Answer:
They have 8 electrons in their outermost shell(except for Helium)
Explanation:
The noble gases are unreactive and stable because they have completely filled orbitals and have 8 electrons in their outermost shell.
Therefore
They have 8 electrons in their outermost shell(except for Helium)
a 50g sample decays to 6.25 g in 6hrs. what's the half life
Answer:
Nuclear half-life expresses the time required for half of a sample to
Explanation:
401.06
A capacitor that uses 0. 40- mmmm -thick paper as a dielectric is charged to the maximum sustainable voltage. What is the strength of the induced electric field?
The maxiumum strength of the induced electric field in the capacitor that uses thick paper as dielectric material is 16 x 10⁶ V/m.
What is maximum electric field strength?
The maximum electric field strength above which an insulating material begins to break down and conduct is called its dielectric strength.
The dielelectric strength of paper is given as;
E = 16 MV/m = 16 x 10⁶ V/m
Thus, the maxiumum strength of the induced electric field in the capacitor that uses thick paper as dielectric material is 16 x 10⁶ V/m.
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6. Which point on the skate park has the highest potential energy?
7. Which point on the skate park has the highest kinetic energy?
8. Where would the skater's speed be the fastest?
9. Where would the skater's speed be the lowest?
10. What you increasing the friction of the surface do to the skater's speed?
Answer:
6) Point G as it is the steepest.
7) Point G and F.
8) Between D and F.
9) Between C and D.
10) The skater will go slower with more friction and faster with less.
Explanation:
The block is pulled to a position xi = 6. 20 cm from equilibrium and released. Find the potential energy stored in the spring when the block is 6. 20 cm from equilibrium
The value of potential energy stored in the spring when the block is 6. 20 cm from equilibrium is 1.65 J.
What is elastic potential energy?The elastic potential energy is the energy which is stored in a stretched spring. The elastic potential energy of a spring can be found by the following formula.
[tex]U_s=\dfrac{1}{2}kx^2[/tex]
Here, (k) is spring constant and (x) is the displacement of the spring.
The block is pulled to a position xi = 6. 20 cm from equilibrium and released. Thus,
[tex]x=6.20\rm \; cm[/tex]
Divide with 100 to convert its unit in meter,
[tex]x=0.062\rm \; m[/tex]
Let the value of spring constant is 860 N/m. Thus, put the values in the formula,
[tex]U_s=\dfrac{1}{2}kx^2\\U_s=\dfrac{1}{2}(860)(0.062)^2\\U_s=1.65\rm\; J[/tex]
Thus, the value of potential energy stored in the spring when the block is 6. 20 cm from equilibrium is 1.65 J.
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Forces (select all that apply) *
1:make objects move
2:have the unit of Newtons (N)
3:can be positive or negative in value
4:can go in any direction (North South East West)
Explanation:
1, 2,3, and 4 is correct.
Forces is a push or pull on an object. It can move an object.
Forces have a unit of Newton's
Force is a vector so it has direction meaning it can positive or negative, or north, South, East west
I need severe help
a cat ran west for 30 meters and it took them 5 seconds, what was the average speed of the cat? Don’t forget units!
At approximately what time would a first quarter moon rise?.
Answer:
the internet says it would be about noon
Explanation:
i dont know if its right but if it is could you please give me brainliest
What is happening to the potential energy as the ice is melting
When ice is melting, there is a change in the energies in it. Its potential energy increases, but the thermal kinetic energy or temperature remains constant.
What is Melting?Melting is the process when a solid or liquid changes its state. Melting requires latent heat to convert its phase from solid to liquid or liquid to vapor.
Therefore, when ice is melting, Its potential energy increases.
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Jonathan and Cody’s older brother Josh, who is pictured in the Figure below, is standing at the top of a half-pipe at Newton’s Skate Park. Gravity is exerting a downward force on the skateboard as seen in the picture. Why doesn’t it tip over the edge and start rolling down the side of the half-pipe?
In order to begin moving a Mass (Accelaration) will solve for the force required to move the skateboard. Mass(9.8) will give you the force needed to move the skateboard originally
What is acceleration ?Acceleration can be defined as the rate of change of velocity with respect to time, is a vector quantity associated with both magnitude and direction.
Acceleration can be up two types such as Uniform and Non-uniform acceleration, in a circle where speed remains constant but the direction is changing followed by velocity changes, and the body is said to be accelerated.
The average acceleration can be defined as the total change in velocity in the given interval period of time means the total time taken for the change. For a given interval of time, it is represented as ā.
Instantaneous acceleration can be defined as the ratio of change in velocity in a given time interval such that the time interval goes to zero.
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As people age, they become unable to control their cardiorespiratory fitness levels.
Answer:
False
Explanation:
In an internal combustion engine, heat flow into a gas causes it to
.
Answer:
Along path BC of the Otto cycle, heat transfer Qh into the gas occurs at constant volume, causing a further increase in pressure and temperature. This process corresponds to burning fuel in an internal combustion engine, and takes place so rapidly that the volume is nearly constant.
What is Sun flare ?
Investigation about Sun flare from NASA
Answer:
An powerful concentrated outburst of electromagnetic radiation in the Sun's atmosphere is known as a Sun flare. They are common in active regions, and they are typically accompanied by coronal mass ejections, solar particle events, and other solar phenomena.
what phrase describes scientific law
A phrase which describes a scientific law is: a statement of how volume is related to its temperature.
What is a scientific law?A scientific law is a type of scientific statement and it can be defined as a statement of fact that is generally and universally accepted to be true and verified because it has always been proven and observed to be true.
This ultimately implies that, a statement of how volume is related to its temperature is a phrase which describes a scientific law.
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what is the kinetic energy of a 500 kg car moving at 18 m/s?
Answer:
81000 j
Explanation:
KE = 1/2 m v^2 = 1/2 500 18^2 =
Daniel has been describing situations about being stalked by a government agency that is trying to recover information implanted in his brain. he will also babble incoherently, soil his clothing with excrement, and hold a statue-like pose for hours at a time. daniel can most likely be diagnosed with __________ schizophrenia. a. paranoid b. catatonic c. disorganized d. undifferentiated
He will also babble incoherently, soil his clothing with excrement, and hold a statue-like pose for hours at a time. Daniel can most likely be diagnosed with undifferentiated schizophrenia.
What is the worst type of schizophrenia?
Schizophrenia called hebephrenic is the most serious of all and affects more young individuals, between 15 and 25 years of age. The disorder is marked by symptoms such as disturbed affect, irresponsible and unpredictable behavior, disorganized thinking, and incoherent speech.
Undifferentiated schizophrenia — this is the case for patients who may develop some of the characteristics of the other types, but do not fit neatly into any of them.
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Answer:
undifferentiated schizophrenia
Explanation:
The mass number of an isotope of uranium is 238, and its atomic number is 92. which symbol best represents this isotope of uranium? subscript 92 upper u. superscript 238 subscript 92 upper u. superscript 92 subscript 238 upper u. superscript 92 upper u.
The symbol that represents the isotope that has a mass number of 238, and an atomic number of 92 is 238 subscript 92 upper u.
What is an isotope?Isotopes are any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.
This means that isotopes possess different mass numbers but the same atomic number.
According to this question, the mass number of an isotope of uranium is 238, and its atomic number is 92. This means that the symbol of this isotope is as follows: 238/92 U.
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Answer:
B. [tex]\frac{238}{92}[/tex] U
Explanation:
edge 2022
Hello please answer this I need it right now
Nonsense:report
Right answer:brainliest
Answer:
do you have an answer key
Explanation:
a ball on a string is swung overhead in a horizontal circle with a radius of 0.66 m. what speed (in m/s) does the ball need to maintain for there to be a centripetal acceleration of 23 m/s2?
Answer:
The ball is moving in a horizontal circle.
The force acting towards the center of the circle is
F = M a = M * V^2 / R
a = V^2 / R simplifying equation
V = (a / R)^1/2 = (23 / .66)^1/2 = 5.90 m/s
Suppose that you had an electrically charged stick. If you divided the stick in half, each half would have half the original charge. If you split each of these halves, each piece would have a quarter of the original charge. Can you keep on dividing the charge in this manner forever
Because charge is quantized, the answer is no.
Your driver's license is at risk of being cancelled if you: O A. Lied on the license application. O B. Are caught driving under the influence. O C. Cause an accident that injures another person. O D. Have more than three traffic violations in one year
Your driver's license is at risk of being cancelled if you have more than three traffic violations in one year. The correct option is D.
What is driving license?The license by the central government to an individual to travel on road by his own vehicle on terms and conditions to be strictly followed.
When a driver is moving with his vehicle and come across the traffic signal, he must follow them. If he violates the traffic signals more than three times, he will get his license cancelled.
Thus, your driver's license is at risk of being cancelled if you have more than three traffic violations in one year. The correct option is D.
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Can someone please answer this, ill give you brainliest Would be very appreciated.
Answer:
Option 3
Explanation:
As the roots of the plant hold soil in place, it helps prevent soil erosion.
The other options are true, but they are not correct explanations as to why plants help prevent erosion.
A cannonball weighs 124.0 N in air, 89.0 N in salt water, and 30.0 N in an unknown liquid, Find the densities of the following: The cannonball, and the unknown liquid
The densities of the cannonball and the unknown liquid are 3.54kg/m³ and 2.686 kg/m³.
What is the buoyant force?When an object is fully or partially submerged in liquid, the vertical upward thrust is acting on the object, this force is called the buoyant force.
Salt Water exerts a buoyant force to the cannon ball = 124−89 = 35N, which equals the weight of water displaced.
The mass of water displaced is
W/g =35/10 =3.5 kg.
Since the density of salt water is 1kg/L, the volume displaced is 3.5L.
Therefore the density of the cannon ball is
=(124/10) /3.5 =3.54kg/L = 3.54kg/m³
The unknown liquid exerts a buoyant force of 124−30=94 N.
The density of this liquid is (94/10) /( 3.5 )=2.686 kg/liter = 2.686 kg/m³
Thus, the densities of the cannonball and the unknown liquid are 3.54kg/m³ and 2.686 kg/m³.
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matter is any thing that has mass and occupies space
Answer:
yes omg u are so handsome
Can someone please answer this, ill give you brainliest Would be very appreciated.
Answer:
Fuel switching
Explanation:
Adaptation
It denotes to be changed according to the change happening in surroundingsIt also denotes not to run away from danger rather than adapting to live with the fear.We know fuel will be finished one day so we are shifting to new fuel sources.
Why is red the last color seen at sunset?
A. It is bent by raindrops.
B. It is bent the most by the air.
C. It is scattered the least by the air.
D. It reflects off the atmosphere.
Answer: Within the visible range of light, red light waves are scattered the least by atmospheric gas molecules. So at sunrise and sunset, when the sunlight travels a long path through the atmosphere to reach our eyes, the blue light has been mostly removed, leaving mostly red and yellow light remaining.
Explanation:
A ringing bell is located in a chamber. when the air is removed from the chamber, why can the bell be seen vibrating but not be heard?
Answer:
sound requires a medium to be propagated
Explanation:
sound is a mechanical wave and thus requires a medium to be propagated. Air this case is a medium of travel for the ringing bell in the chamber that is why sound can be heard. When air in the chamber it becomes a vacuum that is why sound is not heard
What could Alex do to make the reaction happen faster than normal?
Answer:
Chris lives farther from the school than Alex lives, and Chris walked to school at a faster rate than Alex walked.
Explanation:
the latent heat of fusion of a substance is the amount of energy associated with doing which of the following to 1 kg of the substance
A. Buring it completely
B. Raising its temperature 1 c
C. Boiling it at its boiling point
D Melting it at its melting point
Answer:Boiling at its boiling point
Explanation:
Find the equivalent resistance of this circuit.
Step-by-step explanation :
Here we just need to see the resistors which are connected in series combination. (Remember that you need not to use the potential difference in this question because we aren't asked to calculate the current).
As we know that,
Rs = R1 + R2 ... Rn>> Rs = 50 + 100
>> Rs = 150Ω
Therefore,
Resistance in series combination is of 150Ω.Compared with the atmosphere of venus, the martian atmosphere has.
Answer:
I think it would be 0.13. I'm not 100% sure.
