A 3 kg rock is subject to the force of gravity for 8 s. What is the impulse?

The term, except geologic age, all the other factors affecting the mass wasting and mass wasting happens due to gravity.

A more generic name for the downward movement of rock and soil caused by gravity is mass wasting, commonly referred to as mass movement.

The material conveyed by mass wasting is not entrained in a moving media, such as water, wind, or ice, which distinguishes it from other erosional processes.

Creep, solifluction, falling rocks, mudflows, and landslides are all examples of mass wasting; each has distinctive characteristics and can occur over the own distinctive characteristics and can occur over timescales ranging from a few seconds to centuries.

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Answer:

6 v

Explanation:

The constant c in the equation\(v = vie^{-ct }\) can be calculated using the given information about the speedboat's initial speed and its speed at a certain time during coasting. The value of c is 0.055 s⁻¹.

Given that the speedboat is cruising at a speed of 11.1 m/s in still water and that it coasts to rest due to drag forces, the speed during coasting is given by the equation \(v = vie^{-ct}\).

We are given that the speedboat's speed at a time t = 19.5 s after the engines are cut is 5.00 m/s. Using this information, we can set up an equation:

\(5.00 m/s = 11.1 m/s * e^{(-c * 19.5 s)}\)

Solving for c, we get:

\(c = -ln(5.00 m/s / 11.1 m/s) / 19.5 s = 0.055 s^{-1}\)

Therefore, the constant c in the equation \(v = vie^{-ct} \hspace{0.1cm}is \hspace{0.1cm}0.055  s^{-1}\)

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Answer: The rods both have the same charge therefore they repel each other.  The force of repulsion creates a downward force on the balance pan and therefore the balance registers a higher reading.

The bundle contains all the required resources related to a component like a javascript controller, javascript helper, renderer, CSS styles, etc. A basic lightning component contains the design of a page in Html with some lightning tags. The component uses JavaScript on the client side on the server side.

Natural resources supply us with water, wood, food, and electricity. It is not feasible to live with out natural resources. natural resources consist of oil, coal, herbal gas, metals, stone, and sand. Air, sunlight, soil, and water are different herbal resources.

All useful resources have software, and because of this, they have got the want pleasant power. The price or usefulness of any given detail is recognized in relation to a selected intention. For example, cash can be maximum valuable asset at the same time as shopping for a commodity. it could be a vain useful resource to bypass an examination.

Useful resource wants manner any modern or projected deficit to reliably meet electricity needs created by using modifications in call for, modifications to machine sources, or their operation to conform with country or federal requirements.

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Number of oxygen molecules in each breath is 2.9X10^21

Given that the volume of air inside a breath (V) = 6.0×10^−4 m^3

oxygen in fresh air = 20%

volume of oxygen in fresh air = 20/100 x 6.0×10^−4 = 1.2x10-4m^3

pressure in the lungs (P)=  1.0×10^5 pa

Temperature of air (T) =300K

Using ideal gas equation find the number of moles of oxygen

PV = nRT

Then n = 1.0×10^5 x  1.2x10-4 / 8.314 x 300 = 4.8x10-3mol

We know the number of molecules in 1 mol is 6.023x10^23

Then the number of molecules in 4.8x10-3mol of oxygen is =

4.8x10-3molx 6.023x10^23 = 2.9x10^21

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The universe (Latin: universus) is all of space and time[a] and their contents,[10] including planets, stars, galaxies, and all other forms of matter and energy. While the spatial size of the entire universe is unknown,[3] it is possible to measure the size of the observable universe, which is currently estimated to be 93 billion light-years in diameter. In various multiverse hypotheses, a universe is one of many causally disconnected[11] constituent parts of a larger multiverse, which itself comprises all of space and time and its contents;[12] as a consequence, ‘the universe’ and ‘the multiverse’ are synonymous in such theories.

The earliest cosmological models of the universe were developed by ancient Greek and Indian philosophers and were geocentric, placing Earth at the center.[13][14] Over the centuries, more precise astronomical observations led Nicolaus Copernicus to develop the heliocentric model with the Sun at the center of the Solar System. In developing the law of universal gravitation, Isaac Newton built upon Copernicus' work as well as Johannes Kepler's laws of planetary motion and observations by Tycho Brahe.

Further observational improvements led to the realization that the Sun is one of hundreds of billions of stars in the Milky Way, which is one of at least two trillion galaxies in the universe. Many of the stars in our galaxy have planets. At the largest scale, galaxies are distributed uniformly and the same in all directions, meaning that the universe has neither an edge nor a center. At smaller scales, galaxies are distributed in clusters and superclusters which form immense filaments and voids in space, creating a vast foam-like structure.[15] Discoveries in the early 20th century have suggested that the universe had a beginning and that space has been expanding since then,[16] and is currently still expanding at an increasing rate.[17]

The Big Bang theory is the prevailing cosmological description of the development of the universe. According to estimation of this theory, space and time emerged together 13.799±0.021 billion years ago[2] and the energy and matter initially present have become less dense as the universe expanded. After an initial accelerated expansion called the inflationary epoch at around 10−32 seconds, and the separation of the four known fundamental forces, the universe gradually cooled and continued to expand, allowing the first subatomic particles and simple atoms to form. Dark matter gradually gathered, forming a foam-like structure of filaments and voids under the influence of gravity. Giant clouds of hydrogen and helium were gradually drawn to the places where dark matter was most dense, forming the first galaxies, stars, and everything else seen today. It is possible to see objects that are now further away than 13.799 billion light-years because space itself has expanded, and it is still expanding today. This means that objects which are now up to 46.5 billion light-years away can still be seen in their distant past, because in the past, when their light was emitted, they were much closer to Earth.

From studying the movement of galaxies, it has been discovered that the universe contains much more matter than is accounted for by visible objects; stars, galaxies, nebulas and interstellar gas. This unseen matter is known as dark matter[18] (dark means that there is a wide range of strong indirect evidence that it exists, but we have not yet detected it directly). The ΛCDM model is the most widely accepted model of our universe. It suggests that about 69.2%±1.2% [2015] of the mass and energy in the universe is a cosmological constant (or, in extensions to ΛCDM, other forms of dark energy, such as a scalar field) which is responsible for the current expansion of space, and about 25.8%±1.1% [2015] is dark matter.[19] Ordinary ('baryonic') matter is therefore only 4.84%±0.1% [2015] of the physical universe.[19] Stars, planets, and visible gas clouds only form about 6% of ordinary matter, or about 0.29% of the entire universe.[20]

There are many competing hypotheses about the ultimate fate of the universe and about what, if anything, preceded the Big Bang, while other physicists and philosophers refuse to speculate, doubting that information about prior states will ever

Answer:

Explanation: A charged body loses its charge when we touch it with our hand because some of the charge flows through our body to the ground earthing. As a result the charge on the body decreases every time we touch it. This is because of earthing.

Explanation:

yw .

Explanation:

When we touch a charged body, it loses its charge, due to the process of earthing. Our body is a good conductor of electricity. It transfers the charges to the earth

The angle of attack at which an airfoil/wing stall will occur, and you would like me to include the terms gross weight, cg (center of gravity), and an increase in gross weight in my answer.

The angle of attack at which an airfoil/wing stall will change with an increase in gross weight. As the gross weight of the aircraft increases, the wing will need to produce more lift to maintain level flight, which requires a higher angle of attack. If the center of gravity (cg) is moved forward, the aircraft will experience a more nose-heavy condition, which may require an increase in the angle of attack to maintain level flight, leading to a higher stall angle of attack.

If the CG is moved forward is called the critical angle of attack. This angle is determined by the airfoil's shape and is independent of the weight of the aircraft. However, the critical angle of attack will change with an increase in gross weight. As the weight of the aircraft increases, the lift generated by the wings must also increase to maintain level flight. This requires a higher angle of attack, which means the critical angle of attack will increase as well.

However, the stall angle of attack remains the same regardless of the gross weight, as it is determined by the airfoil's specific design and aerodynamic characteristics.

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c) Temperature, Copper and water will both be at the same temperature when thermal equilibrium is reached. So, the temperature will be the same.

a) Kinetic energy, At thermal equilibrium, the kinetic energy of copper and water is proportional to the number of particles, which is proportional to the molar mass. Since copper has a higher molar mass than water, it will have a higher kinetic energy.

At thermal equilibrium, copper will have a faster average particle speed than water because average particle speed is also related to the square root of kinetic energy.

Chemical equilibrium refers to the situation in a chemical process where both the reactants and products are present in concentrations that have no further tendency to vary over time, preventing any discernible change in the system's characteristics.

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Answer:

the one above the surface of earth

Explanation:

earth has gravity the ball of the moon would float away

Answer:

223

Explanation:

1243rrheggqfggqff

The image is approximately 9.33 cm away from the mirror, on the object's side.

To determine the image location formed by a converging mirror, we can use the mirror equation:

1/f = 1/d_o + 1/d_i

where:

f is the focal length of the mirror,

d_o is the object distance (distance of the object from the mirror), and

d_i is the image distance (distance of the image from the mirror).

In this case, the focal length (f) is given as 7 cm, and the object distance (d_o) is 4 cm.

Plugging in the values into the mirror equation:

1/7 = 1/4 + 1/d_i

To find the image distance (d_i), we can solve for it:

1/d_i = 1/7 - 1/4

1/d_i = (4 - 7) / (4 * 7)

1/d_i = -3 / 28

Taking the reciprocal of both sides:

d_i = 28 / -3

d_i ≈ -9.33 cm

The negative sign indicates that the image formed by the converging mirror is virtual and located on the same side as the object.

Therefore, the image is approximately 9.33 cm away from the mirror, on the object's side.

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Answer:

Explanation:

We are given the following the following

Initial speed u = 0.5m/s

initial distance S1 = 15cm = 0.15m

Final distance = 0m

Required

Final speed v

Using the equation of motion;

v² = u²+2gS

v² = 0.5²+2(9.8)(0.15)

v² = 0.25+2.94

v² = 3.19

v = √3.19

v = 1.786m/s

Hence  its speed when it reaches the bottom is 1.786m/s

Answer:

30 cm to 1 mm

Explanation:

30 cm to 1 mm

The kinematics and Newton's second law allow us to find the height from which the block system descends is:

             y = 6.54 m

Given parameters

To find

Newton's second law gives a relationship between the net force, the mass, and the acceleration of the body.

      ∑ F = m a

Where the bold letters indicate vectors, F is the force, m the mass and the acceleration of the body.

Kinematics studies the movement of bodies, looking for relationships between position, velocity and acceleration

              y = v₀ t + ½ a t²

In the attached we have a free body diagram of the system, let's write Newton's second law.

          T - W₁ = m₁ a

         -T + W₂ = m₂ a

Let's solve the system of equations.

          W₂ - W₁ = (m₁ + m₂) a

          a = \(\frac{m_2-m_1}{m_2+m_1} \ g\)

Let's calculate

          a = \(\frac{2 -4}{ 2 +4} \ 9.8\)  

          a = -3.27 m / s²

The negative sign indicates that the heaviest body is descending.

Now we can use kinematics to find the height, as the system comes out of rest the initial velocity is zero, when he reaches the ground his height is zero.

             y = y₀ + v₀ t + ½ a t²

             0= y₀ + 0  +½ a t²          

Let's calculate

             y₀ = ½ 3.27 2²

             y = 6.54 m

In conclusion, using kinematics and Newton's second law we can find the height from which the block system descends is:

             y = 6.54 m

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310 nm

310 nm wavelength of light is the best choice when attempting to quantitatively relate solution absorbance and concentration.

The Beer-Lambert law states that "the quantity of light absorbed by a substance dissolved in a fully transmitting solvent is directly proportional to the concentration of the substance and the path length of the light through the solution."

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The fastest stars are the ones with c) the dots farthest apart.

In the diagram, each dot represents the position of a star at one-year intervals. The greater the distance between the dots, the more the star has moved within that one-year time frame.

Stars with dots close together indicate that the star is moving relatively slowly in its orbit because it has not traveled as far in the same one-year interval. On the other hand, stars with dots farther apart are moving faster because they have covered a larger distance in the same amount of time. This faster movement can be attributed to various factors, such as the mass and proximity of the objects they are orbiting, as well as the overall characteristics of their orbits.

In summary, by examining the distances between the dots representing the stars' positions at one-year intervals, we can determine their relative speeds. Stars with dots farther apart are moving the fastest in their orbits during the time period indicated by the dots. Therefore, option C is correct.

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Notice that some of the stars on the diagram are represented by a series of dots that are very close together, while others have their dots farther apart.

Keeping in mind that all the stellar positions were measured at one-year intervals, which stars are moving the fastest in their orbits during the time period indicated by the dots?

The fastest stars are the ones with _______________.

a) the dots closest together

b) the most dots

c) the dots farthest apart

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Work is required to accelerate it from rest to a rotation rate of 1.00 revolution per 7.00s is 12,640 Joules

The following equation is used to calculate the net work necessary to accelerate a merry-go-round from resting to a rotational speeds with one rotation every 7.00 secs:

Work is calculated as (mass x radius x angular acceleration) / 2.

In which: 1440 kg in mass

R = 7.50 meters

Angle acceleration is equal to 2/7.00s times 0.89 rad/s2.

Hence, this mathematical methodology is used to compute the net work needed:

Work is equal to (1440 kg x 7.50m2 x 0.89 rad/s2) / (2 x 7.50m x 1440 kg x 1 revolution/7.00s) / 2 = 5,524,000 J or 5.52 MJ.

Acceleration was its term for the variation in velocity. Generally speaking, and sometimes not, acceleration denotes a shift in speed. Regardless of whether an object is moving in a circle, its velocity route is still changing, therefore it keeps gaining speed.

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The extent of the greenhouse effect for Venus is 597.98 Kelvin if the observed surface temperature of Venus is 700 K.

The solar constant, or the amount of energy that the sun emits per unit area per unit time, can be calculated using the Stefan-Boltzmann law:

E = σT^4

where σ is the Stefan-Boltzmann constant (5.67 x 10⁻⁸ W/m² K⁴) and T is the temperature of the sun in kelvins.

The radiant energy received by Venus from the sun can be calculated as follows:

E = (σT⁴) × (πR²) / (4πd²)

where R is the radius of the sun and d is the average distance of Venus from the sun.

E = (5.67 x 10⁻⁸) × (5770)⁴ × (π × (6.955 x 10⁸)²) / (4π × (1.08 x 10¹¹)²)

E = 651.59 Joules

Next, we can calculate the temperature of Venus if it were not for the greenhouse effect, it radiates as a blackbody with an emissivity of 0.75. This temperature can be calculated using the following equation:

E = σT₁⁴

Where T₁ is the surface temperature of Venus.

T₁ = (E / σ)⁽°²⁵⁾ = (651.59 / (5.67 x 10^-8))^(1/4)

T₁ = 102.82 K

The greenhouse effect can be calculated as the difference between the observed surface temperature of Venus (700 K) and the temperature of Venus without the greenhouse effect:

Greenhouse effect = 700 K - T₁

= 700 - 102.82 = 597.18

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(a) The average frequency that you will hear is 461 Hz.

(b) The beat frequency will be 8 Hz.

(a) When two frequencies are played simultaneously, the human ear perceives the average of the two frequencies as the perceived pitch or average frequency. In this case, the two frequencies are 457 Hz and 465 Hz.

To find the average frequency, we can simply take the arithmetic mean of the two frequencies:

Average frequency = (457 Hz + 465 Hz) / 2 = 461 Hz.

Therefore, the average frequency that you will hear is 461 Hz.

b) The beat frequency is the difference between the two frequencies. In this case, the two frequencies are 457 Hz and 465 Hz.

To find the beat frequency, we subtract the lower frequency from the higher frequency:

Beat frequency = 465 Hz - 457 Hz = 8 Hz.

Therefore, the beat frequency will be 8 Hz.

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Answer:

In a neutralization reaction, hydronium and hydroxide ions react to form water.

Explanation:

Acids/Bases and how they interact:

A Bronsted-Lowry base is a substance that tends to bond with and "steal" a hydrogen ion, while an acid is a molecule containing a hydrogen ion that prefers to dissociate. Acids "give up" their hydrogen ions to water molecules in water, resulting in the formation of a hydronium ion. The pH of a given solution is determined by the amount of hydronium ions present.

A quick neutralization reaction takes place when a base is added to an acid because bases want to "take" the hydrogen. We have the ideal combination of bases that want to "take" the hydrogen ion and acids that want to "give up" the hydrogen ion, which allows them to neutralize one another. A conjugate base is created when hydrogen separates from an acid; having had its hydrogen torn from the complex, it may now receive a hydrogen (i.e., acts as a base). Once the base has a hydrogen, it behaves as a conjugate acid; it may then "lose" that hydrogen and behave as an acid.

Depending on which form the molecule favors, the acid's potency varies. The fact that hydrochloric acid (HCl) fully dissociates in aqueous solutions makes it a powerful acid:

HCl + H₂O -> Cl- + H₃O+

That is to say that the reaction equation strongly favours the right side.

Acetic acid, on the other hand, is a weak acid because only a small part of it dissociates:

CH₃COOH + H₂O <--> CH₃COO- + H₃O+

In contrast to the bulk of the chemical, which is shown on the left in the uncharged state, only a minor portion of acetic acid dissociates.

This brief explanation of acids and bases anthropomorphizes chemical substances as aware creatures with specific preferences for certain actions. These so-called "preferences" are, in reality, rough summaries of the relative stabilities of the compounds (acid vs. its conjugate base), mostly as a result of electrical processes.

Answer:

hydrogen and water other answer is wrong

Explanation:

A horizontal tube consists of a 7.0-cm diameter pipe that narrows to a 2.0-cm-diameter throat. In the pipe, the water pressure is twice atmospheric pressure and the water flows with a speed of 0.40 m/s.

The continuity equation relates the speed of a fluid to its cross-sectional area and the flow rate, and it is as follows:A1V1 = A2V2Where, A1 and A2 are the cross-sectional areas of the pipe and throat, respectively; V1 is the speed of water in the pipe, and V2 is the speed of water in the throat. The following equation may be derived from Bernoulli's equation:P1 + 1/2ρV1² = P2 + 1/2ρV2²Where, P1 is the pressure in the pipe, P2 is the pressure in the throat, and ρ is the density of the fluid. Bernoulli's equation applies to any incompressible fluid flowing through a pipe at a steady state Since the water is in turbulent flow at the throat, the assumption is that all of the pressure energy in the fluid is converted to kinetic energy. This occurs when the kinetic energy of water molecules is larger than the pressure energy in the fluid, resulting in turbulent flow.

The pressure in the throat can then be computed by equating the kinetic energy of water molecules in the throat to the pressure energy in the fluid at that location.ρV22/2 = P2where ρ is the density of water, and V2 is the velocity of water in the throat Substitute the value in the equation:ρ = 1000 kg/m³V2 = A1V1/A2 = π/4d₁²V1/A2 = (π/4 × 0.07² × 0.4)/ (π/4 × 0.02²) = 1.96 m/sP2 = ρV22/2 = 1000 × 1.962/2 = 1960  the pressure in the throat is 1960 Pa, assuming that the water's speed at that point is large enough that the water there is in turbulent flow.

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Answer:

They are made of one type of atom.

Explanation:

Answer:

The answer is A

Explanation:

Answer:

n = 1.6

Explanation:

The formula for the calculation of the absolute index of refraction is given as follows:

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

where,

n = index of refraction

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

v = speed of light in the piece of plastic = 1.87 x 10⁸ m/s

Therefore,

\(n = \frac{3\ x\ 10^8\ m/s}{1.87\ x\ 10^8\ m/s}\)

n = 1.6

Mineralogically, barite is a sulfate, bornite is a sulfide, cuprite is an oxide, magnesite is a carbonate.

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Among the mineral groups, barite is a sulfide mineral, bornite is a sulfide mineral, cuprite is an oxide mineral, and magnesite is a carbonate mineral.

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Answer:

P = 1 / f = 1 / 16.7 = .06 sec      period of 1 revolution

Period of 1/3 revolution = .06 s / 3 = .02 sec

If the light flashes every .02 sec the fan will appear motionless

Answer:

Greater

Explanation:

Distance (height) and mass determine the amount of Potential energy in an object.