Answer:
The strength of the charge and the distance between the two bodies.
Explanation:
According to coulombs law, electrical force is calculated as follows:
F = k (Q1 ×Q2)/ d²
where Q1 and Q2 represents the amount of charge between the two bodies while d is the distance between then.
This means the electrical force is directly proportional to the electrical charge of the bodies and inversely proportional to the square of the distance between them.
Bodies with high amounts charges will have stronger electrical forces between them than bodies with less electrical charges.
Charged bodies near each other will have stronger electrical forces between them than bodies far apart.
What type of circuit is illustrated?
A.a closed series circuit
B.an open series circuit
C.an open parallel circuit
D.a closed parallel circuit
An open series circuit is an electrical circuit in which the electric current does not circulate because the switch is open interrupting the flow of current. There must be a closed path for the current to flow through the circuit.
A current of 1.8 A delivers 2.5 C of charge.
COM
How much time was required?
A.O 0.70 s.
B.O 0.72 s
C.0 1.45
D.0 4.5 5
" 1.8 Ampere " means "1.8 Coulomb/sec".
(2.5 C)/(1.8 C/sec) = (2.5/1.8) (s) = 1.39 sec
I honestly don't see where any of the choices comes from, but the closest one is (C) 1.45 sec.
Answer:
1.4 seconds, which is the third option
Explanation:
Current is defined as the flow of charge per time
Therefore, the equation that relates current, charge and time can be expressed as follows:
I = ΔQ / ΔT
where:
I is the current given = 1.8 ampere
ΔQ is the charge given = 2.5 coulomb
Δt is the time required for the flow of the given charges to give the 1.8 ampere.
Substitute with the givens in the above equation to get the time as follows:
1.8 = 2.5 / ΔT
ΔT = 2.5 / 1.8 = 1.38888 which is approximately 1.4 seconds
Which image illustrates refraction
Answer:
B
Explanation:
The image that illustrates refraction in the question above is : ( B ) Image B
Definition of RefractionRefraction is the change in direction of wave passing through a medium due to change in speed of the traveling wave. The first image represents a reflection as the wave does not pass through the medium but bounces off the medium.
The second image shows that the wave passes through the medium but changes its direction, therefore it represents refraction.
Hence, we conclude that the image that illustrates refraction in the question above is : ( B ) Image B
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HCI is___
An acid
A base
A salt
Answer:
Explanation:
As far as I know, when H is the metal, the compound is an acid.
A base has OH as its non metal as in KOH.
A salt has neither.
15. One purpose of the tread pattern on a tire is to
a reduce tire wear.
b. reduce traction
C. allow water to flow away from the tire.
d. look impressive.
Answer:
The answer would be C.
The correct answer is C. Allow water to flow away from the tire. Tread patterns improve handling, traction, and performance. Wet conditions are drained by the tread design. To prevent hydroplaning, this channels water.
Let water drain from the tyre. On wet roads, a tire's tread pattern improves traction and safety. Water is dispersed away from the tire's contact patch by tread grooves and channels. Hydroplaning prevention is this. Water can prevent traction and cause sliding on wet roads. Water is evacuated through the tread pattern's channels, retaining road contact and grip. For road safety and performance in all weather situations, the tread pattern delivers traction on dry roads and superior handling.
The tread pattern on a tire serves several purposes, including providing traction on different road surfaces, improving handling, and enhancing the tire's performance in various weather conditions. One essential function of the tread pattern is to allow water to flow away from the tire's contact patch during wet conditions. This helps prevent hydroplaning by channeling water away and maintaining proper contact between the tire and the road, ensuring better grip and safety.
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what’s the mass of an object that weighs 32 newton’s
Answer:
m
≈
3.878
Kg
Explanation:
By Newton's second law,
F = m a
So, W = m g
m = W /g
m=32/ 8.25 Kg or 3.878 Kg (approx)
How does nuclear energy work? Explain
Nuclear energy is produced through controlled nuclear fission in reactors, where large uranium nuclei are split by neutrons, releasing energy to convert water to steam that turns turbines and generates electricity. Fission and fusion are two different processes that release energy from the nucleus of an atom. The entire process is meticulously controlled to provide a sustainable and powerful source of energy.
Nuclear energy is produced through the processes of nuclear fission or fusion. In a nuclear power plant, uranium is used in fuel rods, where its atoms are split apart by neutrons. When uranium nuclei split, they release energy, radiation, and more neutrons. This results in a controlled chain reaction. The energy released during this process is used to heat water, which then turns into steam. The steam drives a turbine connected to a generator, thus producing electricity.
There is a crucial difference in the types of nuclear reactions used for energy. In fission, large uranium nuclei absorb neutrons and break down into smaller nuclei, releasing a significant amount of energy. In fusion, which is not yet commercially viable, smaller nuclei are forced together to form larger nuclei, which also releases energy.
It's important to control the speed of the fission reaction to sustain the chain reaction for energy production and to prevent uncontrolled energy releases like those in atomic bombs. Natural uranium must first be enriched with uranium-235 to be effective in reactors. On the other hand, scientists continue to research how to achieve controlled fusion, which also has the potential to provide significant amounts of energy.
when solid surfaces slide over each other the kind of friction that occurs is called ____ friction
Answer:
sliding friction
Explanation:
Hello There!
When two objects are moving relative to one another while rubbing together, the frictional force between them is called kinetic friction.
2.Which choice most accurately explains what happens to the bonds between atoms when water changes to steam, and what becomes of the energy added during this phase change?
When water changes to steam bonds between molecules are created. After reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms.
When water changes to steam bonds between molecules break apart. After reaching the boiling point, energy is used to break bonds, but does not affect the kinetic energy of the atoms.
When water changes to steam bonds between molecules are created. After reaching the boiling point, energy is used to break bonds, but does not affect the kinetic energy of the atoms.
When water changes to steam bonds between molecules break apart. After reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms.
Answer:
Explanation:
The conversion of water into steam involves various factors and changes.
When heat is applied to water, the bond between the molecules start to loosen up and molecules starts separating hence it from changes from liquid to gas or steam.
At this time molecules have greater kinetic energy which is given to them in form of heat. Hence apart from all options given, D is the correct one which states that :
"When water changes to steam bonds between molecules break apart. After reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms."
Answer:
When water turns to steam,
D) the water absorbs energy which causes the water molecules to have more kinetic and potential energy changing their configuration from a liquid to a gas.
Buoyancy is a force that always acts in an
fluid on a body placed in the fluid,
direction exerted by a
Buoyancy is a force that always acts in an upward direction exerted by a fluid on a body placed in the fluid
Hope this helps :)
Answer:
Explanation:
Buoyancy is a force that always acts in the upward direction against the weight of the immersed or semi-immersed object in the fluid. In any fluid( air or water) column pressure increases as we go deeper because of the overlying fluid. Here magnitude of the buoyancy force is proportional to the pressure difference.
If a textbook weighs 37.2 N on Venus, and the book has a mass of 4.4 kg, what is the strength of gravity on Venus?
8.9 m/s2
8.9 m/s
I don't have enough information,
9.8 m/s2
[tex]F=ma[/tex]
Where F is force, m is mass and a is acceleration.
[tex]37.2N=4.4kg\cdot a\Longrightarrow a=\dfrac{37.2N}{4.4kg}=\boxed{8.45\dfrac{m}{s^2}}[/tex]
Hope this helps.
r3t40
Which best describes the term derived unit in SI?
1.one of the metric base units that is the foundation of SI
2.a conversion factor between base units
3.a specific combination of base units with its own name
4.a prefix multiplier for a base unit
Derived units in SI are specific combinations of base units with their own unique names.
Explanation:The term 'derived unit' in SI refers to option 3: a specific combination of base units with its own name. This means that derived units are formed by multiplying or dividing the base units to create new units with their own unique names. For example, the unit of speed, meters per second (m/s), is a derived unit that combines the base unit of distance (meter) with the base unit of time (second).
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A derived unit in SI is a specific combination of base units with its own name.
Explanation:The correct option that describes the term 'derived unit' in the International System of Units (SI) is 3. A derived unit is a specific combination of base units with its own name. It refers to units that are built from the seven base units, such as meters, seconds, and kilograms, and have their own unique names. These units are formed by multiplying or dividing the base units and are used to measure quantities other than the base quantities. For example, the unit of speed is meters per second (m/s), which is derived by dividing the unit of distance (meter) by the unit of time (second).
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Conventional prescription eyeglasses are considered sufficient PPE for eye protection
Answer:
False
Choices:
A) True B) False
Technician A says that if the cooling system has been exposed to the air for more than 24 hours, the drier should be replaced. Technician B says that repairs should be made before refrigerant is evacuated from a system. Who is correct?
A. Both Technicians A and B B. Technician B C. Technician A D. Neither Technician A nor B
Answer:
Option A. Both Technicians A and B
Explanation:
Both technicians are correct. There are fundamentals that have to be understood regarding cooling systems.
The cooling system depends on a thermodynamic system that involves the expansion and compression of the cooling fluid. In addition, the coolant is the one that circulates in the pipes influencing convention currents between the pipes (coiled pipes) or otherwise. It is noteworthy that the dryer be kept out of the reach of moisture as this will corrode. Therefore, a drier that comes in contact with moisture needs to be replaced as this brings about corrosion.
In addition, it is also very important to remove the refrigerant from the system so that there will not be extreme fluctuations in temperature and pressure. In order to be on the safe side, the refrigerant needs to be replaced.
Final answer:
Both Technician A and Technician B are correct regarding AC system maintenance. Technician A advises replacing the drier after long exposure, while Technician B recommends making repairs before evacuating the refrigerant. Budgeting 1.1 hours of service time may need to be re-assessed based on statistical analysis.
Explanation:
The question seems to pertain to the maintenance and repair practices associated with air conditioning (AC) systems, touching on subjects like cooling system exposure, drier replacement, and refrigerant evacuation. Technician A advises that a drier should be replaced if the cooling system has been exposed to air for more than 24 hours. This is generally correct because prolonged exposure to moisture can contaminate the drier, which is tasked with absorbing moisture in the system. On the other hand, Technician B suggests that repairs should be made before refrigerant is evacuated. This is also generally correct as it prevents wasting refrigerant and ensures that any leaks or issues are dealt with prior to recharging the system. Therefore, the correct answer is that both technicians are correct.
When it comes to air conditioner maintenance, as described in the reference, understanding the average servicing time and standard deviation is crucial for planning and resource allocation. Budgeting 1.1 hours per technician based on the company's service records may or may not be sufficient depending on the actual time taken to service units, which varies according to a normal distribution. If the normal distribution assumption holds, using the mean and standard deviation provided, one can use statistical analysis to determine the probability that the average service time will exceed 1.1 hours.
In AC systems, the condenser is the component responsible for converting gaseous refrigerant back into a liquid form. This process releases the absorbed heat to the outside environment.
The efficacy of an air conditioner is often measured in terms of its thermal energy removal capacity, with common units being watts or BTU/hr. AC systems can be categorized as vapor compression systems, vapor absorption systems, and open-loop evaporative systems, all of which use the evaporation of fluid to remove heat from the air.
In electricity distribution, why is low voltage safer for consumers?
Answer:
Explanation:
The transmission lines contain about 2500 volts. It is dangerous enough to get zapped by 120 volts. Think what 20 times that much would do to you.
Which describes time dilation?
A. The faster an object moves, the more stretched time becomes.
B. The more slowly an object moves, the more stretched time becomes.
C. The faster an object moves, the more time it takes for light to travel a given distance.
D. The faster an object moves, the less time it takes for light to travel a given distance.
Answer:
A. The faster an object moves, the more stretched time becomes.
Explanation:
According to special theory of relativity, when there is relative motion between two objects, an observer observes more stretched time with respect to another frame. This slowing down of time becomes apparent when the object moves very fast (close to the speed of light).
Thus, option A is correct.
The faster an object moves, the more stretched time becomes. The correct answer is A. Time dilation is a phenomenon predicted by the theory of relativity, both special and general relativity.
It states that time can appear to move at different rates for objects in different states of motion or in different gravitational fields.
According to special relativity, when an object moves at a high velocity relative to another object, time appears to slow down for the moving object from the perspective of the stationary observer. This effect is known as time dilation. As the velocity of the object increases, time dilation becomes more pronounced, and time appears to be "stretched" or slowed down for the moving object.
This phenomenon has been experimentally confirmed through various experiments, such as the measurement of the lifetimes of fast-moving particles in particle accelerators.
Therefore, option A is the correct description of time dilation: The faster an object moves, the more stretched time becomes.
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A toy airplane, flying in a horizontal, circular
path, completes 10. complete circles in 30.
seconds. If the radius of the plane’s circular path
is 4.0 meters, the average speed of the airplane is
(1) 0.13 m/s (3) 1.3 m/s
(2) 0.84 m/s (4) 8.4 m/s
Answer:
8.4 m/s
Explanation:
The toy completes 10 circle in 30 seconds. So its frequency of revolution is
[tex]f=\frac{10}{30 s}=0.33 Hz[/tex]
The periof of revolution is the reciprocal of the frequency, so
[tex]T=\frac{1}{f}=\frac{1}{0.33 Hz}=3 s[/tex]
The radius of the circular path is
r = 4.0 m
So the total distance covered by the toy in one circle is the length of the circumference:
[tex]2\pi r[/tex]
And so the average speed is
[tex]v=\frac{2\pi r}{T}=\frac{2\pi (4.0 m)}{3 s}=8.4 m/s[/tex]
The average speed of the airplane is 8.4 m/s
Further ExplanationGiven :
number of rotation = N = 10
time intervals = Δt = 30 s
radius = R = 4.0 m
Unknown :
average speed = v = ?
Solution :
v = ω × R
v = ( θ / Δt ) × R
v = ( 10 × 2π / 30 ) × 4
v = (8π / 3) m/s
v ≈ 8.4 m/sLearn moreNewton's Law of Motion: https://brainly.com/question/10431582
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Answer detailsGrade: High School
Subject: Physics
Chapter: Dynamics
Keywords: Newton, Law, Impulse, Work
state amperes law of induction
Ampere's Law states that for any closed loop path, the sum of the length elements times the magnetic field in the direction of the length element is equal to the permeability times the electric current enclosed in the loop.
Ampere's Law states that the line integral of the magnetic field around an electric current is proportional to the current, helping in calculating the magnetic field generated by current-carrying wires.
Ampere's Law is a fundamental physical law in electromagnetism, stating that the line integral of the magnetic field (B) around an electric current is proportional to the current (I). This means that for any closed loop, the sum of the magnetic field dot products along the loop is equal to the permeability constant (µ₀) times the current passing through the loop. Mathematically, Ampere's Law is expressed as ∫ B ⋅ dl = μ₀I, where B is the magnetic field, dl is a differential element of the loop C, and μ₀ is the magnetic constant.
Ampere's law helps in determining the magnetic field generated by complex configurations of electric current by breaking it down into segments, each producing a magnetic field as if it was from a long straight wire. The resultant magnetic field is the vector sum of the fields due to each of these segments.
Which data set has the largest range?
A. 1,5,2,4,3,5
B. 5,6,4,5,6,4
C. 8,9,1,2,3,4
D. 3,9,5,7,3,6
Answer:
Option C
Explanation:
We have to check range of all options first
For A:
Largest Value: 5
Smallest Value: 1
So range = Largest value - smallest value
5-1 = 4
For B:
Largest Value: 6
Smallest Value: 4
Range = 6-4 = 2
For C:
Largest Value: 9
Smallest Value: 1
Range = 9-1 = 8
For D:
Largest Value = 9
Smallest Value = 3
Range = 9-3=6
So, the data set in option C has the largest range
If a liter of water is heated from 20 C to 50 C, what happens to its volume?
a. The volume decreases.
b. The volume increases.
c. The volume first increases, then decreases.
d. The volume first decreases, then increases,
Please select the best answer from the choices provided
Answer:
The volume increases
Choice B is correct
Explanation:
If a liter of water is heated from 20 C to 50 C its volume will increase.
Matter exists in 3 states;
Solids
Liquids
Gases
Matter expands when heated, consequently occupying more space. This implies that volume will increase
Heating a liter of water from 20 C to 50 C generally causes an increase in its volume due to the thermal expansion of water.
Explanation:When a liter of water is heated from 20 C to 50 C, its volume generally increases due to the thermal expansion property of water. When water is heated, its molecules move faster and occupy a larger space, causing an increase in its volume. Therefore, answer b. The volume increases, is the best choice among the options given.
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2) Why do satelites not
Fall while revolving
around the earth?
Answer:
Because they are moving to fast for Earth's gravity to pull it down.
A vertical column within the periodic table represents a:
Answer:
A vertical column in a periodic table is called a group, I hope you found this answer helpful.
Answer:
The answer is: a group.
Explanation:
The periodic table can be divided into groups and periods. The periods are the horizontal rows, and the elements in the same period have the same number of orbitals, and similar molecular weights. The groups are the vertical columns, and the elements in the same group have the same atomic valence.
A car moving south speeds up from 10 m/s to 40 m/s in 15 seconds. What is the car's acceleration?
O 2 m/s
O 15 m/s
O 30 m/s
050 m/s
Answer: [tex]2m/s^{2}[/tex]
Explanation:
Assuming the car is moving only in one direction (to the South), its acceleration [tex]a[/tex] is given by the following formula, which expresses the variation of the velocity in time:
[tex]a=\frac{\Delta V}{\Delta t}[/tex] (1)
Where:
[tex]\Delta V=V_{2}-V_{1}=40m/s-10m/s=30m/s[/tex] is the variation in velocity
[tex]\Delta t=t_{2}-t_{1}=15s-0s=15s[/tex] is the variation in time
Rewritting (1) with the calculated values:
[tex]a=\frac{30m/s}{15s}[/tex] (2)
[tex]a=2m/s^{2}[/tex] This is the acceleration of the car
computer programs like spreadsheets can be used to help organize and analyze data. True or false
Answer:
The statement is TRUE
Explanation:
computer programs like spreadsheets can be used to help organize and analyze data. Regression Analysis can be carried out in Excel to determine the relationship between two quantitative variables.
Computer programs like spreadsheets are used to organize and analyze data is a TRUE statement.
Explanation:
The spreadsheets or the database access programs of computer are the ones which helps us to organize a set of data significantly and thus helps to analyze them easily. Taking instance of spreadsheet, each data represented by the user defined parameter and set of value which represents the parameter.
Each of these are well input in single cell and the cell are spread over sheet in form of rows and column. This helps to give a good organized set of data representation and thus helps in analysis easily.
A wheel has a radius of 9 centimeters and an axle radius of 3 centimeters. The IMA of the system is ___?
9
0.33
3
27
Answer:
Answer is C.
Explanation:
To calculate the IMA for a wheel and axle, find the ratio of the larger radius to the smaller radius:
IMA = R/r
IMA = 9/3
IMA = 3
Critical mass is the ___ of material required to produce a chain reaction.
A.) minimum amount
B.) atomic mass
C.) precise amount
D.) maximum amount
Answer:A
Explanation:
Answer:
Minimum amount
Explanation:
There's no way for me to really explain it well but its the correct a p e .x answer
What does the negative sign in F = –kx mean?
It says that the force of a spring is always opposite to the direction in which you stretch it or compress it. (the direction of 'x')
In other words, a spring that's disturbed always tries to put itself back to it's normal length, where x would be zero.
Please help me calculate the frequency of a photon 434E-9 and the speed of light 3E8m/s
Answer:
f = 6.912 E14 Hz
Explanation:
The speed of the wave is defined as
speed = wavelength*frequency
the frequency of the photon is defined as
f = speed / wavelength
f = 3 E8 m/s / 434 E-9 m
f = 6.912 E14 Hz
Please Help!!!
Shondra takes notes in class.
I. Electromagnetic Waves
II. The ability to work
- Has many forms
- Mechanical
III. Potential energy
- Chemical
- Elastic
- Gravitational
Kinetic energy
- Energy of movement
- Electrical
IV. Nuclear
- Radiant
- Thermal
One line of Shondra’s notes is irrelevant to the rest of her notes. Which line is about a different topic than the rest of Shondra’s notes?
A - I
B - II
C - III
D - IV
Answer:
I. Electromagnetic waves
Explanation:
Answer:
I. Electromagnetic waves
Explanation:
Randomly assigning students to two different groups in an experiment on
memory would be:
A. an important measure for controlling bias.
B. an important measure to counteract interviewer bias.
C. an important measure to discourage under-coverage.
D. an important measure to counteract wording bias.
Answer:
A.) an important measure for controlling bias.
Explanation:
Randomly assigning students to two different groups in an experiment on
memory would be an important measure to discourage under-coverage.
Random assignment of students to two different groups in an experiment on memory is an important measure for controlling bias as it eliminates systematic differences between the groups, allowing us to attribute any observed differences to the independent variable manipulation.
Explanation:Randomly assigning students to two different groups in an experiment on memory would be an important measure for controlling bias. With random assignment, all participants have an equal chance of being assigned to either group, which makes it unlikely that there are systematic differences between the groups. This allows us to assume that any differences observed between experimental and control groups result from the manipulation of the independent variable.