a certain reaction has an enthalpy of δ=34 kj and an activation energy of a=66 kj. what is the activation energy of the reverse reaction?

As a roller coaster car crosses the top of a 60-m-diameter loop-the-loop, its apparent weight is the same as its true weight. The car's speed at the top will be 24.25 m/s

Any object moving in a circle (or along a circular path) experiences a centripetal force. That is, there is some physical force pushing or pulling the object towards the center of the circle. This is the centripetal force requirement.

diameter = 60 m

weight + normal = m\(v^{2}\)/r

m = mass

v = velocity

r= radius

since , apparent weight is the same as its true weight

2W = m\(v^{2}\)/r

2 * m * g = m\(v^{2}\)/r

v = \(\sqrt{2gr}\)

v = \(\sqrt{2 * 9.8 * 30}\) = 24.25 m/s

The car's speed at the top will be 24.25 m/s

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Answer: They are all easy to perform as they are bodyweight exercises.

Explanation:

no difficult exercise so NA. Yes I was plenty of online video to watch to address issues

This technique is often used in forensic science to identify inks used in forged documents or other types of evidence.

One method to separate a mixture of colored inks is chromatography. Chromatography is a physical separation technique used to separate mixtures based on their molecular properties. In the case of colored inks, paper chromatography is a commonly used technique.

In paper chromatography, a small amount of the ink mixture is spotted onto a piece of chromatography paper, and the paper is placed in a container with a small amount of solvent (e.g. water, alcohol, or acetone). The solvent moves up the paper by capillary action, carrying the ink mixture with it. As the solvent moves up the paper, different components of the ink mixture are separated and are visible as colored bands.

The separation occurs because different components of the mixture have different affinities for the paper and the solvent. Components that are more soluble in the solvent will move up the paper more quickly, while those that are more attracted to the paper will move up more slowly. This results in a separation of the components based on their physical and chemical properties.

By comparing the separated bands of the ink mixture to those of known pure inks, the identity of each component in the mixture can be determined. This technique is often used in forensic science to identify inks used in forged documents or other types of evidence.

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A likely method to separate a mixture of colored inks is through chromatography, a technique used to separate components of a mixture. It separates the ink into its constituent colors by allowing a solvent to travel up a stationary phase like paper, carrying the ink mixture with it.

A method that would likely be used to separate a mixture of colored inks is chromatography. Chromatography is a method used in chemistry to separate components of a mixture. It works by using a stationary phase and a mobile phase. In the case of ink separation, the ink mixture would be placed on a stationary phase (like paper), and a solvent (the mobile phase) would be allowed to travel up the paper. As the solvent travels, it moves the mixture along its path. Each component of the ink by their size, chemical properties, and interaction with the solvent and paper will move at different rates, thereby separating the ink into its constituent colors. This method is particularly useful in analyzing the chemical composition of inks and other similar mixtures.

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You find a brand-new galaxy cluster, and its brightest member has an infrared colour ratio of 0.65. According to the graph's statistics, this new cluster will be roughly 1 billion light-years away.

The intra cluster medium is one of the essential characteristics of clusters (ICM). The peak temperature of the ICM, which is dependent on the total mass of the cluster and is made up of hot gas between the galaxies, ranges from 2 to 15 keV.

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The distance covered by the object traveling with a speed of 60 m/s is 150 m.

Distance is the total length between two points.

To calculate the distance covered before the object comes to rest, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1 and solve for s

Hence, the distance covered by the object is 150 m.

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Answer:

D

Explanation:

An aluminium atom in gaseous form has an ionization energy of 577,1820,2740. Ionization energy is the lowest energy that an electron in a gaseous atom can have, to put it in more technical terms.

Ion must absorb in order to escape the nucleus's pull. By determining the lowest energy of light quanta (photons) or electrons accelerated to a certain energy that will liberate the least bound atomic electrons, or Ei, the ionization energy of atoms is calculated. On a single atom, the measurement is made in the gas phase.

The tiniest component of ordinary matter, an atom, makes up a chemical element. Neutral or ionized atoms make up every solid, liquid, gas, and plasma. Atoms typically have a diameter of 100 picometers or less.

Al(13) = \(1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{1}\)

Al (g) ⇒ Al^+ (g) + e-(1st I.S = 577kj/mol)

Al(g)^+ ⇒Al^2+(g)+ e-( 1820 kj/mole)

Al(g)^2+ ⇒Al^3+(g)+ e-( 2740 kj/mole)

The process for the first ionization energy require the leanest amount of energy.

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The role of the Alberta Energy Regulator that is NOT correct is: c. To apply environmental criteria to pipelines that cross Alberta borders, either interprovincially or internationally. Therefore, the option that is not a role of the Alberta Energy Regulator is c.

The Alberta Energy Regulator (AER) is the agency responsible for overseeing the development and production of energy resources in Alberta. This agency is accountable to the provincial legislature through the Minister of Energy.Among its responsibilities, the Alberta Energy Regulator performs the following roles:To act as an appeal tribunal for energy facility environmental approvals.

To apply environmental criteria to pipelines that lie within Alberta and need regulatory approval.The Alberta Energy Regulator is responsible for monitoring and regulating oil and gas activity, and for enforcing rules and regulations related to public safety, environmental protection, and resource conservation.  To apply environmental criteria to pipelines that cross Alberta borders, either interprovincially or internationally.

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Resistance is a fundamental concept related to the flow of electric current in a conductor. It refers to the measure of opposition encountered by the current as it passes through a material. The resistance of an electric heater is 20 ohms. It is being operated at 240 v.

Using Ohm's law, the current flowing in the heater can be calculated as follows

: I = V/R, where I is the current, V is the voltage and R is the resistance.

Substituting the given values we have, I = 240 V / 20 ohms= 12 Amps.

Therefore, the current in a 20-ohm electric heater operated at 240 V is 12 Amps.

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The vectors are said to be equal if they have same magnitude as well as same direction.

In case of C and G,

The direction of both the vectors are same but the magnitude of G is more than C.

Thus, C and G are not equal vectors.

In case of E and D,

Both the vectors have opposite direction to each other and the magnitude of D is more than E.

Thus, E and D are not equal vectors.

In case of B and C,

Both the vectors have same direction but the magnitude of C is more than the magnitude of B.

Thus, B and C are not equal vectors.

In case of A and H,

Both the vectors have same direction and both the vectors cover three boxes, thus, the magnitude of the vectors is same.

Hence, A and H are equal vectors.

The final momentum of the skater is 3.77 m/s.

Momentum is the product of mass and acceleration. Recall that the principle of conservation of linear momentum states that total momentum before collision must equal the total momentum after collision.

Thus;

(50 Kg × 0 m/s) + (55Kg ×  7.2m/s) = (50 Kg + 55Kg) v

v =  (55Kg ×  7.2m/s)/(50 Kg + 55Kg)

v = 396/105

v = 3.77 m/s

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To be effective, there must be must agreement aimed at preventing or reducing ozone depletion by the international government and the various international organizations.

It can be defined as the origination of the contaminant substance that poisonous or harmful to our natural environment.

The Montreal Protocol is an international agreement that was established to safeguard the earth's atmosphere by gradually banning the manufacturing and use of chemicals that damage the ozone layer (ODS).

Thus, For an agreement between the different international organizations and the international government to be effective, it must be targeted at avoiding or mitigating ozone depletion.

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Answer:

u have to purchase it via online e-commerce platforms

Answer:

what your crazy anong pong common paper

Force equals mass time acceleration. Weight is a force and it can replace force in the equation. The acceleration would be gravity, which is an acceleration.

1.)

Fw (weight) = m (mass) · g (gravity, 9.8 m/s²)

Fw = m * 9.81 m/s²

560N = m · 9.81 m/s²

m ≈ 57.08 kg

2.)

d = 350 meters

t = 65 seconds

velocity = d/t

velocity = 350 meters / 65 seconds

velocity ≈ 5.38 meters/sec

3.)

Force = 35N

Distance = 2 meters

Work = Force · Distance

Work = 35N · 2 meters

Work = 70 J

Explanation:

\(workdone = force \times distance \\ = 500 \times 100 \\ = 50000 \: J\)

ANSWER

Wbottom = Fadhesion

EXPLANATION

The system is formed by the two blocks together. The tension force is holding these two blocks, so the tension force is equal to the total weight of the system - in other words, to the sum of the weights of the blocks.

The adhesion force is the force that is keeping the two blocks stuck together, so it is not an external force, but an internal force of the system. Since the blocks are hanging, the adhesion force must be such that the bottom block doesn't fall off. Hence, the adhesion force is equal to the weight of the bottom block.

The term you are looking for is "chemical battery". Chemical batteries work by converting chemical energy into electrical energy through a series of chemical reactions. These reactions take place within the battery's cells, which are composed of two electrodes and an electrolyte.

When the battery is connected to a circuit, the chemical reactions produce an electrical current that can be used to power devices. Chemical batteries are widely used in many applications, including consumer electronics, electric vehicles, and renewable energy systems. They are a crucial component of our modern technological society, and ongoing research is focused on developing more efficient and sustainable battery technologies to meet growing energy demands.

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Available options are:

A. –4500 N

B. –2500 N

C. 2500 N

D. 4500 N

Answer:

-4500 N

Explanation:

Given that we have F₁ = 3000N? (force of the barge)

the force of the tugboat is F '

To pull the barge, the force of the tugboat must be greater than or equal to the force of the barge.

Hence, according to Newton's third law which states that for every action or force in nature, there is an opposite reaction.

Therefore considering the available option the correct answer is "- 4500N, " this is because it is greater than the force of the barge and it's in opposition to the force exerted.

Answer:

The answer is -4500 N

Explanation:

Answer:

Explanation:

35 up 35 down cancel out.

25 forward minus 10 pulling back, so:

25-10

= 15N Right

Answer:

54 is the correct answer to this question

The type of scale that has all the properties of an interval scale with the additional attribute of representing absolute quantities, characterized by a meaningful absolute zero, is a ratio scale.

The type of scale that has all the properties of an interval scale with the additional attribute of representing absolute quantities, characterized by a meaningful absolute zero is a ratio scale. In a ratio scale, the values not only have an order and equal intervals but also a true, non-arbitrary zero point.

This means that ratios of values are meaningful, and one can meaningfully say that a value is, for example, twice or half of another value. Examples of ratio scales include measurements of weight, length, time, temperature in Kelvin, and counts of discrete objects. Ratio scales provide the most precise and informative type of measurement and are widely used in scientific and statistical analysis.

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To determine the maximum load a square steel bar can hold in tension before breaking, we need to consider the ultimate strength of the material. Given that the ultimate strength of the steel bar is 58 ksi (kips per square inch), we can calculate the maximum load as follows:

Maximum Load = Ultimate Strength x Cross-sectional Area

The cross-sectional area of a square bar can be calculated using the formula: Area = Side Length^2

Let's assume the side length of the square bar is "s" inches.

Cross-sectional Area = s^2

Substituting the values into the formula:

Cross-sectional Area = (s)^2

Maximum Load = Ultimate Strength x Cross-sectional Area

Maximum Load = 58 ksi x (s)^2

The answer cannot be determined without knowing the specific dimensions (side length) of the square bar. Therefore, the correct answer is D. None of the above, as we do not have enough information to calculate the maximum load in tension before breaking.

Regarding the additional statements:

The best way to increase the moment of inertia of a cross-section is to add material at as great a distance from the center as possible.

The formula for calculating maximum internal bending stress in a member is bending moment divided by the section modulus.

An A36 steel bar will yield when bending stresses exceed 36 ksi.

For a horizontal simple span beam loaded with a uniform load, the maximum shear will occur adjacent to the support points.

For a horizontal simple span beam loaded with a uniform load, the maximum moment will occur adjacent to the support points.

These statements are all correct.

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A drill log represents information about the quality of the groundwater rock layers and the presence or absence of water.

A drill log is a record or documentation of the geological information obtained during the process of drilling a well or borehole.

It provides valuable information about the subsurface conditions, including the quality of the groundwater rock layers and the presence or absence of water.

Drill logs typically include details such as the depth at which different rock layers or formations were encountered, the composition and characteristics of the rock layers, and any indications of water presence, such as water levels, flow rates, or water-bearing formations.

By examining a drill log, hydrogeologists and geologists can assess the quality and potential yield of groundwater sources in a particular area.

It helps in understanding the geological formations, stratigraphy, and hydrogeological properties of the subsurface, which are crucial for various applications such as water resource management, well design, and groundwater exploration.

In summary, a drill log provides essential information about the quality of groundwater rock layers and the presence or absence of water, offering valuable insights into the hydrogeological characteristics of a specific location.

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Room heater. The electric current's magnetic action is not the foundation of the space heater. Devices that depend on the magnetic effect of electric current to work include the magnetic crane, , and loudspeaker.

The magnetic crane creates a magnetic field that can lift large things using an electromagnet. The magnetic field produced by the electric bell's usage of an electromagnet forces a metal clapper to strike a bell, emitting a ringing sound. An electromagnet in the loudspeaker causes a diaphragm to vibrate, creating sound waves that can be perceived by the human ear. In contrast, the usual mechanism of a room heater is the use of a resistor or heating element to transform electrical energy into heat energy. After that, the heat is radiated or convected.

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Answer:

Explanation:

Compete question;

A roller coaster has a loop in which the centripetal acceleration equals 9.8m/s² . If the tangential speed of the roller coaster cars is 15.7 m/s, find its radius.

centripetal acceleration a = v²/r

v is the tangential speed

r is the radius

Given

v = 15.7m/s

a = 9.8m/s²

9.8 =  15.7²/r

9.8r = 15.7²

r = 15.7²/9.8

r = 246.49/9.8

r = 25.152m

Hence the radius of the coaster is 25.152m