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I may or may not  see object in the dark room or outside the room because it all depends on the presence of light.

We realize that we can see an item when light reflected from its surface enter our eyes.There is no light in obscurity room .As there will be no light in obscurity room there will be no reflection. So we can not see any item in the room, In the event that there is light external the room, we will actually want to see object outside the room. This is on the grounds that the light reflected from object make picture in our eyes. So on the off chance that there is no light we will not ready to see, assuming there is light we will ready to see.

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To run a wire from a receptacle in one room to a switch and receptacle in another room, you will need to follow these steps:

That electrical work can be dangerous and should only be performed by a qualified electrician. If you are not comfortable or familiar with electrical work, it is recommended that you hire a professional to complete the job for you.

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Frictional force that is produced when two surfaces attempt to move in one direction or in opposite directions is known as frictional force. the primary objective of frictional force.

Lever. A rigid piece of material is put over what is known as a fulcrum to form a lever. On one ends of the lever, which is also known as the resisting force, is an object that must be lifted. To lift the frictional resistance, effort is applied at the opposite end of the level.

Friction is resistance brought on by rubbing surfaces together, such as the stylus' tip and an object. Viscosity is a fluid's resistance to movement, such as water.

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Answer:

Below

Explanation:

The time it take the ruler to fall .083 m is given by

  d = 1/2 a t^2       d = .083 m   a = 9.81 m/s^2

       t = .13 s

The law of conservation of mass states that matter can neither be created nor destroyed. When wood burns, the mass of the wood is converted into a small amount of ashes and gas. The total mass of the ashes and gas is equal to the mass of the wood before it was burned, demonstrating that the law of conservation of mass holds true.

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The correct response is 86.913 amu for Rb-87's mass.

Two isotopes of the rubidium (Rb) element exist: Rb-85, which has an atomic mass of 84.9117 amu, and Rb-87, which has an atomic mass of 86.9092 amu. Rubidium has an average atomic weight of 85.4678.

Both isotopes have a ratio of 2.591 to 1. Consequently, there is one Rb-87 atom for every 2.591 Rb-85 atoms.

Rb-85 abundance is 2.591/3.591 = 0.722% for 100% naturally occurring Rb, while Rb-87 abundance is 1 - 0.722 = 0.278.

84.9117 × 0.722 + X × 0.278 = 85.4678

X = 24.1618 / 0.278 X = 86.913 amu 61.306 + X 0.278 = 85.4678 X 0.278 = 85.4678 - 61.306 X 0.278 =86.913

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The mass of a piece of copper that has volume of 7[tex]cm^{3}[/tex] is 62.58g.

The element copper (Cu) is a reddish, very ductile metal belonging to Periodic Group 11 that has an exceptional ability to conduct heat and electricity. In nature, copper can be found in its free metallic state.

Given,

Volume = 7 cm^3

we know that,

The density of copper is 8.960g/cm^3 in room temperature.

Density = mass / volume

Mass = Density x Volume

Mass = 8.960 x 7

Mass = 62.72 g

Mass of copper has a volume of 7 cm^3 is 62.72g.

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Currently, contemporary sonar technology has only been used to map fewer than 10% of the world's oceans. Only around 35% of the ocean and coastal waterways in the United States have been mapped using contemporary techniques.

Why don't we investigate the ocean's bottom?

It is challenging to attempt to travel to the ocean's depths. Between 4,000 and 6,000 metres below sea level is where the majority of the ocean bottom is located. The abyssal zone is what it is termed. The visibility is really poor because the sunlight doesn't penetrate very far down. Ocean trenches are a few smaller, deeper regions that exist beneath the ocean floor. Seamounts, volcanic islands, mid-oceanic ridges and rises, and seamounts are features that rise up from the ocean floor.

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It's kind of in the definition of what 1 is to say that 1 to the power of anything is 1. You can use complicated powers, but the outcome will always be 1.

The simplest method for determining a number's nth power is to multiply it exactly n times. In this situation, we might simply calculate pow(2,-3) = 1/(23), which is the inverse of its positive power.

Divide both sides by the left-hand integer to create a ratio with the notation 1: n. Divide both sides by the right-hand integer to represent the ratio as n: 1. to check if you're right.

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E = hv is the energy equation. In the formula, E stands for energy, h for Planck's constant (6.626 x 10 -34 J s), and v for frequency. Since frequency rises as energy falls, frequency and energy are related directly in the energy equation. Because h is a constant, this is conceivable.

Each quantum's energy content is directly influenced by the radiation's frequency. Since the relationship between frequency and wavelength is inverse, the amount of energy carried is also inversely proportional to wavelength.

The link between the energy E and frequency v of a photon is expressed by the equation E=hv, where h is Planck's constant.

In essence, energy is directly proportional to radiation frequency but inversely proportional to wavelength. As a result, energy increases when frequency or wavelength decreases and decreases when frequency or wavelength increases.

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In gm two-mode hybrid electric vehicle, the vehicle can be powered by electric power alone in the first mode. The first mode has a function like a regular full hybrid.

A two-mode vehicle is a hybrid model that functions in two ways. The first mode is fully hybrid. The second mode brings a difference. The second mode performs various functions by adjusting various amounts of engine and motor functions.

In the first mode, with a light load and at low speed, the engine can be powered alone on electric power. In this mode, the engine can be shut down, but all accessories can continue operating on electric power. The hybrid system can restart the engine at any time when required.

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Surprise is the facial expressions is recognized by people of all cultures.

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Consequently, if =3, vectors are perpendicular to one another.

Greek letter lambda is part of the alphabet.

Lambda is mostly used as a variable in physics to indicate or denote the wavelength of any wave.

Lambda is the term used to describe the radioactive decay constant in nuclear physics and radioactivity.

Lambda is also used to refer to the linear charge density of a uniform line of electric charge in electric fields.

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The relationship between the mass of a student and the amount of work they do is that the greater the mass, the more work.

This is referred to as any type of activity which requires the use of physical or mental effort by an individual or thing.

In a scenario where an individual has a greater mass then there will be more work done and vice versa as a result of the formula of work being Force × distance where the Force = mass × acceleration which therefore  explains the relationship between the mass of a student and the amount of work they do.

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Rare diseases can also be brought on by genetic problems. Less than 200,000 Americans are afflicted by this group of illnesses. Experts estimate that there could be as many as 7,000 of these illnesses.

One of the oldest arguments in the scientific world is the nature vs. nurture controversy.

Single gene illnesses are brought on by flaws in just one specific gene. Over 10,000 human diseases are brought on by a single gene mutation, often known as a change. Nearly all ailments and diseases have a hereditary component, researchers are discovering. Variations, or mutations as they are commonly known, in a single gene are the root cause of some diseases, including sickle cell disease and cystic fibrosis.

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The highlighted vessel  given below in the image attached:

What is the function of the coronary arteries and cardiac veins?

The movement of blood through the blood arteries that nourish the heart muscle is known as coronary circulation (myocardium). The heart muscle receives oxygenated blood from the coronary arteries. After the blood has been deoxygenated, cardiac veins remove it.

The heart muscle receives blood from coronary arteries. The heart muscle need oxygen-rich blood in order to operate, just like all other bodily components do. Blood that lacks oxygen must also be transported away. Outside of the heart, the coronary arteries encircle the organ.

Therefore, Your heart receives blood through the coronary arteries and their branches. In order to pump blood through your heart and the rest of your body, your heart muscles require the oxygen and nutrients found in blood.

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The electric potential of a point charge is V=kQ/r. A scalar is an electric potential, while a vector is an electric field.

The voltage due to a combination of point charges is obtained by adding voltages as integers, whereas the overall electric field is obtained by adding individual fields as vectors. When electrostatic forces are applied, the electric potential at a place in an electric field is the amount of work done transferring a unit positive charge from infinity to that point along any path. Because the work done on the item is equal to mgh, the energy gained by the object Equals mgh, which in this case is the potential energy E, according to the rule of conservation of energy.

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The Standard International (SI) unit of force is the newton. The letter N is frequently used to shorten the phrase "newton" in physics and engineering documents.

N, the collection of natural numbers, can be defined in one of two ways: N = {0, 1, 2...} N = (1, 2,...} Unknown or undefined natural numbers are represented by lowercase letters in mathematical equations.

N in an equation stands for a particular number, not just any integer. N + 9 = 12, which denotes that N is a number that, when added to 9, must result in the number 12.

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The model will be just like the real solar system when it shows the moon and other satellites revolve around the earth.

Heliocentric model is the most accepted model of the solar system. Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the universe.

The moon and the other satellites revolve around the earth due to the force of gravitation. The moon orbits the Earth once every 27.322 days. It also takes approximately 27 days for the moon to rotate once on its axis. As a result, the moon does not seem to be spinning but appears to observers from Earth to be keeping almost perfectly still. Scientists call this synchronous rotation.

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To observe the impact of the herbicide on the molecular structures inside plant cells, a microscope with high resolution and the ability to visualize small structures would be the best tool for this research. One option that could be suitable for this purpose is a transmission electron microscope (TEM).

A transmission electron microscope uses a beam of electrons to produce an image of the sample being studied. It has a higher resolution than a light microscope, and it is able to visualize structures as small as 0.2 nanometers in size. This makes it an ideal tool for studying the molecular structures inside cells, including proteins, DNA, and other cellular components.

Another option that could be used for this research is a scanning electron microscope (SEM). A scanning electron microscope uses a beam of electrons to produce a detailed, three-dimensional image of the surface of a sample. It has a lower resolution than a TEM, but it is able to visualize larger structures and features on the surface of cells.

Both TEMs and SEMs are powerful tools for studying the structures and functions of cells and molecular processes, and they are commonly used in scientific research and other applications.

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If  the point on the arm hanging the bob and the pointer are not on the same vertical line then the torque applied by the bob will not be zero.

When the point of arm and the pointer are in same vertical line than the angle between the point of arm and pointer will not be zero. We know that  Torque is defined as the cross product of distance of  point where force is applied  and force applied on the body.

In other words, Torque=distance × Force

or Torque=rFsinθ(since cross product involves sinθ) where r is the distance and F is the applied force.

Since angle is not zero, therefore angle(θ) will be greater than zero,so sinθ have some value which is greater than zero,and it is enough to rotate the system from its equilibrium point.Due to torque,system will become unstable.

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(Complete question) is:

If a metal bob is rotated in a uniform circular motion in this experiement, what would be the effect if the point on the arm hanging the bob and the pointer are not on the same vertical line?

(a) The fraction of neutron's kinetic energy transferred to the atomic nucleus is 0.088.

(b) The final kinetic energy of the neutron is  4.95 x 10⁻¹³ J.

The final velocity of the atom is calculated by applying the principle of conservation of linear momentum as follows;

initial momentum of the neutron = final momentum of the atom

m₁u₁  = m₂u₂

where;

The mass of the atomic nucleus = 11.4 m₁

u₂  = m₁u₁ / m₂

u₂  = m₁u₁ / (11.4 m₁)

u₂  = 0.088u₁

The initial kinetic energy of the neutron is calculated as;

K.Ei = ¹/₂m₁u₁²

The final kinetic energy of the atomic nucleus is calculated as;

K.Ef =  ¹/₂m₂u₂²

K.Ef =  ¹/₂(11.4 m₁)(0.088u₁)²

K.Ef = 0.088 (¹/₂m₁u₁²)

K.Ef = 0.088 (K.Ei)

The fraction of neutron's kinetic energy transferred to the atomic nucleus is calculated as;

= 0.088 (K.Ei) / K.Ei

= 0.088

= 8.8 %

The final kinetic energy of the neutron is calculated as follows;

K.E.f (neutron) = (1 - 0.088) x (5.43 x 10⁻¹³ J)

K.E.f (neutron) = 4.95 x 10⁻¹³ J

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Answer:- electricity, heating, transportation and manufacturing.

Explanation:First lets us know what non-renewable energy is.

Non-renewable energy is energy derived from finite resources that are not replaced quickly enough to keep up with the speed of consumption. For perspective, non-renewable energy sources will not be replenished in our lifetime, or, more accurately, many human lifetimes. Most non-renewable energy sources are fossil fuels such as petroleum and crude oil, coal, and natural gas¬, but nuclear fuel, mainly used to produce electricity, heating, transportation and manufacturing, is also generally classified as nonrenewable.

Yes! As long as both receive enough sun or wind to create electricity, you can use both solar panels and wind turbines to charge your battery bank by running through a hybrid charge controller.

Many renewable energy specialists believe that a tiny "hybrid" electric system that combines home wind and home solar (photovoltaic or PV) technology offers significant benefits over either one alone.

Wind and sunlight are inherently unreliable and energy inefficient. As a result, installing a lot of solar and wind energy equipment on the grid raises the price of electricity production, locks in the price of fossil fuels, and has a negative impact on the environment.

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a) The  magnitude of the velocity of the aircraft P relative to aircraft Q is 424 m/s

b) The  direction of the velocity is 45  degrees.

We know that the relative velocity has to do with the velocity of the object that is the same in magnitude and direction as the velocities of two or more objects together.

As such we have the velocities of the objects as;

P = 300 m s¯¹

Q = 300 m s¯¹

Since they are at right angles, the resultant is;

R = √(300)^2 + (300)^2

R = 424 m/s

b) The direction of the velocity is obtained as;

tan-1 = (300/300)

= 45 degrees

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Answer:

Radon and helium both of which form during the decay of heavier elements in bedrock.

The function NSolve("Equation", "Variable = starting value") generates a list of numerical solutions for the given equation for the specified unknown variable and its starting value.

Searches for solutions over the domain of real numbers in an effort to obtain numerical approximations to the solutions of the system of equations or inequalities for the variables vars.

There are some equations that have infinitely many or no solutions. When simplified, equations without solutions won't have the same value. The same constant will be used on both sides to simplify equations having infinite solutions. An inconsistent system is a set of equations that cannot be solved.

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The term "cutoff" in theoretical physics refers to an artificial maximum or minimum value of energy, momentum, or length that is used to exclude objects having values that are more or smaller than these physical quantities from calculations.

A cutoff frequency, also known as a corner frequency or break frequency, is the frequency response threshold at which energy begins to be attenuated (reflected or diminished) rather than pass through a system.

The frequency above or below which the power output of a circuit, such as a line, amplifier, or electronic filter (such as a high pass filter), has decreased to a specific percentage of the power in the passband is known as the cutoff frequency or corner frequency in electronics.

The passband power, commonly known as the 3 dB point since a decline of 3 dB roughly equates to half power, is the proportion that occurs most frequently. The voltage ratio is falling in this case.

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The time taken for the bullet to reach the ground is  0.447 s

What is free fall?

Free fall is a concept of motion where an object is falling under the force of gravity and is only subjected to the force of gravity. It is experienced by objects that are not subject to any other type of force such as air resistance or drag. Examples of objects in free fall include an object dropped from a certain height, a skydiver in a belly-to-earth position, a spacecraft in orbit, or an object thrown upwards and then falling back down. A free fall can be thought of as a state of weightlessness, since the object is not subject to any other force, and is accelerating at a rate of 9.8 m/s2 (or 32 ft/s2). This acceleration is due to gravity and is known as the acceleration due to gravity.

Height from which the bullet id fired, h  = 0.981 m

initial velocity of the bullet, u₁ = 981 m/s

Since it is fired parallel to the ground , the initial velocity u₁ does not have a vertical component

So it will be a free fall

Therefore the time taken to reach ground , t =√(2h/g)

t = √(2 * 0.981 / 9.81)
 = √(1/5)
 = √0.2
t  =  0.447 s
Therefore the time taken for the  bullet to reach the ground is  0.447 s

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Gravity are being pulled down the slide by gravity, but there is also another physics principle at work: friction or resistance. Two factors contribute to friction's force.

Answer and justification Gravitational and frictional forces may have an impact on a child's motion as they descend a slide.

Contact is a force acting such as the normal force that prevents two things from sliding past one another. Friction moves an object's flat surface in a direction opposite to the normal force, which moves an object perpendicular to its flat surface.

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