A 250 g object is hung onto a spring. It stretches 18 cm. Find the spring's spring constant
Hooke's law establishes that the elongation of a spring is directly proportional to the modulus of the force [tex]F[/tex] applied to it, as long as the spring is not permanently deformed:
[tex]F=k (x-x_{o})[/tex] (1)
Where:
[tex]k[/tex] is the elastic constant of the spring. The higher its value, the more work it will cost to stretch the spring.
[tex]x_{o}[/tex] is the length of the spring without applying force.
[tex]x[/tex] is the length of the spring with the force applied.
According to this, we have a spring where only the force due gravity is applied.
In other words, the force applied is the weigth [tex]W[/tex] of the block:
[tex]W=m.g[/tex] (2)
Where [tex]m=250g=0.25kg[/tex] is the mass of the block and [tex]g=9.8\frac{m}{s^{2}}[/tex] is the gravity acceleration.
[tex]W=(0.25kg)(9.8\frac{m}{s^{2}})[/tex] (3)
[tex]W=2.45N[/tex] (4)
Knowing the force applied [tex]W[/tex] and [tex]x=18cm=0.18m[/tex] and [tex]x_{o}=0[/tex], we can substitute the values in equation (1) and find [tex]k[/tex]:
[tex]W=k (x-x_{o})[/tex] (5)
[tex]2.45N=k (0.18m-0m)[/tex] (6)
Finally:
[tex]k=13.61\frac{N}{m}[/tex]
To find the spring's spring constant, we can use Hooke's law, which states that the force exerted by a spring is directly proportional to the displacement of the object. By plugging in the given values, we find that the spring constant is 13.61 N/m.
Explanation:In this question, we're given a 250 g object that is hung onto a spring and stretches 18 cm. We can use Hooke's law to find the spring constant. Hooke's law states that the force exerted by a spring is directly proportional to the displacement of the object from its equilibrium position.
The formula for Hooke's law is F = -kx, where F is the force exerted by the spring, k is the spring constant, and x is the displacement.
Using the given information, we have the force exerted by the spring as F = (250 g)(9.8 m/s^2) = 2450 g m/s^2 = 2.45 N, and the displacement as x = 18 cm = 0.18 m.
Plugging these values into the formula, we get 2.45 N = -k(0.18 m).
Solving for k, we find k = -2.45 N / (0.18 m) = -13.61 N/m. However, since spring constants are always positive, the spring constant in this case would be 13.61 N/m.
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Can you balance this chemical equation?
(NH4)_2 Cr_2O_7 ===> Cr2O3 + N2 + 4H2O
I think to balance this equation, all you need do is put a 4 in front of the water.
Element # Right #Left
N 2 2
H 8 8
Cr 2 2
O 3+4 7
describe where metals and nonmetals are found on the periodic table
Non metals are all the way on the right side
Metalloids are the stair case
Metals are on the left side
Explain two ways hydrogen for fuel cell vehicles can be produced
How Do Hydrogen Fuel Cell Vehicles Work? Fuel cell vehicles use hydrogen gas to power an electric motor. Unlike conventional vehicles which run on gasoline or diesel, fuel cell cars and trucks combine hydrogen and oxygen to produce electricity, which runs a motor.
Hydrogen for fuel cell vehicles can be produced primarily through steam methane reforming (SMR) and electrolysis of water.
Hydrogen for fuel cell vehicles can be produced in several ways, but two main methods are currently predominant:
Steam methane reforming (SMR):
A common method where methane from natural gas reacts with steam under high pressure and temperature in the presence of a catalyst to produce hydrogen, carbon monoxide, and a small amount of carbon dioxide.
Electrolysis of water:
An electric current is passed through water to separate it into oxygen and hydrogen. This method can use electricity generated from renewable sources, such as wind or solar power, making it a potential zero-carbon process for hydrogen generation.
Which kind of good might not be bought when prices rise?
luxury goods might not be bought
Answer:
Luxury.Explanation:
Luxuries is the sector that suffers more when prices rise, because these goods are not a need to people, they are just leisure and extra things, like having the last smartphone, or having two cars.
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Dave and Kirk are learning about electromagnetic waves in class. Dave says that gamma rays are the most dangerous because they come from outer space. Kirk disagrees. Kirk says that gamma rays are not as dangerous as ultraviolet waves since they cause sunburn. Who is right and why?
Question 12 options:
Neither are right because X-rays have radiation and are the most dangerous. That is why you have to wear a lead vest when you get dental x-rays.
Dave is partly right in his answer that gamma rays are the most dangerous, but it is because of their frequency and wavelength, not where they come from.
Neither are right. Microwaves are the most dangerous because they have the longest wavelength and the biggest frequency. Microwave kill all living things.
Kirk is right. Ultraviolet waves cause sunburn and that can be very dangerous. Too much sun can cause skin cancer.
Its B. I had the question just a week ago
Dave is right because most forms of EMR can be dangerous but the most dangerous form of Electromagnetic radiation has the most energy. This radiation is called gamma rays. Gamma rays are emitted by the nucleus of an atom and can go through 6 feet of concrete, as well as damage your DNA!
Have a nice day!
if a car starts from a stop, and hits 27 meters per second in 8 seconds, what is its acceleration?
Hello,
Vinitial = 0
V final = 27 m/s
time = 8 seg
then
a = Delta(V) / Delta(t),
in other words:
a = (27-0)/8
a = 27/8
a= 3.375 m/s^2
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Most oxygen in our atmosphere _____. has a single oxygen atom combines with carbon has two oxygen atoms has three oxygen atoms
answer all
Answer:
Two oxygen atoms
Explanation:
The majority of the oxygen in the air in our atmosphere consists of molecular oxygen ([tex]O_2[/tex]), which consists of 2 atoms of oxygen, since free oxygen mainly form covalent bonds with other atoms of oxygen.
A small fraction of the oxygen, however, in the ozone form, which consists of 3 atoms of oxygen bond together ([tex]O_3[/tex]).
Which of the following is/are true regarding magnetic fields?
I. Magnetic field lines separate magnetic poles.
II. Magnetic field lines are spaced farther apart at the magnetic poles.
III. Magnetic fields are strongest at the magnetic poles.
A. II only B. I, II, and III
C. I only
D. III only
Here is your answer
D. III only
REASON:
1) The degree of curveness at the poles is maximum.
2) The density of field lines at and near poles is maximum.
Thus, magnetic field strength is maximum at the magnetic poles.
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True or false olives and olive oil are staples foods in the Mediterranean diet
➷ This is a true statement. The Mediterranean diet often replaces things such as butter with olive oil.
✽➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
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True. Olives and olive oil are staples foods in the Mediterranean diet. I Mediterranean and i can guarantee you it 100%.
What is normal force?
Answer:
A force that objects exert, stopping solid objects from passing through each other aka contact.
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Which type of rock can only form on or very near Earth's surface?
For the surface,i would say Most Likely Ignious rock,since the process happens from cooling and volcanoes are mostly found on the surface of the earth, Hope this helped (:
Sedimentary for apex.
A noun-moving object always has zero Kinetic energy.true or false?
The answer is true. A non-moving object will have zero kinetic energy, however, if a moving object, for any reason, stops it's movement, the kinetic energy will then get converted into some other form of energy.
This statement is true. This is because and object gains kinetic energy when the object moves, or wastes its potential energy. Therefore, if an object is not moving, it has stored a lot of potential energy, but has zero kinetic energy.
If a car engine accomplishes 4000 joules of work but burns gas equivalent to 16000 joules of energy, what is the efficiency of the engine
16,000/4,000=4*100= 400
Answer: 400
Answer:
The efficiency of the engine is 25%.
Explanation:
Given that,
Output energy = 4000 J
Input energy = 16000 J
The efficiency of the engine is equal to the output energy divided input energy.
Formula of the efficiency is defined as,
[tex]\eta =\dfrac{Output\ energy}{Input\ energy}\times100[/tex]
[tex]\eta=\dfrac{4000}{16000}\times100[/tex]
[tex]\eta=0.025\times100[/tex]
[tex]\eta=25\%[/tex]
Hence, The efficiency of the engine is 25%.
What is necessary for a metallic bonds to form
Answer:
The electrons must be attracted to each other.
Explanation:
The complete question is:
"What is necessary for a metallic bond to form?
The atoms should be in close proximity.
The atoms should be far apart.
The electrons must be attracted to each other.
The nuclei must contain neutrons."
The metallic bond is a force that is responsible for holding the atoms together in a metallic substance. In other words, the metallic bond occurs between two metal atoms. Metal atoms need to give up electrons to achieve the configuration of a noble gas. In this way, this type of bonding all the enveloped atoms lose electrons from their outermost layers, which move more or less freely between them, forming an electronic cloud (also known as the sea of electrons).
In other words, a metal is a set of metal cations immersed in a sea of delocalized electrons where the electrostatic attraction between positive (of the cation) and negative (of the electron) charges holds together all the atoms of the metal that forms the bond .
The metallic bond is the only bond where the electrons are not located exclusively between a pair of atoms, but are relocated among millions of them in a kind of glue or "sea of electrons" that keep them tightly bound or cohesive.
The answer is: The electrons must be attracted to each other.
To form a metallic bond, certain conditions must be met, including the presence of metal atoms, valence electrons, delocalized electrons, and a metal lattice structure.
Explanation:In order for metallic bonds to form, certain conditions must be met:
Presence of metal atoms: Metallic bonds occur between metal atoms.Valence electrons: Metal atoms have one or two valence electrons that are loosely held.Delocalized electrons: These valence electrons are not associated with any particular atom and can move freely throughout the metal lattice.Metal lattice structure: The metal atoms arrange themselves in a crystal lattice structure, with positive metal ions surrounded by a sea of delocalized electrons.When these conditions are met, the valence electrons are shared among all the metal atoms, resulting in the formation of a metallic bond. This bond gives metals their unique properties, such as high electrical conductivity and malleability.
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If an object had a mass of 5 kilograms, what would be the weight of the object measured on a spring scale in the unit of Newtons?
I don’t really really know
Weight is a unit of force.
Newtons measure force.
5 kg is a mass and is in kg. Kg and mass are independent of location. 5 kg is 5 kg on the moon, here on earth, on Jupiter and on Mars or anywhere else you care to name.
F = m*a
F = 5 * 9.81
F = 49.05 Newtons. This is how things should be weighed on planet earth.
Majority rule, first-come/first-served, and sharing equally are examples of _____ . productive resources non-market distribution methods opportunity costs
Non-market distribution method
non-market distribution methods, hope this helps. Have a good day.
100 points, brainliest, and free points if you answer all correctly
1.Use the diagram to answer the question.
What would happen if some of the red blood cells were placed in beaker B?
Water would move into the cells by osmosis, causing the cells to shrink.
Water would move out of the cells by osmosis, causing the cells to shrink.
Water would move into the cells by osmosis, causing the cells to swell.
Water would move out of the cells by osmosis, causing the cells to swell
2.
Use the diagram to answer the question.
What would happen if some of the red blood cells were placed in beaker A?
Water would move into the cells by osmosis, and the cells would swell.
Water would move out of the cells by diffusion, and the cells would shrink.
Water would move out of the cells by osmosis, and the cells would shrink.
Water would move into the cells by diffusion, and the cells would swell.
3.
What would occur if some of the red blood cells were placed in beaker C? Recall that red blood cells normally float in plasma.
The concentration of water inside and outside the cells would be equal, so no osmosis would occur.
The concentration of water inside and outside the cells would be equal, so no diffusion would occur.
The concentration of water inside the cells would be less than outside, so the cells would swell.
The concentration of water inside the cells would be greater than outside, so the cells would shrink.
4.
What is a function of water in a cell?
producing lipids and carbohydrates
assisting in the production of proteins
helping the cell move and grow
preventing rapid temperature changes
5.
The cell membrane and water are both involved in _____.
directing the cell’s activities and functions
the movement of materials into and out of the cell
preventing chemical reactions from taking place
making and packaging proteins for the cell
6.
The cell membrane and water are both involved in _____.
directing the cell’s activities and functions
the movement of materials into and out of the cell
preventing chemical reactions from taking place
making and packaging proteins for the cell
7.
Which are types of passive transport?
osmosis and diffusion
diffusion and engulfing
transport proteins and osmosis
engulfing and transport proteins
1. If the red blood cells are placed in beaker B, water would move out of the cells by osmosis and cause the cells to shrink. this is because the the solution is hyper tonic compared to the red blood cell.
2. If some red blood cells are placed in beaker A,
Water would move into the cells by osmosis and the cells would swell.
3. The concentration of water inside and outside the cells will be equal so no osmosis would occur. There is no osmotic pressure.
4. Water takes part in the production of lipids and carbohydrates.
5. The membrane and water are both involved in the movement of materials into and out of the cell. The membrane is semipermeable therefore it allows the transmission of materials into and out of the cell. water acts as a solvent for the materials entering the cell as in their original forms, they can not enter through the cell membrane pores.
6. The membrane and water are both involved in the movement of materials into and out of the cell. The membrane is semipermeable therefore it allows the transmission of materials into and out of the cell. water acts as a solvent for the materials entering the cell as in their original forms, they can not enter through the cell membrane pores.
7. OSMOSIS AND DIFFUSION are both examples of passive transport as the cells do not take part in the transport. It only occurs due to uncontrollable conditions that occur in a cycle in the cell.
If the red blood cells are placed in beaker B, water would move out of the cells by osmosis and cause the cells to shrink. this is because the the solution is hyper tonic compared to the red blood cell.
Water would move into the cells by osmosis and the cells would swell. The concentration of water inside and outside the cells will be equal so no osmosis would occur. There is no osmotic pressure. Water takes part in the production of lipids and carbohydrates. The membrane and water are both involved in the movement of materials into and out of the cell. The membrane is semipermeable therefore it allows the transmission of materials into and out of the cell. water acts as a solvent for the materials entering the cell as in their original forms, they can not enter through the cell membrane pores. The membrane and water are both involved in the movement of materials into and out of the cell. The membrane is semipermeable therefore it allows the transmission of materials into and out of the cell. water acts as a solvent for the materials entering the cell as in their original forms, they can not enter through the cell membrane pores. OSMOSIS AND DIFFUSION are both examples of passive transport as the cells do not take part in the transport. It only occurs due to uncontrollable conditions that occur in a cycle in the cell.
Lamars mom has a car with a 182 horsepower engine how many watts of power is that
182 Horsepower =
135,717.38 Watts
Mark as brainiest please
Answer:
135,722
Explanation:
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A glass jug can be used to play different pitched sounds by blowing air over the opening of the jug and vibrating the air molecules inside the jug. The sound fluctuates with the amount of liquid in the jug, similar to the length of a pipe organ. A musician wishes to play a higher-pitched sound with their jug. What should they do?
Force more air over the opening of the jub
Remove more liquid
Add more liquid
To increase the pitch of the jug sound, remove more liquid; doing so decreases the air column inside the jug which makes the vibration faster, thereby increasing the pitch.
Explanation:The pitch of the sound produced by a jug when blown across the top is determined by the column of air that can vibrate inside the jug. The longer the air column, the lower the pitch of the sound, analogous to how longer pipes in a pipe organ produce lower notes. Therefore, to play a higher-pitched sound with a jug, the musician should remove more liquid from the jug. By doing so, he decreases the air column which makes the vibration faster, thus producing a higher-pitched sound. It is important to note that forcing more air over the opening of the jug does not change the pitch of the sound but increases the volume while adding more liquid produces a lower-pitched sound.
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Help...
An electromagnet can be made by wrapping wire around which object?
Answer: The correct answer is ''nail".
Explanation:
Electromagnet is a temporary magnet. The electromagnet is made by wrapping the coils around the soft iron. Then, pass the current through it. In this way, It will act as a temporary magnet.
As long as the current passes through it it will retain its magnetic property. When the current is not flowing through it then it will lose its magnetism.
Iron is a ferromagnetic material. It will retain the magnetic property as long as the current flows in the electromagnet.
Therefore, an electromagnet can be made by wrapping wire around the nail.
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Why are all planets almost spherical in shape?
A) Because a planets gravity pulls equally from all sides
B) Because large bodies in space break apart due to gravity
C) Because gravity pulls all material towards the edge of a planet
D) Because rotation pushes outward the material inside the planet
A bullet is shot from a gun at an angle of 30° it’s horizontal component is 40 m/s what is the actual velocity? Make sure your calculator is in degree mode
The answer is:
[tex]46.19\frac{m}{s}[/tex]
Why?Since we know the angle and the horizontal component (x-axis component) of the initial velocity, we can calculate the actual velocity (initial velocity) using the following equation:
[tex]Vo_{x}=Vo*Cos\alpha[/tex]
Where:
[tex]Vo_{x}=40\frac{m}{s}\\Vo= Initial velocity\\\alpha = angle= 30 (degrees)[/tex]
So, from the equation we can calculate Vo,
[tex]Vo_{x}=Vo*Cos\alpha\\\\\frac{Vo_{x}}{Cos\alpha}=Vo[/tex]
Then, by substituting we have:
[tex]Vo=\frac{40\frac{m}{s} }{Cos30}=\frac{40\frac{m}{s}}{0.866}=46.19\frac{m}{s}[/tex]
Have a nice day!
A train is accelerating at a rate of 2 m/s. If it's initial velocity is 20 m/s, what is its velocity after 30 seconds?
We don't know anything about the direction of the track, so we can't say anything about the train's 'velocity'. The best we can do is talk about its speed.
Speed = (initial speed) + (acceleration) x (time spent accelerating)
Speed = (20 m/s) + (2 m/s²) · (30 sec)
Speed = (20 m/s) + (60 m/s)
Speed = 80 m/s
(This is about 179 miles per hour, so if this is not a bullet train of some kind, then get ready for an ugly crash.)