A forklift pushes a 185kg box into a 335kg box, which slides into a 80kg box. If all 3
boxes slide across the floor at 4.5m/s, how much force does the 185kg box exert on
the 335kg box? The coefficient of friction between each box and the floor are listed
in the table below:

The second option is the correct answer to the question. The complete question is attached

In the beginning, the cart started from rest and moved to the right. The movement represents positive acceleration

In the middle, there is no change in velocity hence no acceleration. This means that the value of acceleration is zero

A the end, the cart had a negative acceleration which brings the cart to rest.

Acceleration refers to the change in velocity with time. Usually when there is no change in velocity acceleration is zero. The value can also be positive or negative depending on the velocity.

When there is an increase in velocity, the result is positive acceleration but in a situation when there is a decrease in velocity the result is negative acceleration. At the peak pf negative acceleration the result is to put the object accelerating to a stop.

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Answer:

   \(4 m/s^{2}\)

Explanation:

You can use the formula a = (v2 - v1)/t, where a is the acceleration, v1 is the initial velocity, v2 is the final velocity, and t is the time interval.

In this case, v1 is 0 m/s (since the car starts at rest) and v2 is the final velocity of the car after it travels 100 m in 5 seconds. You can use the formula v = d/t to find the final velocity, where v is the velocity, d is the distance traveled, and t is the time taken. Plugging in the given values, you get:

v = d/t

= 100 m / 5 s

= 20 m/s

Now you can plug in the values for a, v1, v2, and t into the formula to find the acceleration:

a = (v2 - v1)/t

= (20 m/s - 0 m/s)/5 s

= \(4 m/s^{2}\)

Therefore, the kinetic energy of the goose is approximately 928.2 joules.

To calculate the kinetic energy of the goose, we need to convert its mass from pounds to kilograms, and its velocity from miles per hour to meters per second.

1 pound = 0.453592 kg

1 mile/hour = 0.44704 meters/second

Using these conversion factors, we can find the mass and velocity of the goose in SI units:

mass = 20.3 lb x 0.453592 kg/lb = 9.20513 kg

velocity = 10.1 miles/hour x 0.44704 meters/second = 4.51444 m/s

The kinetic energy of the goose is given by the formula:

KE =\((1/2)mv^2\)

here KE ia all about the kinetic energy, and m is the mass, here v is the velocity.

Put all the values so that we have found, and we get:

KE = (1/2)(9.20513 kg)\((4.51444 m/s)^{2}\) = 928.2 joules

Therefore, the kinetic energy of the goose is approximately 928.2 joules.

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While there is no direct relationship between speed and thinking distance, higher speeds can result in longer thinking distances due to the increased reaction time needed by the driver.

The relationship between speed and thinking distance is not a direct one, as thinking distance is primarily influenced by the driver's reaction time rather than the actual speed of the vehicle. Thinking distance refers to the distance traveled by a vehicle during the driver's reaction time after perceiving a hazard.

However, there is an indirect relationship between speed and thinking distance in the sense that higher speeds generally result in longer thinking distances. When a vehicle is traveling at a higher speed, the driver needs more time to process information, make decisions, and react to potential hazards. Therefore, a higher speed can lead to a longer thinking distance.

It is important to note that thinking distance is just one component of the total stopping distance, which also includes braking distance. Braking distance is directly influenced by the speed of the vehicle. Higher speeds require longer braking distances to bring the vehicle to a stop.

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Work

In physics work is said to be done when a force acting on a body displaces it through a certain distance. The work by a constant force is measured by the dot product of force will displacement.

i.e. W = F.S or W = F S cosq …(1)

where F = force and S = displacement

And q = angle between F and S.

Hope this helps! <3

Answer: B is DEFINITELY the answer no doubt about it!

It must be either speeding up, or slowing down, or turning. There are no other possibilities.

Explanation:

Hey there!!!

As sound is a mechanical wave,it requires the medium to propagate. The most common waves are:

Hope it helps..

Answer:

Explanation:

V

R t t

V t Q P t t

R R

= ⋅ =

=

⋅ ⋅

= = = ⋅ ⇒ = =

The ratio of the  deflection when each galvanometer is connected with the cell is 13:12.

A moving coil used in a galvanometer is used to measure a small electrical current or a function of the current. The current's forces generate mechanical rotational forces that cause the deflection.

Given that:

EMF of the cell: e = 25 volt.

Internal resistance: r = 50 ohm.

Current flows through first galvanometer: I₁ = 25 /( 10+50) amp = 5/12 amp.

Current flows through second galvanometer: I₂ = 25 /( 600+50) amp = 5/130 amp.

Number of turns in first galvanometer: n₁ = 50

Number of turns in second galvanometer: n₂ = 500

As all other conditions of the two galvanometers are same; the ratio of the deflection  when each galvanometer is connected with the cell =

n₁I₁ : n₂I₂

= 50 (5/12) : 500(5/130)

= 1/12 : 1/13

= 13 : 12.

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Answer:

Element Symbol # of Atoms

Oxygen O 2

Sulfur S 1

Explanation:

A quota is a trade restriction imposed by the government that limits the quantity of goods or the amount of money that a country may spend on them at one time for import or export.

Thus this is the meaning of quota.

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The value of the mean of all values of d (Hd) is -0.04.

As per data the following temperatures,

Temperature (°F) at 8 AM 98.3

Temperature (°F) at 12 AM 99.1 98.8 99.2 97.1 97.4 97.8 97.2

Temperature (F) at 8 AM 99.3 98.8 97.6 97.7 97.1

Temperature (°F) at 12 AM 99.1 99.2 97.8 972 97.4

Let the temperature at 8 AM be the first sample, and the temperature at 12 AM be the second sample. Then,

d = x₂ - x₁

Now, we need to find the values of d for all five subjects.

Therefore, d is as follows:

d₁ = 99.3 - 99.1

   = 0.2

d₂ = 98.8 - 99.2

    = -0.4

d₃ = 97.6 - 97.8

    = -0.2

d₄ = 97.7 - 97.2

   = 0.5

d₅ = 97.1 - 97.4

    = -0.3

In general, Hd represents the mean of all values of d.

Thus, the value of Hd is:

Hd = (0.2 + -0.4 + -0.2 + 0.5 + -0.3) / 5

     = -0.04

Thus, the value of Hd is -0.04.

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Answer:

14

Explanation:

the left top is protons

hope this helps :)

The similarities between the two models of the solar system are :

The solar system can be represented using two different models ( the Earth centered model and the sun centered model ) in both model the sun or the earth is kept as a central planet while other planets including the moon and stars revolve round the central planet.

Hence we can conclude that the similaritied between the models are as listed above.

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The work done on the particle moving along path C is 2 units of work.

To compute the work done on a particle moving along path C, we can use the line integral formula:

Work (W) = ∫C F · dr

where F is the vector field and dr is the differential displacement along the curve C.

C is the curve r(t) = (1 + 4sin(t))i + (1 + 4sin²(t))j + (1 + 3sin³(t))k

F is the vector field F(x, y, z) = xi + yj + zk

To calculate the work, we need to find the dot product of F and dr, and integrate it over the curve C.

The differential displacement vector dr can be obtained by taking the derivative of r(t) with respect to t:

dr = (dx/dt)dt i + (dy/dt)dt j + (dz/dt)dt k

Let's calculate the derivatives:

dx/dt = 4cos(t)

dy/dt = 8sin(t)cos(t)

dz/dt = 9sin²(t)cos(t)

Now, we can express dr as:

dr = 4cos(t)dt i + 8sin(t)cos(t)dt j + 9sin²(t)cos(t)dt k

Next, we calculate the dot product F · dr:

F · dr = (xi + yj + zk) · (4cos(t)dt i + 8sin(t)cos(t)dt j + 9sin²(t)cos(t)dt k)

      = 4cos(t)dt + 8sin(t)cos(t)dt + 9sin²(t)cos(t)dt

Simplifying further:

F · dr = (4 + 8sin(t) + 9sin²(t))cos(t)dt

Now, we integrate the dot product over the curve C:

W = ∫C F · dr = ∫(4 + 8sin(t) + 9sin²(t))cos(t)dt

Given the limits of integration, we can now evaluate the line integral.

W = ∫(4 + 8sin(t) + 9sin²(t))cos(t)dt

Applying the limits of integration (0 to π/2), we have:

W = ∫[0 to π/2] (4 + 8sin(t) + 9sin²(t))cos(t)dt

To compute this integral, we can split it into three separate integrals:

W = ∫[0 to π/2] (4cos(t) + 8sin(t)cos(t) + 9sin²(t)cos(t))dt

Integrating term by term:

W = [4sin(t) + 4cos(t) - 8cos²(t)/2 + 9sin³(t)/3] evaluated from 0 to π/2

Plugging in the upper limit (π/2) and subtracting the value at the lower limit (0), we get:

W = [(4sin(π/2) + 4cos(π/2) - 8cos²(π/2)/2 + 9sin³(π/2)/3) - (4sin(0) + 4cos(0) - 8cos²(0)/2 + 9sin³(0)/3)]

Simplifying further:

W = [(4 + 0 - 0 + 0) - (0 + 4 - 4/2 + 0)]

 = 4 - 2

 = 2

Therefore, the work done on the particle moving along path C is 2 units of work.

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The complete question is:

if C is the curve given by r(t)=[1+4sin(t)]i +[1+4sin2(t)]j + [1+3sin3(t)]k, (0 to π/2) and F is the radial vector field given by F(x,y,z) = xi + yj +zk.

Compute the work done on a particle moving along path c.

Answer:

Fog forms in a valley

Explanation: that’s the only reasonable response

An example of condensation Fog disappears when the Sun comes out.

Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle.

The process through which the physical state of matter changes from the gaseous phase into the liquid phase Fog disappears when the Sun comes out.

An example of condensation Fog disappears when the Sun comes out.

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Nitrogen is a trace element in the ocean despite its abundance in the atmosphere.

The most prevalent element in our atmosphere, nitrogen, is essential for life. The soils and plants, as well as the water we drink and the air we breathe, all contain nitrogen. A crucial DNA building element, which determines our genetic makeup, is also important for plant growth, making it critical for the food we grow. Balance is important in everything, though; too little nitrogen prevents plants from thriving and reduces food yields, while too much nitrogen can be hazardous to plants and harmful to the environment. Lack of nitrogen causes plants to turn yellow, develop poorly, and produce smaller blooms and fruits.

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Answer:

-10

Explanation:

hope this helps :)

A resume is usually read for less than C. 30 seconds by an employer.

A resume is a document that presents your educational qualifications, experiences, and achievements that have taken place throughout your academic career and professional life. This document is crucial in a job application process, and it plays a key role in determining whether an employer is interested in interviewing you or not. Thus, it is necessary to write a well-written and a concise resume that catches the employer's attention in less than 30 seconds. This is because most employers go through many job applications and they do not have much time to read every resume thoroughly.

Therefore, it is essential to organize and format the resume in such a way that the key information and skills stand out. In addition, it is necessary to customize the resume to fit the job requirements of each job application, this can be done by researching the company and the job position to determine what skills and qualifications the employer is looking for. In conclusion, it is crucial to ensure that the resume is well-written, organized, and customized to fit the employer's requirements. So the correct answer is C. 30.

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2269 × 10-³ m can be written in scientific notation as follows: 2.269 × 10⁰.

Scientific notation is a method of writing, or of displaying real numbers as a decimal number between 1 and 10 followed by an integer power of 10.

It is an alternative format of such a decimal number immediately followed by E and an integer.

According to this question, 2269 × 10-³ metres is to be converted to scientific notation. We do this by shifting the decimal place backwards three times to obtain the following;

2.269 × 10⁰

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Answer:

372 252

Explanation:

Answer:

B

Explanation:

The feature that is true of both solar and wind power is (b) Both power sources produce no greenhouse gas emissions during normal operation.

This makes them a more environmentally friendly alternative to traditional fossil fuels, which emit carbon dioxide (CO2) and other harmful gases during combustion.

However, the other options are not completely accurate. Solar and wind power can be intermittent, but this does not necessarily mean that they require a backup energy source. Energy storage technologies, such as batteries or pumped hydro storage, can be used to store excess energy generated during times of high production and release it during times of low production.

Furthermore, while solar and wind power currently supply a small fraction of global energy demand, it is important to note that their usage is increasing rapidly. In fact, renewable energy sources, including solar and wind power, are projected to be the fastest-growing energy source over the next few decades.

In conclusion, solar and wind power's most significant shared feature is their ability to operate without producing greenhouse gas emissions. While they do have other characteristics that are sometimes associated with them, these features are not always completely accurate and may not apply in every circumstance.

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Approximately 8.4151% of the mechanical energy of the oscillator is lost in each cycle at the given amplitude.

The amplitude of a lightly damped oscillator decreases by 4.3% during each cycle.

To find the percentage of mechanical energy lost in each cycle, we need to consider the relationship between amplitude and energy.

Energy in an oscillator is proportional to the square of its amplitude (E ∝ A^2).

Since the amplitude decreases by 4.3%, we can represent the new amplitude as 0.957 times the original amplitude (100% - 4.3% = 95.7% = 0.957).

New energy (E_new) is proportional to the square of the new amplitude:

E_new ∝ (0.957 * A)^2

Now, we'll find the percentage of energy lost in each cycle by comparing the new energy to the original energy:

Percentage of energy lost = (1 - E_new/E) * 100%

Substituting the relationship between energy and amplitude:

Percentage of energy lost = (1 - (0.957 * A)^2 / A^2) * 100%

Simplifying the expression:

Percentage of energy lost = (1 - 0.957^2) * 100%

Calculating the percentage:

Percentage of energy lost ≈ (1 - 0.915849) * 100% ≈ 8.4151%

So, approximately 8.4151% of the mechanical energy of the oscillator is lost in each cycle.

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Answer:

31.6 times louder

Explanation:

A 165-dB sound is approximately 31.6 times more intense than an 85-dB sound. This means that the 165-dB sound is approximately 31.6 times louder than the 85-dB sound.

Answer:

Each of the joints represents a degree of freedom in the manipulator system and allows translation and rotary motion :) Hope this helps

When the spindle contacts the anvil on a standard SAE micrometer, the measurement of the object being measured can be taken.

The spindle is the movable part of the micrometer that comes into contact with the object, while the anvil is the fixed part that provides a stable surface for the object to rest against. The micrometer uses a calibrated screw mechanism to provide precise measurements in units of thousandths of an inch (or millimeters, depending on the type of micrometer).

Therefore, when the spindle contacts the anvil, the measurement can be read off the micrometer's scale or digital display, giving the exact size of the object being measured with a high degree of accuracy.

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