I''l give brainliest. Please help. I hold 2 objects about 0.1 meters apart. What is the electrostatic force between the two objects if each has a charge of 4.6 x 10^-16 C?

Answer:

Since velocity is a vector quantity there is no net displacement and the average velocity is zero

(A) is correct

Wait what do you mean what is D? I have no idea what your talking about. Well um... D is the fourth letter or the alphabet.

I have anxiety btw so i don't want to be warned it makes me feel weird or scared.

According to the inverse square law, if the distance between Earth and the Sun were tripled, the solar constant would be reduced to one-ninth (1/9) of its present value.

The solar constant represents the amount of solar radiation received per unit area at the outer atmosphere of Earth. It is dependent on the distance between the Sun and Earth, following the inverse square law. According to this law, the intensity of radiation decreases as the square of the distance increases.

If the distance between Earth and the Sun were tripled, it means the distance would be increased by a factor of 3^2 = 9. Therefore, the solar radiation received per unit area at Earth's outer atmosphere would be reduced to 1/9 of its present value.

This is because the same amount of radiation is spread over a larger area, resulting in a lower intensity or solar constant.

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The mass of the object if the acceleration of a mass is 15 m/s^2 to the left is 1.27 kg

F = F1 + F2 + F3

F1 = - 8 N

F2 = 7 N

F3 = - 18 N

F = - 8 + 7 - 18

F = - 19 N

Negative symbol indicates that the force is acting towards the left.

F = m a

F = Force

m = Mass

a = Acceleration

a = - 15 m / s²

m = F / a

m = - 19 / - 15

m = 1.27 kg

Therefore, the mass of the object is 1.27 kg

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With the SR protocol, it is possible for the sender to receive an ack for a packet that falls outside of its current window.

In response to the specific question, the answer is False.

With the SR Protocol , it is not possible for the sender to receive an ACK (Acknowledgment) for a packet that falls outside of its current window.

The Selective Repeat protocol is a flow control method that is used in computer networks. It allows the sender to transmit a number of packets to the receiver before receiving an acknowledgment.

The sender maintains a window of packets that it has sent but has not yet received an acknowledgment for. The receiver, on the other hand, maintains a window of packets that it expects to receive.

As packets are received by the receiver, an acknowledgment is sent back to the sender to confirm that the packet was received successfully. If the sender does not receive an acknowledgment for a particular packet within a certain period of time, it will retransmit that packet.

However, it is not possible for the sender to receive an ACK for a packet that falls outside of its current window.

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Answer:

D. Refracted

Explanation:

At the point when light passes from a less thick to a more thick substance, (for instance passing from air into water), the light is refracted (or bowed) towards the ordinary. The bowing happens on the grounds that light voyages all the more gradually in a denser medium. The answer is D, refracted.

The object depicted by the graph initially moves at a speed of 25 m/s.

The rate at which the position of an item changes with respect to time is represented by the vector quantity known as velocity. It is calculated by dividing an object's displacement by the time period during which the displacement took place.

Velocity is a phrase used to more simply define the direction and speed of an object's motion. Both the direction and the speed of an object's motion are specified. The International System of Units (SI) uses metres per second (m/s) as the standard unit for measuring velocity.

We must look at the behaviour of the graph before to time 1 second in order to ascertain the initial velocity of the object the graph represents.

From the graph provided,

From the given graph, We can see that from time 0 to time 1 second, the velocity is 25 m/s and stays that way.

As a result, the object's starting velocity is 25 m/s.

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The torque and still get the same change in angular momentum, according to the principle of conservation of angular momentum.  the torque and get the same change in angular momentum Δθ = J / I.

True. The principle of conservation of angular momentum states that the total angular momentum of a system remains constant if no external torque acts on it. This means that if a torque is applied to a system, the system will experience a change in its angular momentum.

The magnitude of the change in angular momentum depends on both the magnitude of the torque and the duration of the torque application. If a larger torque is applied for a shorter time, the change in angular momentum will be the same as if a smaller torque were applied for a longer time.

To see why this is true, we can use the formula for torque:

τ = Iα

where τ is the torque, I is the moment of inertia of the object being rotated, and α is the angular acceleration. Rearranging this equation, we can solve for the angular acceleration:

α = τ / I

Now, if we integrate both sides of the equation with respect to time, we get:

Δθ = ∫(α dt) = ∫(τ / I) dt

where Δθ is the change in angular displacement. If we assume that the moment of inertia of the object remains constant during the torque application, we can take it out of the integral:

Δθ = (1 / I) ∫τ dt

The integral on the right-hand side represents the impulse of the torque, which is equal to the product of the torque and the duration of the torque application:

J = ∫τ dt

Therefore, we can rewrite the equation as:

Δθ = J / I

This equation shows that the change in angular displacement is proportional to the impulse of the torque and inversely proportional to the moment of inertia of the object.

From this equation, we can see that if we increase the duration of the torque application, we can decrease the magnitude of the torque and still get the same change in angular displacement. This is because the product of the torque and the duration of the torque application remains the same, and therefore the impulse of the torque remains constant.

In summary, the magnitude of the change in angular momentum depends on both the magnitude of the torque and the duration of the torque application. If you increase the time over which a torque is applied, you can decrease the magnitude of the torque and still get the same change in angular momentum, according to the principle of conservation of angular momentum.

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If the puppies in the experimental group gain, on average, 3 pounds more than those in the control group over a 4-month period and seem healthier and more energetic.

The given statement suggests that the researchers conducted an experiment on two groups of puppies, with one being a control group and the other an experimental group. The researchers were testing the impact of an independent variable on the puppies over a 4-month period. Based on the results of the experiment, the puppies in the experimental group gained an average of 3 pounds more than those in the control group. Additionally, these puppies also appeared healthier and more energetic than their counterparts in the control group. This implies that the independent variable of the study resulted in positive effects on the dependent variable in the experimental group. The researchers would, therefore, consider their hypothesis to be supported.

The experimental group appeared to benefit from the independent variable, which resulted in the observed differences between the two groups.

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Answer:

"The process in which iron (Fe) is reacting to water (H2O) and oxygen (O) to form iron oxide (Fe2O3) is a perfect demonstration of a chemical change."

________________________________________________________

"A chemical change occurs when one chemical substance is transformed into one or more different substances, for instance how iron becomes rust after a chemical change. In this situation, there is a chemical change occurring, transforming a chemical substance (iron) into iron oxide due to the reaction when combined with that of water and oxygen. Hence, the best demonstration of chemical change out of the listed situations above would be Option D."

Hope this helps! If so, please lmk! Thanks and good luck!

Chemical transitions, commonly referred to as chemical reactions, are processes that change one or more chemicals into one or more brand-new, distinct substances. The correct option is D.

A chemical change is the transformation of one substance into another, the emergence of new compounds with distinct properties, or any combination of these. It happens when two compounds unite to create a new substance (synthesis) or when two substances break down to create new substances.

Iron, oxygen, and water react to form rust as a result. Iron oxide is also referred to as rust. The chemical reaction is shown graphically as 4Fe (s), 3O₂ (g) → 2Fe₂O₃ + H₂O (l).

Thus the correct option is D.

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Answer:

η = 1.31

Explanation:

The formula for the refractive index of from air to some other medium is given by the following formula:

\(\eta = \frac{c}{v}\\\)

where,

η = refractive index = ?

c = speed of light in air = 3 x 10⁸ m/s

v = speed of light in ice = 2.29 x 10⁸ m/s

Therefore, using these values in the equation we get:

\(\eta = \frac{3\ x\ 10^8\ m/s}{2.29\ x\ 10^8\ m/s} \\\)

η = 1.31

Cystic fibrosis is a recessive genetic disorder caused by a mutation in the CFTR gene. It affects the lungs, pancreas, and other organs, causing difficulties in breathing and digestive problems.

Hemophilia is an X-linked recessive genetic disorder that affects blood clotting due to mutations in clotting factor genes. Hemophilia A is caused by a mutation in the F8 gene while hemophilia B is caused by a mutation in the F9 gene.

Duchenne muscular dystrophy is an X-linked recessive genetic disorder caused by mutations in the DMD gene, which codes for a protein called dystrophin. It affects muscle function and leads to muscle weakness and wasting.

Huntington's disease is an autosomal dominant genetic disorder caused by a mutation in the HTT gene. It affects brain function, leading to psychiatric symptoms and movement problems.

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Cystic fibrosis -  autosomal recessive pattern, Hemophilia -  X-linked recessive pattern, Duchenne muscular dystrophy -  X-linked recessive pattern and Huntington's disease - autosomal dominant pattern.

Gene alterations that are essentially present in every cell in the body cause many hereditary diseases. These illnesses thus frequently impact many bodily systems, and the majority cannot be treated. To treat or manage some of the accompanying symptoms, there might be methods available.

Genetic disorders connected to mutations in genes on the X chromosome are referred to as having X-linked recessive inheritance. Because he contains just one X chromosome, a male who carries this mutation will be affected. A female who carries a gene mutation in one X chromosome but has a normal gene on the other X chromosome usually has no symptoms.

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Answer:

wave w is a sound wave

wave x and y are light waves

Answer:

D

Explanation:

A house is designed to have passive solar energy features, Brickwork is to be incorporated into the interior of the house to act as a heat absorber. Each brick weighs approximately 1.8 kg. The specific heat of the brick is 0.85 j/g-K. How many bricks must be incorporated into the interior of the hose to provide the same total heat capacity as 1.0 103 gal of water.

The heat capacity of the water can be calculated using the specific heat capacity formula as follows:Q = m * C * ΔTWhere Q is the amount of heat energy, m is the mass of water, C is the specific heat of water, and ΔT is the change in temperature.To find the mass of water, we need to convert the volume from gallons to kilograms.1 gal of water = 3.78541 kg of waterTherefore, 1.0 x 103 gal of water = 3.78541 x 1.0 x 103 = 3.78541 x 103 kg of waterNow, let us calculate the heat capacity of water.Qwater = m * C * ΔTQwater = 3.78541 x 103 * 4.18 * (20 - 10)Qwater = 1.58 x 105 J/KNow, let us calculate the heat capacity of one brick.Qbrick = m * C * ΔTWe are looking for the number of bricks required to have the same heat capacity as 1.0 x 103 gal of water.

Thus, we can equate the two heat capacities as follows:Qbrick = QwaterTherefore,mbrick * Cbrick * ΔT = mwater * Cwater * ΔTmbrick * Cbrick = mwater * Cwatermbrick = (mwater * Cwater) / CbrickSubstituting the values,mbrick = (3.78541 x 103 x 4.18) / (0.85 x 1000)Note that we have converted the specific heat of the brick from J/g-K to J/kg-K. This is because the mass of the brick is given in kilograms.Thus,mbrick = 19.03Therefore, 19 bricks must be incorporated into the interior of the house to provide the same total heat capacity as 1.0 x 103 gal of water.Explanation:The mass of water is calculated as:1 gal of water = 3.78541 kg of waterTherefore, 1.0 x 103 gal of water = 3.78541 x 1.0 x 103 = 3.78541 x 103 kg of waterHeat capacity of water is calculated as:Qwater = m * C * ΔTQwater = 3.78541 x 103 * 4.18 * (20 - 10)Qwater = 1.58 x 105 J/KThe heat capacity of one brick is calculated as:Qbrick = m * C * ΔTWe equate the two heat capacities to find the mass of the bricks.mbrick * Cbrick * ΔT = mwater * Cwater * ΔTmbrick * Cbrick = mwater * Cwatermbrick = (mwater * Cwater) / CbrickThe specific heat of the brick is given as 0.85 j/g-K, so we need to convert this to J/kg-K because the mass of the brick is given in kg. Thus,mbrick = (3.78541 x 103 x 4.18) / (0.85 x 1000)Note that mbrick is rounded to two decimal places.Therefore, 19 bricks must be incorporated into the interior of the house to provide the same total heat capacity as 1.0 x 103 gal of water.

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Answer:

P = mv

Explanation:

P = Momentum

m = mass

v = velocity

Therefore, P = 10 x 13 = 130 kg • m/s

The value of theta for the maximum height is 30°.

Calculation:-

Since the angle from the horizontal is Cosθ, therefore the angle from the vertical is sinθ.

Hmax = U² sin²θ/2g

11.25 = 30² sin²θ/2g

sin²θ = (11.25 × 2 × 10)/900

   ⇒    sin²θ   =   0.25

    ⇒   sin θ = 0.5

    ⇒   sin θ = 1/2 = 30°

The horizontal pace of a projectile is regular (in no way converting in value), and there's a vertical acceleration because of gravity; its cost is 9.8 m/s/s, down, The vertical speed of a projectile changes via nine.8 m/s every second, The horizontal motion of a projectile is impartial of its vertical movement.

Projectile motion is a form of motion experienced with the aid of an object or particle that is projected in a gravitational field, such as from Earth's floor, and movements alongside a curved route below the action of gravity best.

Projectile motion is the movement of an object thrown (projected) into the air. After the initial force that launches the item, it most effectively reports the pressure of gravity. The object is known as a projectile, and its route is called its trajectory.

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σ = (2ε₀ * mg) / (q * sin(θ)) this is the surface charge density for the large charged nonconducting sheet.

To calculate the surface charge density for the sheet, we can use the concept of electrostatic equilibrium. The force on the charged sphere due to the electric field created by the sheet must be balanced by the weight of the sphere.

The force on the charged sphere is given by F = qE, where E is the electric field strength at the location of the sphere. The electric field at a distance r from a charged sheet with surface charge density σ is given by E = σ/2ε₀, where ε₀ is the permittivity of free space.

Therefore, the force on the sphere can be written as F = qσ/2ε₀. This force must be balanced by the weight of the sphere, which is given by W = mg, where g is the acceleration due to gravity.

We can use trigonometry to relate the weight of the sphere to the angle θ between the thread and the sheet. The component of the weight perpendicular to the sheet is given by mgcos(θ).

Setting F = W, we can solve for the surface charge density σ:

qσ/2ε₀ = mgcos(θ)

σ = 2ε₀mgcos(θ)/q

Therefore, the surface charge density for the sheet is given by σ = 2ε₀mgcos(θ)/q.
Hi! To calculate the surface charge density for the large charged nonconducting sheet, we can consider the forces acting on the small sphere, which are the gravitational force (F_g) and the electrostatic force (F_e). The equilibrium condition of the sphere is given by the angle θ.

The gravitational force is given by F_g = mg, where m is the mass of the sphere and g is the gravitational acceleration.

The electrostatic force is given by F_e = qE, where q is the charge of the sphere and E is the electric field due to the charged sheet.

In equilibrium, the forces are balanced in the vertical and horizontal directions. Therefore, we have:

1. F_g = mg = qE * sin(θ) (vertical component)
2. F_e * cos(θ) = qE * cos(θ) (horizontal component)

From (1), we can get the electric field E as:

E = mg / (q * sin(θ))

The electric field of an infinitely large charged nonconducting sheet is given by:

E = (σ / 2ε₀), where σ is the surface charge density and ε₀ is the vacuum permittivity.

Now, we can equate the expressions for E:

σ / (2ε₀) = mg / (q * sin(θ))

Solving for σ, we get:

σ = (2ε₀ * mg) / (q * sin(θ))

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Answer:Joe's velocity leaving the ground is 1.00 m/s.

Explanation: The velocity of Joe immediately after leaving the ground can be calculated using the formula v = at, where a is the acceleration and t is the time. Joe's acceleration can be found using the equation F = ma, where F is the net force and m is the mass.So, Joe's acceleration can be calculated as a = F/m = 100N / 90kg = 1.11 m/s^2.Then, using v = at, we can calculate Joe's velocity as v = 1.11 m/s^2 x 0.9 s = 1.00 m/s. Therefore, Joe's velocity immediately after leaving the ground is 1.00 m/s.

An ionic compound that would bond in a 1:2 ratio would be one in which the cation has a charge of 2+ and the anion has a charge of 1-. This is because the total charge of the compound must be neutral.

An ionic compound is a type of chemical compound that is formed through the transfer of electrons between atoms. In an ionic compound, one or more positively charged ions (known as cations) are attracted to one or more negatively charged ions (known as anions) to form a stable structure. The cations and anions are held together by electrostatic forces known as ionic bonds.

Ionic compounds typically have high melting and boiling points, are usually crystalline solids at room temperature, and are often soluble in water. They can conduct electricity when dissolved in water or when melted, but not when in a solid state. Ionic compounds have a wide range of applications, including as building blocks for ceramics, in the production of batteries, and as components of various chemical processes. Examples of common ionic compounds include sodium chloride (table salt), calcium carbonate (chalk), and potassium iodide (used in medicine).

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The action spectrum is broader than the absorption spectrum because it takes into account all wavelengths of light that can drive a particular biological process, not just those absorbed by a specific pigment.

The action spectrum shows the efficiency of a biological process, such as photosynthesis or vision, at different wavelengths of light. It measures the biological response to each wavelength, regardless of which pigment is responsible for absorbing the light.

On the other hand, the absorption spectrum only shows the wavelengths absorbed by a particular pigment, such as chlorophyll or rhodopsin. Therefore, the action spectrum is broader than the absorption spectrum because it considers all the wavelengths that can activate the biological process, while the absorption spectrum only shows the wavelengths absorbed by a specific pigment.

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A wide variety of producers, consumers, & decomposers can coexist in the ecosystem.

The variety of all living creatures on our world, known as biodiversity, has been disappearing at an alarming rate in recent years. This is largely due to human activities such changing land use, pollution, and climate change.

All living creatures and their interactions are represented by the term "biodiversity," which is short for biological diversity. Because of extinctions and the emergence of new species, biodiversity is always changing. Three types of diversity—species, genetic, and ecosystem—are frequently mentioned by scientists.

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A circuit that includes lights and batteries has two energy sources: the battery and the light bulb. The batteries provide the energy necessary to operate the light bulbs and make the circuit work. When you connect a light bulb to a battery, an electrical current flows through the circuit, allowing the bulb to light up.

In general, a circuit with lights and batteries works as follows:

When the circuit is closed, the battery's positive and negative terminals are connected by the wires. The current travels through the wires to the light bulb. When the current reaches the light bulb, it encounters the filament, causing it to heat up. The heat makes the filament glow, emitting light as a result. The circuit continues to function as long as the battery has enough energy to keep the filament glowing.

In conclusion, the presence of a battery and a light bulb in a circuit allows it to produce light. The battery provides the energy necessary to keep the filament glowing, resulting in the bulb's illumination.

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The immediate source of the colored light produced by neon is the excited atoms of neon. When a neon gas tube is used to produce colored lights, electrical discharge is passed through the neon gas. When an electrical current is passed through the gas, it causes the electrons to gain energy and enter into an excited state.

The electrons then move from their ground state to higher energy levels in the atom, and they remain in this state for a brief period of time before returning to their ground state.

As the excited electrons fall back to their ground state, they release the energy that they had previously absorbed as light. Since each atom has a different energy level, each atom will release a different wavelength of light when the electrons fall back to their ground state.

Because of this, the colors of the light that are emitted from a neon gas tube are determined by the atomic structure of the neon gas and the energy that is supplied to it in the form of an electrical discharge. This is why neon lights emit a specific color of light when an electrical current is passed through them.

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Answer:

La mayoría de los adultos necesitan entre 7 y 8 horas de sueño de buena calidad en un horario uniforme todas las noches.

Explanation:

TRUE. This description matches that of fibre optic cables, which use a protected string of glass or plastic to transmit beams of light over long distances at high speeds.

The light signals are converted into electrical signals at either end of the cable for communication purposes.

True. A high-speed transmission medium that uses a protected string of glass to transmit beams of light is known as fibre-optic cable. This type of cable can carry data at very high speeds over long distances, providing better performance and reliability than traditional copper cables.

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The earliest astronomical records appear to have been made by the ancient Chinese, Egyptians, and Babylonians in order to determine when to hunt plants and animals

A conceptual investigation of the properties of astronomical records and the links that exist between various types of data yields an astronomical records data model.

The paintings on cave walls that date back 30,000 years are the earliest records of astronomical observations that we have. The night sky piqued their keen curiosity in the ancient Egyptians. They were particularly captivated by two bright stars that were constantly seen orbiting the North Pole.

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The wavelength of the sound at frequency of 1.2khz will be 0.275 m

we know that,

velocity= frequency x wavelength

0.33 km/s = 1.2khz x wavelength

wavelength = 0.33 km/s/1.2khz

wavelength = 330m/s / 1200hz

wavelength = 0.275m

Friction is the opposition offered to the movement of a surface on another and depends on the nature of the surfaces in contact.

The term friction refers to the opposition that is offered by surfaces in contact when they move over each other. The question is incomplete but I will try to help you the much I can.

Now recall that fricton only depends on the nature of the surfaces in contact. The friction is te reason when heat is provides in the moving parts of machines.

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