How to find the magnitude of the velocity of the canoe relative to the river?

An object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.

The percentage of Weight change =( 140-32.56) / 140  X100

                                     = 76.74 %.

F = force

G = gravitational constant

m_1 = mass of object 1

m_2 = mass of object 2

r = distance between centers of the masses

F =\(G \frac{ m_1 m_2}{r^2}\)

F = 140N (object on the surface of the earth)

radius of the earth = 6 378.1 x 10^3 m

new distance = \(6.3781 x 10^6 + 6.7 x10^6. =13.07 x 10^6.\)

F1/F2 =\((13.07 x10^6)^2/(6.3x10^6)^2\).

F1/ F2 = 4.3

140 N /F2 = 4.3

F2 =140/ 4.3 = 32.56 N

The percentage of Weight change =( 140-32.56) / 140  X100

                                     = 76.74 %.

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Answer:

down below

Explanation:

I assume you're asking about it's orbit around the sun. I believe the Earth's orbit around the sun would be shorter. If the Earth sped up, one can assume that means the days are shorter and the rate at which the Earth orbits the sun would also speed up.

This sounds like an open ended question, so I don't think there can be a wrong answer.

Hope this helps! :)

Answer:

Easy search it on g o o g l e

When a car's velocity is positive and its acceleration is also positive, the car's overall motion is speeding up in a forward direction.

Velocity is the measure of an object's speed in a specific direction, while acceleration is the measure of how quickly an object's velocity changes over time. So, if both the velocity and acceleration are positive, the car's speed is increasing in the forward direction. This means that the car is moving faster and faster in a forward direction.

Likewise, it can be said that the automobile develops an accelerated movement.

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Both magnitude and direction. Centripetal acceleration always act towards the center of the circle and have constant value.

"When a body moves in a circular path the acceleration acting towards the center of the circle is called centripetal acceleration." Hence the magnitude and direction will not change.

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Answer:

When two tectonic plates meet, we get a “plate boundary.” There are three major types of plate boundaries, each associated with the formation of a variety of geologic features.

Explanation:

When the plates meet at the boundaries the convergent boundaries lie at the collision of two plates and the divergent lies near mid-oceanic ridges.

The earth plate tectonics are divided into the three types of plates as convergent which is the destruction of crust and are found where the heavy and light plate comes and colloid with each other submerging the heavier plate into the mantel.

The divergent ones found near the mid-oceanic ridges are the formation of a new plate as the plates diverge away from the ridges.

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Answer:

B

Explanation:

Answer:

D. μs = Fs/Fn

Explanation:

The static friction coefficient, is always less than 1, for this reason, the friction force will always be less than the force of the body weight.

Answer:

D is correct. I just did it!!

Explanation:

Answer:

\(20\; {\rm m\cdot s^{-1}}\), assuming that friction is negligible.

Explanation:

If an object of mass \(m\) moves at a velocity of \(v\), the momentum \(p\) of this object would be \(p = m\, v\).

if friction is negligible, the sum of the momentum should be the same before and after the collision.

Before the collision:

In other words, the sum of momentum was \(40\; {\rm kg\cdot m\cdot s^{-1}}\) before the collision.

After the collision:

The sum of the momentum stays unchanged at \(40\; {\rm kg\cdot m\cdot s^{-1}}\). Subtract the momentum of the ice skater from the sum to find the momentum of the snowman:

\(40\; {\rm kg\cdot m\cdot s^{-1}} - 0\; {\rm kg\cdot m\cdot s^{-1}} = 40\; {\rm kg\cdot m\cdot s^{-1}}\).

Divide the momentum of the snowman by its mass to find its velocity:

\(\begin{aligned}\frac{40\; {\rm kg\cdot m\cdot s^{-1}}}{2\; {\rm kg}} = 20\; {\rm m\cdot s^{-1}}\end{aligned}\).

In other words, the collision of the snowman would be \(20\; {\rm m\cdot s^{-1}}\) after the collision.

Jim Crow laws was the legal measure which allowed whites in southern states to keep blacks from voting after reconstruction ended.

These were the state and local laws which enforced racial segregation in the Southern part of the United States.

Due to this laws, whites in southern states kept blacks from voting after reconstruction ended.

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the question is not clear for me the mass of the word and the pivot the artist as the counterweight of the end we calculate the mass of the counterweight sorry

Answer:

calculate mass of the counterweight?

Explanation:

The tangential component of the linear acceleration of a point on the edge of the wheel 2.0 s after it has started accelerating is approximately \(1.48 m/s^2.\)

First, let's convert the initial and final speeds from revolutions per minute (rpm) to radians per second:

ω1 = 130 rpm = 130(2π/60) rad/s ≈ 13.6 rad/s

ω2 = 280 rpm = 280(2π/60) rad/s ≈ 29.3 rad/s

The angular acceleration can be calculated as:

α = (ω2 - ω1)/t = (29.3 - 13.6)/5.0 ≈ \(3.14 rad/s^2\)

At time t = 2.0 s, the angular velocity is:

ω = ω1 + αt = 13.6 + 3.14(2.0) ≈ 20.9 rad/s

The tangential component of the linear acceleration can be calculated as:

aT = rα

where r is the radius of the wheel. Substituting r = 0.47 m and α = \(3.14 rad/s^2\), we get:

aT = (0.47)(3.14) ≈ \(1.48 m/s^2\)

Therefore, the tangential component of the linear acceleration of a point on the edge of the wheel 2.0 s after it has started accelerating is approximately \(1.48 m/s^2.\)

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Answer: Доброе утро, ответ 5+5="4

Explanation:

The work done to pull the wagon 100 m at a constant speed is 1000J.

Work is the amount of force that is required to displace any object.

Work is performed when energy is transferred from one energy store to another. It is also performed when we apply a force to an object and it moves.

When work is performed against a frictional force on an object, the temperature of the object rises.

Force is the energy input to change the position of the object.

Given,

Tension T = 20 N

distance, d = 100 m

angle, θ = 60°

Work done = force x distance x Cos θ

Substituting the values in formula, we get

W = 20 x 100 x Cos 60

W = 2000 x 0.5

W = 1000 J

Therefore, the work done to pull the wagon 100 m at a constant speed is 1000J.

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[NOTE: THIS IS AN INCOMPLETE QUESTION. THE COMPLETE  QUESTION IS: You are pulling a child in a wagon. The rope handle is inclined upward at a 60∘ angle. The tension in the handle is 20 N. How much work does the rope do on the wagon if you pull the wagon 100 m at a constant speed?]

510 Watts is the initial energy used while she was jogging, according to the statement made.

A concept "displacement" refers to a shift inside of a material's location. It is an vector field with a size and direction. The indicator for it is an arrow pointing from the initial location to the ending place. For instance, an entity's line changes if it moves from position A to position B.

Given:

mass = 51 kg

time = 5 seconds

displacement = 5 meters

Work = F × s

:. F = m × a

F = 51 × 10

= 510 Newton

So, the work done is:

W = 510 × 5

= 2,550 Joules

Now the power : Work/Time

=> 2,550/5

=> 510 Watt

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An integrated circuit is a set of microscopic electronic components etched onto a thin slice of semiconducting material.

The integrated circuit is a low coast circuit which consist of active and passive components that are joined together on a single crystal chip of silicon .It is also called microelectronic circuit or a microchip. Its short form is Ics and Ics can be designed as a digital device such as microprocessor, or logic gates , or analog devices such as audio & instrumental amplifiers.

The semiconductor materials are silicon , germanium and gallium arsenide.

And gallium arsenide is the second most common semiconductor after silicon. It is used in laser diodes, solar cells .

The microprocessor is can be described as that it is a computer processor logic and a small number of integrated circuit. It contains the arithmetic logics and perform the functions of a computer's central processing unit.

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Answer:

-4500 N

Source: Brainly

The police officer must be angry 0_0

Answer:

187.5

Explanation:

For the wood crate to move, the force applied (minimum horizontal force) must be greater than the static friction between the wood crate and the wood floor

Given that Jim wishes to push a 100. N wood crate across a wood floor.

The weight of the wood = 100N

The weight will produce a normal reaction N which is equal in magnitude to the magnitude of the weight. That is,

N = mg = 100N

For the wood crate to move, the force applied must be greater than the static friction between the wood crate and the wood floor.

Static friction = μN

Where μ = static friction.

Therefore, the minimum horizontal force that would be required to start the crate moving depend on the nature of the surface of the wood floor.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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In summary, when an electric current forms an electric field, a magnetic field is created, leading to the phenomenon of electromagnetism. This relationship is described by Ampere's law and has practical applications in various electrical devices and systems.

When an electric current forms an electric field, a magnetic field is created in the phenomenon of electromagnetism. This is known as Ampere's law, which states that a magnetic field is produced around a current-carrying conductor. The magnetic field is perpendicular to both the current direction and the direction of the electric field.

The strength of the magnetic field is determined by the magnitude of the current flowing through the conductor. This can be demonstrated using the right-hand rule, where if you point your right thumb in the direction of the current, your curled fingers will indicate the direction of the magnetic field lines.

This phenomenon of creating a magnetic field through an electric current has numerous practical applications. For example, it is the principle behind electromagnets used in various devices like electric motors, generators, and transformers. Electromagnetic induction, which relies on the interaction between electric and magnetic fields, is also responsible for the operation of electric generators and the transmission of electricity through power lines.

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According to Einstein's Theory of Relativity, the closer an object gets to the speed of light, the more its mass increases. As an object approaches the speed of light, its mass would become infinitely large, requiring an infinite amount of energy to propel it any further. Therefore, an object with a nonzero mass can never reach the speed of light as it would require an infinite amount of energy.

Additionally, as the object gets closer to the speed of light, time slows down for it relative to a stationary observer, and it would experience length contraction. Thus, the laws of physics prevent an object with a nonzero mass from exceeding the speed of light.
An object with nonzero mass cannot travel as fast as the speed of light due to the principles of Special Relativity, formulated by Albert Einstein. As an object with mass accelerates, its energy increases. When approaching the speed of light, the object's mass experiences relativistic effects, such as time dilation and length contraction.

As a result, the energy required to continue accelerating increases exponentially. To reach the speed of light, an infinite amount of energy would be needed, which is physically impossible. Moreover, the mass of the object would become infinite as well, causing an insurmountable barrier to reaching the speed of light. Therefore, an object with nonzero mass can never achieve this ultimate speed.

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Both path integrals and Hamiltonian physics are fundamental in quantum mechanics, but they are used in different ways and for different purposes.

Path integrals, also known as the Feynman path integral formulation, is a formulation of quantum mechanics that provides a way to calculate the probability amplitude of a particle's path in space-time. It is used to calculate the probability of a particle going from one point to another in a given time and is useful for studying quantum systems with a large number of degrees of freedom.

Hamiltonian physics, on the other hand, is a formulation of classical mechanics that describes the evolution of a system in terms of its energy. In quantum mechanics, the Hamiltonian is used to describe the time evolution of a quantum system and is the operator corresponding to the total energy of the system.

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Utilizing energy considerations, the kinetic energy is: Ek = 3/5KA².

In physics, an object's kinetic energy is the energy it has as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity. The body retains its kinetic energy after gaining it during acceleration until its speed changes.

Kinetic Energy has the following characteristics:

The computation of the above result is given as follows;

The total energy is given by the expression:

E = E\(_{k}\) + E\(_{p}\)

So, the energy is conserved, the total energy expression is:

E=1/2 KA²

Meanwhile, the potential energy is:

E\(_{p}\) = 1/2K(A/2)²

The Kinetic Energy is:

E\(_{k}\) = E - E\(_{p}\)

Thus,

E\(_{k}\) = 1/2(KA)² - 1/2K(A/2)²

= 3/8KA²

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Full Question;

To learn to apply the law of conservation of energy to the analysis of harmonic oscillators. Systems in simple harmonic motion, or harmonic oscillators, obey the law of conservation of energy just like all other systems do. Using energy considerations, one can analyze many aspects of motion of the oscillator. Such an analysis can be simplified if one assumes that mechanical energy is not dissipated. In other words, E=K+U=constant, where E is the total mechanical energy of the system, K is the kinetic energy, and U is the potential energy

In words, the R2 of 0.27 means that 27% of the variability in y (24-hour urinary Na) can be explained by x (estimated 24-hour urinary Na) obtained from casual urine specimens at one point in time.

The INTERSALT Study was designed to investigate the relationship between dietary sodium and blood pressure (hypertension) in populations worldwide.

The study included 10,079 men and women from 52 population samples in 32 countries. One of the goals of the study was to quantify the relationship between 24-hour urinary Na (y) and estimated 24-hour urinary Na (x) obtained from casual urine specimens at one point in time.

The investigators presented a simple linear regression of y on x, separately for men and women. The regression equation for men was: Y = 1.03x + 7.19, with R2 = 0.27, n = 1369.

The coefficient of determination, R2, is a statistical measure that represents the proportion of the variance for a dependent variable (y) that's explained by an independent variable (x) or variables in a regression model.

In this case, the R2 of 0.27 means that 27% of the variability in y (24-hour urinary Na) can be explained by x (estimated 24-hour urinary Na) obtained from casual urine specimens at one point in time. The remaining 73% of the variability in y is due to other factors that are not included in the regression model.

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Effective voltage for the Gi system

V = 550 KV = 550 * 10 3 * v

Current I = 4.5MA = 4.5 * 10 6 *

A The strength of the Lo to Jupiter current

P= VI\s= (550 * 10 ^ 3)(4.5 * 10 ^ 6)

K = Kilo = 10 3 M = Mega = 106

P = 24.75* 10 ^ 7 W

What is magnetic effects?

Moving electric charges and magnetic dipoles combine to form a magnetic field, which acts as a force field on other adjacent moving charges and magnetic dipoles. Given that it has both a magnitude and a direction, the magnetic field is a vector quantity.  

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The electric force between the droplets, and the horizontal acceleration this force produce on the droplets are: 5.84*10^-7 N and 0.32 m/s² respectively

In physics the electric force is the force that attracts or repels two charges (q) separated at a distance called (r), this is expressed in the international system of units in Newton.

To solve this exercise the electric force formulas and the procedures we will use are:

Where:

Given Info:

Applying the electric force formula we have:

F = (k * q1 * q2)/r²

F = [(9 *10^9 N*m²/C² * (2.9*10^-11 C) * (2.9*10^-11 C)]/ (3.6*10^-3 m)²

F = 7.569*10^-12 N*m² /1.296*10^-5 m²

F = 5.84*10^-7 N

Applying the force formula and clearing the acceleration, we get:

a= F/m

a= 5.84*10^-7 N/ 1.8*10^-6 kg

a= 0.32 m/s²

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The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.

Velocity is the rate of change of displacement over time.

As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.

So option A is correct.

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