A 20 kg cart moving at 4 m/s has how much momentum?

40 kg*m/s
40 kg*m/s

5 kg*m/s
5 kg*m/s

80 kg*m/s

Explanation:

Latent heat of evaporation is the heat required  to change water to vapor at the same temperature boiling temperature.(100°C)

That water turns into vapor  when heated at temperature more than 100°C without any increase in temperature.

that is latent heat of vaporization Q  = mL

The symmetric peak divides the lights of short wavelength and long wavelength lights, which occurs at the green light boundary.

A symmetric peak refers to a peak that is roughly the same shape on both sides of the highest point. This means that the left and right sides of the peak are mirror images of each other.

Symmetric peaks are often seen in graphs or charts that represent data such as intensity versus wavelength graph as shown in the diagram.

At the the symmetric peak, the wavelength of the particle is 500 mm which corresponds to wavelength of green light.

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We should place the crimson cloud on ethene (\(C2H4\)) to represent the nucleophile and the blue cloud on hydrogen chloride (\(HCl\)) to represent the electrophile.

In the given response among ethene (\(C2H4\)) and hydrogen chloride (\(HCl\)), the nucleophile and electrophile may be identified as follows:

Nucleophile (pink cloud): The nucleophile is the electron-wealthy species that donates electron pairs. In this situation, ethene (\(C2H4\)) can act because the nucleophile because it has a π bond among the carbon atoms, which includes a high electron density.

Electrophile (blue cloud): The electrophile is the electron-poor species that accept electron pairs. In this situation, hydrogen chloride (\(HCl\)) can act as the electrophile because the hydrogen atom is in part wonderful (δ+) and may accept a couple of electrons.

So, you should place the crimson cloud on ethene (\(C2H4\)) to represent the nucleophile and the blue cloud on hydrogen chloride (HCl) to represent the electrophile.

Note: The response between ethene and hydrogen chloride generally involves the addition of \(HCl\) across the double bond of ethene to shape a chloroethane product.

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The correct question is:

"Identify the relevant nucleophilic and electrophilic parts of the reaction by placing the corresponding clouds on them. HOME THEORY MEDIA MISSION In front of you are ethene and a hydrogen chloride molecule. Identify the nucleophile and electrophile by placing the reactive center 'clouds' in the correct positions. 1. Pick up one of the clouds - the nucleophile (red) or the electrophile (blue). 2. Place the nucleophile (red) or electrophile (blue) cloud on the correct part of the reactants. 3. Repeat for the other cloud. 4. Press Check on the holo-table to check if vou are right. Chark H ? H H. | -H CI H E Nu SS: 3738 philic and ction by placing them. church"

Answer: 29.72

Explanation:

you multiply the number by 5 then divide by 18=

107x5= 535

535/18= 29.72

The higher the energy, the faster the particles vibrate (which means a higher frequency).

option D

Waves like sound  wave is produced when an object vibrates, creating a pressure wave.

This pressure wave causes particles in the surrounding medium to have vibrational motion. As the particles vibrate, they move nearby particles, transferring energy between neighboring particles, creating a faster vibration as the energy transmitted increases.

Thus, we can conclude that, waves have energy that causes particles in matter to vibrate. So, it stands to reason that the higher the energy, the faster the particles vibrate (which means a higher frequency).

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Answer:

Explanation:

Pneumatic and hydraulic systems have many similarities. Both pneumatics and hydraulics are applications of fluid power. They each use a pump as an actuator, are controlled by valves, and use fluids to transmit mechanical energy.

Answer:

I have know idea what that means lol.

Thanks for the free points. Hope you have a fantastic rest of your life!

Answer:

horizontal

Explanation:

because is straight

The shape of the position-time graph is required.

The shape of the graph will be a horizontal line.

In a position time graph the x axis represents the time and y axis represents the position.

The slope of the line in a position time graph gives the velocity.

\(m=\dfrac{\Delta y}{\Delta x}\)

If an object is not moving slope of the given line will be zero.

\(0=\dfrac{\Delta y}{\Delta x}\)

This is only possible when \(\Delta y=0\)

This is the case when the line is a horizontal line with no change in the value of \(y\)

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The angular momentum of an object depends on: the rate at which that the object rotates, the mass of the object, the shape of the object and the axis of rotation.

The definition of angular momentum is: the characteristic of any rotating object determined by the product of inertia and angular velocity.

It is a property of a rotating body determined by the product of the rotating object's moment of inertia and angular velocity. It is a vector quantity, so along with magnitude, direction must also be taken into account.

It depends on: the rate at which that the object rotates, the mass of the object, the shape of the object and the axis of rotation.

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Answer:

Mass,Velocity and Acceleration

Explanation:

Hope this helps and its different for everyone for me it was A,B and C what was it for you

Answer:

Explanation:

Magnetic field due to current carrying wire at a distance r from the  wire is

\(B=\frac{\mu_0I}{2r}---(1)\)

In our case

\(I=\frac{I_0}{2}\)

where,

I₀ = max current or peak current

and r = h (where h is the height of power line)

\(\therefore B=\frac{\mu (I_0/2)}{2h} \\\\=\frac{\mu_0 I_0}{4h} ----(2)\)

put

h ≈ 370m

I₀ ≈ 3KA

\(B= \frac{(1.26*10^-^6)(3*10^3)}{4*(370)} \\\\=2.5*10^-^6 T\)

The value of R is 379 kΩ. Answer: R = 379 kΩ.

Given data: Capacitance C = 8.0 µF

Voltage V = 11.0 V Charge q

= CV = 8.0 × 10⁻⁶ F × 11 V

= 88 × 10⁻⁶ C Initial voltage V₀ = 0 V

Final voltage V = 4.00 V Time t = 3.00 s

Let resistance R be x kΩ.

The voltage across the capacitor is given by, V = V₀(1 - e⁻ᵗ/ᵣ)

Where, τ = RC is the time constant of the RC circuit.

Substituting the given values,4.00 V = 0(1 - e⁻³/τ)⇒ 1 - e⁻³/τ

= 0V / 4.00 V = 0 / V₀ - e⁻³/τ⇒ e⁻³/τ

= 4.00 V / 11.0 V⇒ e⁻³/τ = 0.3636

Taking natural logarithm on both sides,

ln e⁻³/τ = ln 0.3636⇒ -³/τ

= -1.0094...⇒ τ = 3.03 s Since τ

= RC = 3.03 s,8.0 × 10⁻⁶ F × x × 10³ Ω

= 3.03 s x

= 378.75 kΩ

≈ 379 kΩ

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The capacitor is charged by an 11.0 V battery through a resistance R is 1.38 kO.

The potential difference across the capacitor reaches 4.00 V at a time 3.00 s after charging begins.

R = (t/0.693) * (Vc/Vb - 1)Where,

R = resistance in ohms

C = capacitance in farad

t = time taken for the potential difference across the capacitor to reach Vc in seconds

Vc = potential difference across the capacitor in volts

Vb = emf of the battery in volts.

R = (3.00 s/0.693) * (4.00 V/11.0 V - 1) = 2.17 * (-0.636) = -1.38 kO

Since resistance cannot be negative, there is an error in the calculations.

We have to change the sign to get the correct value.

Therefore, the value of R is 1.38 kO.

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Two factors. The independent variable is the light colour and the dependent variable is the mood. The ambient colour is not a factor as it is being controlled in each room.

A within-subjects experiment is used to assess the effect of light colour on mood. The experiment has a single light bulb with three different ambient colour schemes. The experiment features three rooms each with a different light bulb, there are factors in this experiment.
In this within-subjects experiment designed to assess the effect of light colour on mood, there is 1 factor being manipulated, which is the ambient colour of the light bulb.

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Meteorologists can distinguish a cold from a warm front because a cold front occurs when a cold air mass advances and replaces a warmer air mass, resulting in cooler temperatures and often stormy weather. On the other hand, a warm front exists where a warm air mass moves over and replaces a cooler air mass, resulting in a gradual increase in temperature and often steady rainfall.

A cold front occurs when a cold air mass advances into a region occupied by a warm air mass. As the cold air mass moves forward, it lifts the warm air mass, causing the warm air to cool and condense into clouds. This can result in the formation of thunderstorms and other types of precipitation, and often brings a rapid drop in temperature.

A warm front, on the other hand, exists where a warm air mass advances into an area occupied by a cooler air mass. As the warm air mass moves forward, it rises over the cooler air mass, causing the warm air to cool and condense into clouds. This can result in the formation of steady rain or drizzle, and often brings a gradual rise in temperature.

In summary, meteorologists can distinguish a cold front from a warm front based on the direction in which the air masses are moving and the temperature characteristics of each air mass.

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1) Cold fronts occur when a cold air mass moves into and replaces a warmer air mass.

This typically happens when a high-pressure system moves in, pushing cold air towards an area of low pressure.

2) As the cold air mass moves forward, it forces the warm air mass upwards, where it cools and condenses.

This creates clouds, which can lead to precipitation.

3) The boundary between the two air masses is called a front.

In a cold front, the front is the leading edge of the cold air mass.

4) The cold air behind the front is usually drier and colder than the air ahead of the front.

This can cause a sudden drop in temperature and a change in wind direction, which can result in severe weather conditions such as thunderstorms, strong winds, and even tornadoes.

5) Warm fronts, on the other hand, occur when a warm air mass moves into and replaces a colder air mass.

This typically happens when a low-pressure system moves in, drawing warm air from surrounding areas towards an area of lower pressure.

6) As the warm air mass moves forward, it rises over the colder air mass, where it cools and condenses.

This also creates clouds, which can lead to precipitation.

7) The boundary between the two air masses is again called a front, but in a warm front, the front is the leading edge of the warm air mass.

8) The warm air mass is usually more humid than the air ahead of the front.

This can cause a rise in temperature and a change in wind direction, which can result in milder weather conditions such as light rain, drizzle, or even fog.

By observing the characteristics of a front and the air masses behind it, meteorologists can make predictions about future weather patterns, which helps people prepare for potential weather hazards.

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The wavelength of the radio broadcast is 2.93 meters. The photon energy of the radio broadcast is 6.79 x  \(10^{26}\) joules.

The wavelength of the radio broadcast can be calculated using the formula:

wavelength = speed of light / frequency

The speed of light in a vacuum is approximately 3.00 x \(10^8\) meters per second. We need to convert the frequency from megahertz (MHz) to hertz (Hz):

102.3 MHz = 102.3 x \(10^6\) Hz

Plugging in the values, we get:

wavelength = (3.00 x \(10^8\)m/s) / (102.3 x \(10^6\) Hz)

wavelength = 2.93 meters

Therefore, the wavelength of the radio broadcast is 2.93 meters.

b. The photon energy of the radio broadcast can be calculated using the formula:

energy = Planck's constant x frequency

Planck's constant is approximately 6.63 x \(10^{34}\) joule-seconds. Again, we need to convert the frequency from megahertz to hertz:

102.3 MHz = 102.3 x \(10^6\) Hz

Plugging in the values, we get:

energy = (6.63 x \(10^{34}\) J·s) x (102.3 x \(10^6\) Hz)

energy = 6.79 x \(10^{26}\) joules

Therefore, the photon energy of the radio broadcast is 6.79 x \(10^{26}\)joules.

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This process would power the Sun for only about 25 million years, but geologists already had evidence the Earth was much older than that.

gravity, additionally called gravitation, in mechanics, the frequent force of appeal performing among all be counted. it's far by way of far the weakest recognized force in nature and for this reason, plays no position in figuring out the inner houses of everyday matter.

The gravitational attraction among the authentic gaseous matter inside the Universe allowed it to coalesce and form stars which finally condensed into galaxies, so gravity is liable for some of the huge-scale structures in the Universe. Gravity has a countless range, although its outcomes become weaker as items get farther away. Gravity is maximum accurately described by way of the overall concept of relativity (proposed by way of Albert Einstein in 1915), which describes gravity now not as a pressure, but as the curvature of spacetime, because of the uneven distribution of mass, and causing loads to transport alongside geodesic strains. the character and mechanism of gravity became explored by way of a wide variety of historical scholars.

In Greece, Aristotle believed that objects fell closer to the Earth due to the fact the Earth turned into the center of the Universe and attracted all of the mass in the Universe in that direction of it. He additionally idea that the velocity of a falling item must boom with its weight, an end which was later shown to be false. while Aristotle's view become extensively conventional throughout historical Greece, there have been other thinkers which include Plutarch who efficaciously expected that the appeal of gravity was not specific to the Earth.

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The spring constant is 4900N/m

We are given that,

The mass of the ceiling = m = 0.75kg

The total length of the spring = x = 0.65cm - 0.50cm = 0.15cm

Therefore , to get the value of the spring constant (k) by applying Hook's law that can be given as,

F = kx

Where, F is the total force on the spring , k is the spring constant and x is the length of the spring.

Since , to get the F i.e. force of the spring by Newton's second law of motion, for mass m and acceleration due to gravity is g i.e. 9.8m/s²

F = mg

F = 0.75kg × 9.8m/s²

F = 7.35 N

Then, the spring constant is given as,

k = F/x

k = (7.35N)/(0.0015m)

k = 4900N/m

Therefore, the spring constant may be given as 4900N/m

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Answer:

yes

Explanation:

banked curve :

is a road that looks like the top part of a race track

its looks elevated

often seen in bicycle race track (velodrome)

Banking the curve can help keep cars from skidding. When the curve is banked, the centripetal force can be supplied by the horizontal component of the normal force.

sfuca

Given function isv(t) = t³ +13t²+47t-35and time interval is 1≤t≤7. We have to calculate:

(a) Displacement

(b) Total Distance

(a) Displacement:

Displacement is defined as the shortest distance between initial and final points. We can find the displacement of a particle with the help of following formula:

Displacement = Final Position - Initial PositionHere, the particle moves along a straight line, and we don't know the initial and final position.  Thus, the displacement of the particle is 219 ft.(b) Total Distance:Total distance traveled by the particle is the sum of all the distances covered by it in different intervals.

Thus, we have two real roots of the given equation:t₁

≈ - 6.548t₂

≈ 0.215

Therefore, ∫|v(t)|dt = 309

As we have to find the total distance, we have to add both the cases. Therefore,

Total Distance =∫|v(t)|dt  [from 1 to 7]

=∫|v(t)|dt [from 1 to 7]

=∫|v(t)|dt (from 1 to 1.215) +|v(t)|dt (from 1.215 to 7) = 252 + 309= 561 ft Thus, the total distance traveled by the particle is 561 feet.

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The correct answer is option C. Chemical.

A chemical reaction is a process in which chemical bonds between atoms are broken and reformed, resulting in the creation of new substances with different properties from the original ones. During a chemical reaction, the atoms of the reactant molecules rearrange themselves to form new products, which can have different physical and chemical properties than the original substances.

Chemical reactions can be classified into different types based on the nature of the reactants and the products formed. For instance, a synthesis reaction is a type of chemical reaction in which two or more substances combine to form a more complex compound, while a decomposition reaction is a reaction in which a compound is broken down into simpler substances.

Chemical reactions are fundamental to many natural and industrial processes, from the production of fuels and materials to the metabolism of living organisms. Understanding the mechanisms and properties of chemical reactions is crucial for many fields of science, including chemistry, biochemistry, and materials science.

In conclusion, a chemical reaction is a process in which substances change to other substances as chemical bonds break and reform. It is a fundamental concept in chemistry and has important applications in many scientific and industrial fields.

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The kinetic energy of another body having three times the mass of the given object will be 108 J

Kinetic energy-In physics, the kinetic energy of an object is the energy  it has due to  motion. It is defined as the work required to accelerate a body from a given mass from rest to a specified speed.

The kinetic energy of a body is given by \(K.E= \frac{1}{2}Mv^{2}\) (first equation)

Given K.E= 36J

Now the mass of second body is m=3M

also the second body is moving with the same speed v

So kinetic energy of second body K.E₂= \(\frac{1}{2}mv^{2} =\frac{1}{2}(3M)v^{2}\)=36×3

=108J (from first equation)

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Velocity is the description of an object's motion from one point to another.

It tells the speed with which the trip is completed, and the direction from the start-point to the end-point.  It tells nothing about any twists, turns, loops, bends, or stops along the way.

Big data is sometimes described as having three "v's": volume, variety, and velocity. Option 2 is Correct.

Volume, velocity, and variety—also known as the "three Vs"—are crucial to comprehending how big data may be measured and how unlike it is from traditional data.

Learn more about the three pillars of big data at Big Data LDN, the UK's premier data conference and expo for your complete data team.  Volume, Velocity, Variety, and Veracity are often the four qualities that a dataset must possess in order to be considered big data. Big data must also meet a fifth need, known as value, in order to be helpful to an organisation. Option 2 is Correct.

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Correct Question:

The three 'v's' commonly associated with big data include: Group of answer choices

1. viewable, volume, and variety.

2. volume, variety, and velocity.

3. verified, variety, and velocity.

4. vigilant, viewable, and verified.

Answer:

more

Explanation:

the higher the density the more closely/tighter the particles in the object will be

Answer:

A) El componente de aceleración de la aguja en \(t = 0\,s\) es -236,206 centímetros por segundo al cuadrado.

B) Las ecuaciones para la componentes de posición, velocidad y aceleración de la punta en función del tiempo son, respectivamente:

\(x(t) = 1,458\cdot \cos (15,708\cdot t +0,228\pi)\)

\(v(t) = -22,902\cdot \sin (15,708\cdot t + 0,228\pi)\)

\(a(t) = -359,749\cdot \sin (15,708\cdot t + 0,228\pi)\)

Explanation:

El movimiento armónico simple es un movimiento periódico de carácter sinusoidal que está descrito por la siguiente ecuación cinemática:

\(x(t) = A\cdot \cos (\omega\cdot t + \phi )\) (1)

Donde:

\(x(t)\) - Posición actual de la aguja con respecto a la posición de equilibrio, en centímetros.

\(A\) - Amplitud, en centímetros.

\(\omega\) - Frecuencia angular, en radianes por segundo.

\(\phi\) - Ángulo de fase, en radianes.

Por Cálculo Diferencial, obtenemos las fórmulas cinemáticas para la velocidad (\(v(t)\)), en metros por segundo, y la aceleración (\(a(t)\)), en metros por segundo cuadrado, de la aguja:

\(v(t) = -\omega\cdot A \cdot \sin (\omega\cdot t + \phi)\) (2)

\(a(t) = -\omega^{2}\cdot A \cdot \cos (\omega\cdot t + \phi)\) (3)

Por otra parte, la frecuencia angular está descrita por la siguiente fórmula:

\(\omega = 2\pi\cdot f\) (4)

Donde \(f\) es la frecuencia, en hertz.

Ahora, necesitamos calcular la amplitud y el ángulo de fase mediante el sistema de ecuaciones que hemos formado: \(t = 0\,s\), \(x(t) = 1,1\,cm\), \(v(t) = -15\,\frac{cm}{s}\) and \(f = 2,5\,hz\):

Por (4):

\(\omega = 2\pi\cdot f\)

\(\omega = 2\pi\cdot (2,5\,hz)\)

\(\omega \approx 15,708\,\frac{rad}{s}\)

Por (1) y (2):

\(A\cdot \cos \phi = 1,1\) (1b)

\(-15,708\cdot A \cdot \sin \phi = -15\) (2b)

Al dividir (2b) por (1b) y despejar el ángulo de fase tenemos que:

\(-15,708\cdot \tan \phi = -13,636\)

\(\tan \phi = 0,868\)

\(\phi = \tan^{-1} 0.868\)

\(\phi \approx 0,228\pi\,rad\)

Por (1) tenemos el valor de la amplitud: (\(\phi \approx 0,228\pi\,rad\))

\(A = \frac{1,1}{\cos \phi}\)

\(A = \frac{1,1}{\cos 0,228\pi}\)

\(A \approx 1,458\,cm\)

A) El componente de aceleración de la aguja se calcula por (3) evaluada en \(t = 0\,s\):

\(a(t) = -359,749\cdot \sin (15,708\cdot t + 0,228\pi)\)

\(a(0) = -236,206\,\frac{cm}{s^{2}}\)

B) Las ecuaciones para la componentes de posición, velocidad y aceleración de la punta en función del tiempo son, respectivamente:

\(x(t) = 1,458\cdot \cos (15,708\cdot t +0,228\pi)\)

\(v(t) = -22,902\cdot \sin (15,708\cdot t + 0,228\pi)\)

\(a(t) = -359,749\cdot \sin (15,708\cdot t + 0,228\pi)\)

The skater does indeed reach the same height on either side of the track With friction turned on.

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Answer:

A

Explanation:

THAT is th equation for Potential Energy