one very small uniformly charged plastic ball is located directly above an identical very small uniformly charged plastic ball in a test tube (see figure). the balls are in equilibrium a distance d apart. if the charge on each ball is doubled, the distance between the balls in the test tube would become a) d/2 b) d c) 2d d) 4d e) 8d d
Answers
The distance between the balls must double to reduce the force by a factor of 4. Therefore, the correct answer is (c) 2d.
According to Coulomb's law, the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
In this case, since the balls are in equilibrium, the forces between them must be equal and opposite. If the charges on each ball are doubled, the force between them will be quadrupled (2^2). To maintain equilibrium, the distance between the balls must increase to compensate for the increased force.
Using the inverse square law, the distance between the balls must double to reduce the force by a factor of 4. Therefore, the correct answer is (c) 2d.
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Related Questions
Physical science help pls I struggling
Answers
The cost of using 50 W for one day or 24 hours is dollar 0.12. The cost of using 800 W for 1 hour is 0.08 dollar.
What is power?Power is the rate of work done energy of an object. Given that the cost of using 1 KWhr energy is dollar 0.10.
Then cost of using 50 W or 0.05 KW in 24 hours is
0.05 × 24 × 0.10 = 0.12 dollar
Cost of using 800 W or 0.08 KW per hour is 0.08 KWhr × 0.10 = dollar 0.08
Similarly, the cost of using 150 W in one month is find as follows:
150 W = 0.15 KW
energy used = 0.15 × 30 × 24 hrs
cost = 0.15 × 30 × 24 hrs × 0.10 = dollar 10.8
The energy causing a cost of 2.5 dollar is 2.5/0.10 = 25 KWhr
power = 25 KWHr/24 hrs = 1.04 KW.
The energy causing a cost of 4 dollars is 4/0.10 = 40 KWhr
power =40 KWHr/24 hrs = 1.6 KW.
The energy causing the cost of 3 dollars = 3/0.10 = 30 KWhr
then time = 30/100 W = 0.3 hr.
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Where in the dwelling policy is it stated that earth movement, landslide, mine subsidence, and mudflow are not covered unless resulting from direct loss by fire or explosion?
Answers
common exclusions, Due of their catastrophic character, the aforementioned risks—earth movement, landslide, mine material, and mudflow—are not covered by the dwelling insurance.
The Basic Form is designed on a named dangers basis and only covers the risks of fire, lightning, and internal explosion. It excludes theft and damage to trees, shrubs, and plants.
The Dwelling Policy's Coverage C for Personal Property provides coverage for damaged household and personal property that is being transported between the insured's old and new homes.
What is Dwelling Policy's?
The portion of your homeowners insurance policy known as dwelling coverage, or "dwelling insurance," may assist in covering the cost of repairing or rebuilding the physical structure of your house if a covered hazard causes damage to it.Farm property is not eligible, mobile homes must be firmly affixed to the foundation, and only incidental business is covered if the residence is utilized primarily for domestic purposes.To learn more about Dwelling Policy's visit: https://brainly.com/question/14319237
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How many minutes in 18 years? (Remember: 1 year = 365.25 days). Also, on these problems use a
bridge/table to organize your values
4.9671280 sec
4,9674280 min
9.467 280 sec
9 467280 min
Answers
answer:
in 18 years there are 9,467280 minutes
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Which electromagnetic waves have the shortest wavelength and the highest frequency?
waves
Answers
Answer: Gamma rays (violet) have the shortest wavelengths and the highest frequencies.
Explanation: The wavelength of the gamma rays is less than 0.01 nanometers. The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength.
The electromagnetic waves have the shortest wavelength and the highest frequency is Gamma rays (violet).
What are gamma rays?Gamma radiation, from gamma rays (γ), is a type of electromagnetic radiation usually produced by radioactive elements. Gamma rays, due to their high energy, are able to penetrate matter more deeply than alpha or beta radiation.
Gamma ray is a type of high frequency electromagnetic radiation usually produced by radioactive elements.
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an object of mass 20kg is lifted to a 25m building. how much potential energy is stored on a mass?(take g=10m/s²)
Answers
Answer:
5000J
Explanation:
hope this helps you
How do you do thisss
Answers
Answer:
Its 13n
Explanation:
for 1n its 0.2 times that by 13 and you get 2.6
Answer:
the answer is 8n
Explanation:
hope this helps
Jasmine took the following notes in science class:
Which is the best title for these notes?
Answers
Answer:
Definition of a scientific theory.
Answer:
theories on edge
Explanation:
You start from rest and accelerate with a given constant acceleration for a given distance.
If you repeat the process with twice the acceleration, then the time required to travel the
same distance
(a) remains the same
(b) is doubled
(c) is halved
(d) increases by a factor of √
2
(e) decreases by a factor of √
2
Answers
The correct answer is option C.
When the acceleration is doubled, the time required to cover a distance is halved.
Acceleration is the rate of change of velocity. This means the total velocity changed in the given time.
Acceleration can be written as "a" = dv/dt.
Through this we got to know that the acceleration is inversely proportional to the time.
a ∝ 1/t
So, as the acceleration increases the time decreases.
Here, if the acceleration is doubled
a = 2a
Then time t =
2a = 1/t
a = 1/2t
Therefore, if the acceleration is doubled for a given distance, then the time will be reduced to half for the same distance.
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A 208 V, 10 hp, six pole, 60 Hz, Y-connected induction motor has a full-load slip of 5 percent 1.What is the synchronous speed of this motor
Answers
The synchronous speed of a Y-connected induction motor with a voltage of 208 V, power rating of 10 hp, six poles, 60 Hz, and a full-load slip of 5 percent is 1200 revolutions per minute.
The synchronous speed (Ns) of an induction motor can be calculated using the formula:
Ns = (120 * f) / P
Where:
Ns is the synchronous speed in revolutions per minute (rpm)
f is the frequency of the power supply in hertz (Hz)
P is the number of poles in the motor
In this case, the frequency is given as 60 Hz and the motor has six poles. Substituting these values into the formula, we have:
Ns = (120 * 60) / 6 = 1200 rpm
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What is a scientific law?
Answers
Answer:
In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research.
Explanation:
hope you get it right
:)
Answer: Found this in google. Statement based on repeated experiments or observations, that describe or predict a range of natural phenomena. Hope this helps!
Explanation:
Any planet that you have NOT crossed out above should have a Magnetic Field. Circle any planet above that yoa have NOT crossed out. Do the data in Table 7.3 support your choice(s)? lio 1 No (circle one) TUTORIAL REVIEW QUESTIONS 1. What is (are) the main factor(s) that affect(s) the amount and duration of geological activity on a terrestrial planet? 2. What is (are) the main factor(s) that affect(s) atmospheric conditions on a terrestrial planet? 3. The moons of the giant Jovian planets are small rocky-metal bodies that are, at the largest, about the size of Mercury (but most are smaller). Based on this and what you have learned about the factors that affect geologic activity and atmospheres on similar objects (Terrestrial planets), what geologic and atmospheric conditions would you expect to find on the surface of a typical Jovian moon?
Answers
The main factor that affects the amount and duration of geological activity on a terrestrial planet is its internal heat. This heat is generated through various processes such as radioactive decay and residual heat from planetary formation.
The presence of a molten core and active mantle circulation contributes to geological activity, including tectonic plate movements, volcanic eruptions, and mountain building. Other factors like the planet's size, composition, and distance from the Sun can also influence geological activity to some extent.
The main factors that affect atmospheric conditions on a terrestrial planet are its distance from the Sun, the composition of its atmosphere, and the presence of greenhouse gases. The proximity to the Sun determines the amount of solar energy received, which affects temperature and weather patterns. The composition of the atmosphere, including the presence of gases like oxygen, nitrogen, carbon dioxide, and water vapor, determines the planet's climate and the ability to support life. Greenhouse gases trap heat in the atmosphere, contributing to the greenhouse effect and influencing temperature regulation.
Based on what we know about the factors that affect geologic activity and atmospheres on terrestrial planets, we can expect that typical Jovian moons, being small rocky-metal bodies, would have limited geological activity and thin atmospheres, if any. The smaller size of these moons compared to terrestrial planets means that they have a lower heat-producing capability and less internal energy. Additionally, their lower gravitational forces make it challenging to retain substantial atmospheres. While some Jovian moons may have evidence of geological activity, such as cryovolcanism or tidal heating, they generally exhibit less dynamic geologic and atmospheric conditions compared to larger terrestrial planets.
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By referring to Standard Method of Measurement 2 (SMM2), explain the following clauses:
i. D.10
ii. D.12.4
iii. D.12.6
iv. D.12.8
Answers
SMM2 refers to the Standard Method of Measurement 2. It is a document that specifies the method and processes used in measuring buildings and civil engineering works. SMM2 is commonly used in the construction industry.
The following are explanations of the clauses under Standard Method of Measurement 2 (SMM2):
i. D.10: This clause under SMM2 relates to the painting of metal and timber surfaces. It stipulates that when painting the surfaces of timber or metal, the preparation of surfaces and application of paint must conform to manufacturer specifications. It also specifies that the paint must be applied using a brush, roller, or spray. The clause then goes on to outline specific measurements for the thickness of paint coating to be applied on surfaces.
ii. D.12.4: This clause under SMM2 refers to the construction of walls using concrete blocks. It states that the concrete blocks used should have a minimum density of 1500 kg/m3. It also outlines specific measurements for the thickness of the mortar to be used for bonding the blocks together. The clause further specifies the measurement of the joint thickness between blocks.
iii. D.12.6: This clause under SMM2 refers to the rendering of walls with a cement mortar mix. It specifies that before rendering, the surface of the wall must be clean, dry, and free of debris. It also outlines specific measurements for the thickness of the rendering to be applied to the wall. The clause then stipulates that the rendering should be finished with a smooth surface that conforms to the architect's specifications.
iv. D.12.8: This clause under SMM2 refers to the painting of interior plastered walls. It stipulates that the preparation of surfaces and application of paint must conform to manufacturer specifications. It also specifies that the paint must be applied using a brush, roller, or spray. The clause then goes on to outline specific measurements for the thickness of paint coating to be applied on surfaces.
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Ice has a density of 0.920 g/cm3. An ice cubes mass is 100 g. What is its volume?
Answers
Answer:
\(\boxed {\tt 108.695652 \ cm^3}\)
Explanation:
Volume can be found by dividing the mass by the density.
\(v=\frac{m}{d}\)
The mass is 100 grams and density is 0.920 grams per cubic centimeters.
Therefore,
\(m=100 \ g \\d= 0.920 \ g/cm^3\)
Substitute the values into the formula.
\(v=\frac{100 \ g}{0.920 \ g/cm^3}\)
Divide. Note that the grams, or "g" will cancel each other out.
\(v- 108.695652 \ cm^3\)
The volume of the ice cube is 108.697652 cubic centimeters.
At a frequency the reactance of a certain capacitor equals that of a certain inductor. (a) If the frequency is changed to what is the ratio of the reactance of the inductor to that of the capacitor
Answers
The ratio of the reactance of the inductor to that of the capacitor at a frequency of 150 is (150L)*(150C).
To find the ratio of the reactance of the inductor to that of the capacitor, we need to consider the formula for the reactance of a capacitor and an inductor.
The reactance of a capacitor (Xc) is given by the formula Xc = 1/(2πfC), where f is the frequency and C is the capacitance.
The reactance of an inductor (Xl) is given by the formula Xl = 2πfL, where f is the frequency and L is the inductance.
Given that the reactance of the capacitor equals that of the inductor at a certain frequency, we can set the two formulas equal to each other:
1/(2πfC) = 2πfL
Now, let's solve for the ratio of Xl to Xc by dividing the reactance of the inductor (Xl) by the reactance of the capacitor (Xc):
(Xl/Xc) = (2πfL)/(1/(2πfC))
Simplifying, we can cancel out the f terms:
(Xl/Xc) = (2πfL)*(2πfC)
Further simplifying, we can cancel out the 2π terms:
(Xl/Xc) = (fL)*(fC)
Finally, substituting the given frequency of 150:
(Xl/Xc) = (150L)*(150C)
So, the ratio of the reactance of the inductor to that of the capacitor at a frequency of 150 is (150L)*(150C).
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A humpback whale dove beneath the ocean's surface, and 310 seconds later it sang to
another whale that was 1,800 meters away. The song's sound wave traveled at a constant
velocity of 1,500 meters per second toward the other whale. How much time did it take the
sound wave to travel from one whale to the other?
Answers
The sound wave took 1.2 seconds to travel from one whale to the other.
Velocity is a physical quantity that describes the rate of change of an object's position with respect to time and includes both the speed and direction of motion. It is a vector quantity, meaning it has both magnitude and direction and is typically measured in meters per second (m/s) or other appropriate units.
The time it took for the sound wave to travel from one whale to the other can be calculated using the formula:
time = distance/velocity
In this case, the distance between the whales is 1,800 meters and the velocity of sound in water is 1,500 meters per second. Therefore:
time = 1,800 meters / 1,500 meters per second
time = 1.2 seconds
Hence, The distance between the two whales was covered by the sound wave in 1.2 seconds.
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Two resistors, one with resistance R and the second with resistance 4R are placed in a circuit with a voltage V. If resistance R dissipated power P, what would be the power dissipated by the 4R resistance?
A) 4P
B) 2P
C) 1/2P
D) 1/4P
Answers
The power dissipated by a resistor is given by the formula P = V^2/R, where V is the voltage across the resistor and R is its resistance.
For the resistor with resistance R, the power dissipated is given as P.
For the resistor with resistance 4R, the voltage across it will be the same as the voltage across the R resistor (since they are connected in the same circuit), but the resistance is four times greater.
Using the formula for power, we get:
P = V^2/R
P' = V^2/(4R)
To compare the powers dissipated by the two resistors, we can simplify the expressions by eliminating the voltage V:
P/P' = (V^2/R) / (V^2/(4R))
P/P' = 4
Therefore, the power dissipated by the 4R resistor is four times the power dissipated by the R resistor.
Answer: A) 4P
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All interactions between the atmosphere and the geosphere involve
gases or particles in air and water
water and living things.
soil and gases or particles in the air
soil and living things
Answers
Answer:
The geosphere consists of the solid Earth and the atmosphere consists of the gaseous components in the air. Thus, the answer is C.
Explanation:
Answer:
C
Explanation:
What is an abyssal fan
Answers
Answer:
Abyssal fans, also known as deep-sea fans, underwater deltas, and submarine fans, are underwater geological structures associated with large-scale sediment deposition and formed by turbidity currents
Explanation:
They are underwater deltas and submarine fans, they are associated with large scale sediment, and formed by turbidity currents.
30.) We observe motion by using a *blank* of *blank*.
Answers
Answer:
Point of Reference
Explanation:
Share your experiences with using VPNs. What protocols did you
use? Can you think of any reasons why you would not update the
protocols?
Answers
VPNs commonly use protocols such as OpenVPN, IPsec, L2TP/IPsec, and SSTP. Each protocol has its strengths and weaknesses. For example, OpenVPN is known for its strong security and flexibility, while IPsec offers a high level of encryption and is often used for site-to-site VPNs.
Reasons why someone might choose not to update VPN protocols include compatibility issues with older devices or software, potential disruptions in service during the update process, or concerns about introducing new vulnerabilities or bugs with the updated protocol.
However, it's generally recommended to keep VPN protocols up to date to ensure the highest level of security and compatibility with evolving network environments.
Information about VPN protocols and reasons for updating or not updating them:
1. OpenVPN: It is an open-source protocol that is highly configurable and supports various encryption algorithms. It is known for its strong security and is widely supported across different platforms. Updating OpenVPN ensures that you have the latest security enhancements and bug fixes.
2. IPsec (Internet Protocol Security): IPsec provides a suite of protocols for securing IP communications. It offers strong encryption and authentication mechanisms. While IPsec is commonly used for site-to-site VPNs, it may require additional configuration for remote access VPNs. Updating IPsec ensures that any vulnerabilities or weaknesses discovered in previous versions are addressed.
3. L2TP/IPsec (Layer 2 Tunneling Protocol with IPsec): This protocol combines the tunneling capabilities of L2TP with the security of IPsec. It is supported by various operating systems and devices. However, L2TP/IPsec has been subject to some vulnerabilities and security concerns, so keeping it up to date helps mitigate these risks.
4. SSTP (Secure Socket Tunneling Protocol): Developed by Microsoft, SSTP uses the SSL/TLS protocol to establish a secure connection. It is primarily used on Windows platforms. While SSTP is considered secure, it may not be as widely supported as other protocols. Updating SSTP ensures compatibility and addresses any known vulnerabilities.
Reasons for not updating VPN protocols may include:
a. Compatibility concerns: Some older devices or software may not support the latest VPN protocol updates. In such cases, updating could lead to connectivity issues.
b. Disruptions during the update process: Updating VPN protocols might require restarting services or temporarily interrupting VPN connections, which can cause inconvenience or downtime for users.
c. Stability concerns: New protocol updates may introduce unknown bugs or compatibility issues, potentially impacting the stability and reliability of the VPN service. In such cases, organizations may prefer to delay updates until the new version is thoroughly tested and deemed stable.
It's important to balance the need for security, compatibility, and stability when deciding to update VPN protocols. In general, staying up to date with the latest protocol versions helps maintain the highest level of security and ensures compatibility with evolving network environments.
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What other conserved quantities (besides energy, linear momentum, and angular momentum) can you name?
Answers
Answer:
rotational kinetic energy
angular momentum
the mechanical energy of frictionless systems
Explanation:
The quantities that are conserved in a movement are extremely useful for the simple resolution of different situations, in addition to the linear movement in the angular movement, some quantities are also conserved.
rotational kinetic energy
angular momentum
the mechanical energy of frictionless systems
A 5 kg object is moving downward at a velocity of 12 m/s and is
currently 2.6 meters above the ground.
calculate its kinetic energy
calculate its potential energy
calculate its mechanical energy
Answers
Answer:
the first one i think
Explanation:
If a person could travel at the speed of light, it would still take 4.3 years to reach the nearest
star, Proxima Centauri. How far away, in meters, is Proxima Centauri?
Answers
Answer:
4 × 10^16 m
Explanation:
\(c=\frac{d}{t}\)
d = c × t
\(d = 3 * 10^{8} *4.3 * 365.25 * 24 * 60 60 = 4 * 10^{16} meters\)
Answer:
proxima centauri Is 40208000000000km or ( about 268.770AU.) away from our planet
if the dry mass of the solid part of a soil is 265 g, and the volume of the solid part of the soil is 100 cm3, what is the particle density (dp)?
Answers
The particle density (dp) of a soil can be calculated by dividing the dry mass of the solid part of the soil by its volume.
In this case, the dry mass of the solid part of the soil is 265 g, and the volume of the solid part of the soil is 100 cm3. Therefore, the particle density can be calculated as follows:
dp = dry mass / volume
dp = 265 g / 100 cm3
dp = 2.65 g/cm3
Therefore, the particle density (dp) of the soil is 2.65 g/cm3. This means that the average mass of the particles in the soil is 2.65 grams per cubic centimeter of volume. Particle density is an important physical property of soil that can help in understanding its behavior and properties.
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The volume V of a cube with sides of length x in. is changing with respect to time. At a certain instant of time, the sides of the cube are 7 in. long and increasing at the rate of 0.3 in./s. How fast is the volume of the cube changing (in cu in/s) at that instant of time
Answers
Answer:
my big long peen for ur mom
Explanation:
Which statement describe newtons first law?
Answers
Newton's first law, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
It implies that any object, either stationary or in motion, would remain as it is, unless an external force acts on it. When an external force is applied, it results in a change in motion in terms of direction, speed, or both. This is a statement that describes Newton's first law of motion.Basically, Newton's First Law of Motion states that a body at rest remains at rest and a body in motion maintains uniform motion in a straight line, unless acted upon by an external force.
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heyy i don't understand this question may u help me pls?
Answers
Answer:
What question?
Explanation:
ASAP
In an experiment, students were given an unknown mineral. The unknown mineral was placed in 150 ml of water. Once in the water, the volume went up to 165 ml. Then when the same object was dried, then massed on a balance. It had a mass of 225 grams. What is the density of the unknown mineral? Note: You only have to fill in the numerical answer.
Answers
Answer:
15
Explanation:
225/(165-150)=15g/cm3
Which of the following is the keyboard shortcut for saving a document?
O Control V
O Control S
O Control A
O Control E
Answers
good luck :)))
Answer:Control S, Command S on MAC=Save
An electric current always produces a magnetic field that is ______ to the field. A. perpendicular B. parallel C. at a 37° angle D. none of the above
Answers
Answer:perpendicular
Explanation:
The electric current always generated the magnetic field that should be perpendicular to the field.
Relationship of electric current and magnetic field:In the case when the work should be compassed when the pointing is to be done along with the magnetic field lines so this represent that there should be the magnetic field that should be near the wire via the current should be flowing. here the magnetic field generated by the electric current should always be perpendicular to the current flow direction.
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