Which describes the sum of potential energy and kinetic energy of objects or systems? *

a. nuclear energy and electric energy
b. nuclear and mechanical energy
c. thermal energy and electric energy
d. thermal energy and mechanical energy

For the addition of bromine to fumaric acid, the stereoisomer formed in this reaction is meso-form.

In a chemical reaction, meso compounds are racemic and optically inactive compounds. They contain two or more stereogenic centers but are optically inactive due to internal compensation. Meso compounds are optically inactive even if they have a chiral center, as the plane of symmetry bisects the chiral center.

The addition of bromine to fumaric acid requires a high temperature while the other substrates tested reacted at room temperature because bromine is a relatively weak electrophile. This means that it is less able to undergo an addition reaction with the alkene or alkyne at room temperature. In contrast, the other substrates tested had more reactive double or triple bonds that were able to react with the reagent at lower temperatures.

The products expected from the addition of bromine to alkene and alkyne are as follows:
Bromine addition to alkene: A dibromoalkane is formed when bromine is added to an alkene.
Bromine addition to alkyne: A tetrahaloalkene is formed when bromine is added to an alkyne.

The mechanism for the addition of bromine to fumaric acid is as follows:
Step 1: Bromine is polarized by the reaction conditions to form a bromonium ion. This step is highly endothermic, and it is the rate-determining step of the reaction.
Step 2: The bromonium ion adds to one of the double bonds of the fumaric acid, giving a cyclic intermediate.
Step 3: The cyclic intermediate undergoes ring opening, giving a product that contains two bromine atoms on adjacent carbon atoms.
Step 4: The final step involves deprotonation to yield the meso-form.

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i think it goes fall the down winter and then the other seasons

The time taken for the echo to be heard is 4.2 s.

Distance from the canyon wall, d = 721 m

Velocity of sound in air, v = 343 m/s

So, the time taken to reach the wall, t = d/v

t = 721/343

t = 2.1 s

The echo is heard after the reflection of the sound wave.

Therefore, the time taken for the echo to be heard,

t' = 2 x 2.1

t' = 4.2 s

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Answer:

b

Explanation:

if there is a fire there is no time to waist

The answer depends on depends on your age and your capacities:

If you are a child, the correct option is A.

If you are a scientist adult, the correct option is B.

I will assume that you are a child, so you shouldn't be in any danger. In a laboratory, we can find a lot of glass and flammable things, so it is really dangerous to be near a fire.

Then really easily we can conclude that the correct option is A, immediately notify your instructor (who should have the knowledge to handle the situation)

Never try to handle it by yourself, especially never throw water on the fire, as there are a lot of cases (like if some oil starts combusting) where throwing water will make the situation a lot worst.

Now, if you are an adult and you are instructed in how to handle lab hazards, you should know where the nearest fire extinguisher is, then you can run to get it and extinguish the fire before it goes out of control.

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As a cold, dry air mass moves across the lakes, it can pick up moisture and heat from the warm lake waters. This process is called lake-effect and can cause the air mass to become more unstable as it gains warmth and moisture. As the air rises, it can form clouds and precipitation, which can lead to heavy snowfall in areas downwind of the lakes.

When a cold, dry air mass moves across the lakes, it becomes unstable due to the transfer of heat and moisture. The warmer lake water provides heat energy, which increases the temperature of the air mass, and evaporates water into the air, adding moisture.

These combined factors lead to the development of instability in the air mass.

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Answer: C. It includes factual information supported by other sources

Explanation:

:) its really obvious tbh w you

gamertag: itzmamas1k

Answer:

Explanation:

its what he or she said i hope!

Answer:

This question appear incomplete

Explanation:

This question appear incomplete because of the absence of options but when you slam on the brakes when riding a bike or other vehicles, the bike undergoes deceleration. Deceleration is a type of acceleration with a negative value which usually points in the opposite direction of the velocity. As described in the question, deceleration is usually brought about by a decrease in magnitude of a velocity.

Answer:true

Explanation:

The correct solution is "Perform multiple Join recipes instead." It is not possible to join more than two datasets at a time with the Join recipe. Each Join recipe can only join two datasets at a time. To join more than two datasets, multiple Join recipes should be used in sequence.

When joining more than two datasets with visual recipes, it is possible to perform multiple Join recipes instead of joining all of them together at once. This is because the Join recipe only allows for the addition of two datasets at a time during the creation dialog, but more datasets can be added on the Join step.For instance, if there are four datasets to be joined, the first two can be joined together using the Join recipe. Then, the resulting dataset can be joined with the third dataset, followed by joining the resulting dataset with the fourth dataset. This way, all four datasets can be joined together.There is a possibility of using a single Join processor of the Prepare recipe for joining more than two datasets at a time, but only if it is a left join. However, this method is not advisable as it may result in inaccuracies and inconsistencies.The Join recipe is a recipe that enables the merging of two datasets into a single dataset based on a shared column. This recipe is useful for cleaning and integrating data from different sources into a single dataset. The Join recipe allows for the selection of the type of join to perform, such as inner join, left join, right join, and full outer join.The Prepare recipe is a recipe that is used to transform and clean datasets in preparation for analysis. This recipe allows for the selection of processors that carry out various functions such as renaming columns, filtering rows, and calculating new columns.

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To determine the location of the image formed by a converging lens, we can use the lens formula:

1/f = 1/d_o + 1/d_i,

where f is the focal length of the lens, d_o is the object distance, and d_i is the image distance.

Given:

Focal length of the lens (f) = 6.5 cm,

Object distance (d_o) = 28 cm.

We can rearrange the lens formula to solve for the image distance:

1/d_i = 1/f - 1/d_o.

Substituting the given values:

1/d_i = 1/6.5 - 1/28.

To find the value of d_i, we calculate the right-hand side of the equation and then take the reciprocal:

1/d_i = (28 - 6.5) / (6.5 * 28).

1/d_i = 21.5 / 182.

d_i = 182 / 21.5.

d_i ≈ 8.47 cm.

The positive sign indicates that the image is formed on the opposite side of the lens from the object. Therefore, the image is located approximately 8.47 cm in front of the lens.

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Formula of

Line segment

is AB =

\(\sqrt{(x_{2} -x_{1} )^{2} } +\sqrt{(y_{2} -y_{1} )^{2} }\)

Line segment

is a part of line with definite length. It has two ending points whereas a line has no end points and extended infinitely in both the direction. Line which joins both ending points with possible shortest way is known as

Line segment

.

            A ______________________ B    

        (x₁,y₁)                                             (x₂,y₂)      

This line segment can be represented as \(\frac{}{AB} /\frac{}{BA}\). In other word we can say line segment is

subset

of line, so it contains all the points of line lying between both end point of segment. For shorter length it can simply measure by

ruler

. A bar (-) is always on top of its notation {\(\frac{}{AB}\)}.

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Formula of Line segment is AB =  \(\sqrt{(x_{2}-x_{1})^{2} } +\sqrt{(y_{2}-y_{1})^{2} }\)

Line segment

is a part of line with a definite length. It has two ending points whereas a line has no end points and extended infinitely in both the direction. Line which joins both ending points with possible shortest way is known as

Line segment

        A ______________________ B    

       (x₁,y₁)                                             (x₂,y₂)      

This line segment can be represented as\(\overline{AB}/\overline{BA}\) . In other word we can say line segment is subset of line, so it contains all the points of line lying between both end point of segment. For shorter length it can simply measure by ruler A bar (-) is always on top of its notation {\(\overline{AB}/\overline{BA}\)}.

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The magnitude of a vector represents its length or size, regardless of its direction. In the case of a vector with a magnitude of 15 ft/s down, the magnitude is simply 15 ft/s.

The "down" direction indicates the direction of the vector, while the magnitude specifies the length or size of the vector. So, the magnitude of the vector in this case is 15 ft/s.

Answer:

Human-driven changes in arrive utilize and arrive cover such as deforestation, urbanization, and shifts in vegetation designs moreover change the climate, coming about in changes to the reflectivity of the Soil surface (albedo), emanations from burning timberlands, urban warm island impacts and changes within the normal water cycle.

It is D. is none of the other things listed here. The stars of the Milky Way are all near a great circle on the Celestial Sphere. This great circle is called the milky circle

The Milky Circle is a great circle on the celestial sphere that is defined by the stars of the Milky Way. It is visible to the n_aked eye and is one of the most recognizable features of the night sky, stretching across the entire sky from horizon to horizon. It is composed of millions of stars, all of which reside in the same galactic plane and are moving in the same direction around the galactic center. The Milky Circle is a beautiful sight to behold, especially during a clear night, when it appears as a wide band of light. It is a reminder of the vastness of the universe and the beauty of the night sky. It is also a great way to orient oneself in the night sky, as its stars form a familiar pattern that can help one find constellations and other objects.

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Bohr explains that the atom consists of a nucleus which contains protons and neutrons in it and electrons revolve around the nucleus in different orbits. The nucleus is positively charged and electrons revolving around are negatively charges.

According to Bohr's model of atom, there are different number of shells in which electrons revolve. The shells are named as K, L, M, N... According to Bohr's model, K shell which is lowest shell can only have two electrons in its orbit. Therefore, Bohr's model shown in 1. is correct as it has only two electrons in K shell.

The full-load current of a 25-horsepower, 480-volt, 3-phase, squirrel-cage induction motor is  Table 430.250.

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the charge is moving at a speed of 1.43 x 10^3 m/s.

To solve this problem, we can use the equation for the magnetic force on a moving charge:

F = qvB

where F is the force, q is the charge, v is the velocity, and B is the magnetic field.

Rearranging the equation to solve for velocity, we get:

v = F / (qB)

Plugging in the given values, we get:

v = (2.14 x 10^-8 N) / [(2.99 x 10^-6 C) x (5.00 x 10^-5 T)]

Simplifying, we get:

v = 1.43 x 10^3 m/s

Therefore, the charge is moving at a speed of 1.43 x 10^3 m/s.

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Answer:

3×10^6

Explanation:

frequency is the speed of light ( c) which is a constant number divided the wavelength

f = 3×10^6 / 1.0

The number of revolutions per minute which a 25 m diameter ferris wheel would need to make for the passengers to feel weightless is 7.84 rotations per minute.  

The rotational speed of a ferris wheel needs to reach 8.5 revolutions per minute (RPM) for passengers to experience weightlessness. To calculate the RPM of a 25m diameter ferris wheel, use the formula:

RPM = (distance/circumference) × 60.

The circumference of a 25 m ferris wheel is 157.07m. Therefore, the RPM of a 25m ferris wheel would be:

RPM = (25m/157.07m) × 60 = 7.84 RPM

Therefore, a 25m ferris wheel would need to rotate at a rate of 7.84 RPM for passengers to experience weightlessness.

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The statement that is true about the time constant is that the product of the resistance R and the capacitance C is equal to the time constant τ of the charging capacitor.

A time constant describes the rate of change of current or voltage in a circuit. When an RC (resistance-capacitance) circuit is charged, the time constant represents the duration required for the capacitor to charge to 63.2% of its maximum charge potential. It also represents the time required for the capacitor to discharge to 36.8 percent of its maximum potential.

The formula for calculating the time constant of an RC circuit is:τ = RC.

Where R is resistance, and C is capacitance.

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Answer:

velocity

Explanation:

Unbalanced forces on an object cause it to accelerate.  Acceleration is a change in velocity over time.

Answer:

a

Explanation:

none

Answer:

The value is  \(s = 222.01 \ m\)

Explanation:

From the question we are told that

  The  initial  velocity is  \(u = 14.9 \ m/s\)

    The deceleration is  \(a = - 0.5\)

Generally from kinematic equations we have that

     \(v^2 = u^2 + 2as\)

Here v is  0 m/s because the velocity of the ball when at rest is zero so

     \(0^2 = 14.9^2 + 2 (-0.5)s\)

=>    \(s = \frac{222.01}{1}\)

=>    \(s = 222.01 \ m\)

The final equilibrium temperature (in °C) of the system when ice and water vapor are combined can be calculated using the principle of energy conservation and the specific heat capacities of ice and water.

To determine the final temperature, we can apply the equation:

(m₁ * c₁ * ΔT₁) + (m₂ * c₂ * ΔT₂) = 0

Where:

- m₁ is the mass of ice (22.0 kg)

- c₁ is the specific heat capacity of ice (2.09 J/g·°C)

- ΔT₁ is the change in temperature of ice (final temperature - 0.00 °C)

- m₂ is the mass of water vapor (4.80 kg)

- c₂ is the specific heat capacity of water (4.18 J/g·°C)

- ΔT₂ is the change in temperature of water (final temperature - 100.0 °C)

Solving for the final temperature, we find:

(22.0 kg * 2.09 J/g·°C * ΔT₁) + (4.80 kg * 4.18 J/g·°C * ΔT₂) = 0

Substituting the given values, we can solve for ΔT₁ and ΔT₂. Once we have those values, we can find the final temperature by adding ΔT₁ to 0.00 °C.

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Answer:

wind speed

Explanation:

m1v1+m2v2=m1v1'+m2v2'

m(v1+v2)=m(v1'+v2')

v1+v2=v1'+v2'

left=-, right=+

-4.1+3.5=3.5+v2'

v2'=-4.1

this collision elastic

Considering the table the acceleration is 2.72 Km/hr

Acceleration is defined as the rate of change of velocity with respect to time.

This means that if an object's velocity changes by a certain amount over a certain period of time, then the object is said to have experienced acceleration during that time.

The formula is

= Final velocity - initial velocity / time taken

plugging in the values

= (65 - 60) / (11:55 - 10:05)

= 5 / 1:50

converting 50 minutes to hour = 50 / 60

= 5 / 1 50/60

= 2 6/11

= 2.72 Km/hr

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The total energy supplied due to the explosion is 1.20 x 10^9 J

Given

rocket speed at which it is traveling at 5.80 x 10³ m/s concerning  Earth,

Let us consider that assume that  two parts are in opposite directions towards the original line of motion of the rocket.

Consider the speed of each section concerning to Earth given v1 and v2

Therefore, the two sections possess equal mass, we  have to consider they have equal momentum in  opposite directions.

mv1 + mv2 = mv

here

m = mass of each part

v = velocity of each part

Since both sections have equal mass, we can write:

v1 + v2 = v

v = 5.80 x 10³ m/s.

Now,

v1 + v2 = 5.80 x 10³ m/s

the both parts move in a speed of 2.20 x 10³ m/s relative to each other

Therefore,

v1 - v2 = 2.20 x 10³ m/s

After evaluation of the two equations

v1 = (5.80 x 10³ + 2.20 x 10³)/2

= 4.00 x 10³ m/s

v2 = (5.80 x 10³ - 2.20 x 10³)/2

= 1.80 x 10³ m/s

Therefore, the  calculated speed of each part concerning  Earth

v1 = 4.00 x 10³ m/s moves towards the rocket before explosion.

v2 = 1.80 x 10³ m/s moves in the opposite direction from the rocket before explosion.

The second case

In order to evaluate how much energy was provided by the explosion,

The calculated initial kinetic energy of the given rocket is

KEi = (1/2)mv²

here m = mass of the rocket

v = velocity relative to Earth before explosion.

Staging of the values in the formula

KEi = (1/2)(975 kg)(5.80 x 10^3 m/s)²

KEi = 16.8 x 10⁹ J

After  the event of explosion, each part has a kinetic energy as

KEf = (1/2)m(v/2)²

here

m = mass of each section

v = velocity relative to Earth after explosion

Staging of values

KEf = (1/2)(975 kg/2)(4.00 x 10³ m/s)²

KEf = 7.80 x 10⁹  J

The total kinetic energy  calculated after explosion

K Ef total = KEf + KEf

KEf_total = 15.6 x 10⁹  J

Hence,

E explosion = KEi - K Ef total

E explosion = 16.8 x 10⁹  - 15.6 x 10⁹

E explosion = 1.20 x 10^9 J

The total energy supplied due to the explosion is 1.20 x 10^9 J

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Answer:

friction

Explanation:

rubbing stuff together is friction

The maximum mass of coal that the barge will carry in freshwater without sinking is 0.111 kg.

The volume of the barge is calculated as follows;

V = L³

V = (4.8 cm)³

V = 110.6 cm³

For the barge to float in freshwater, its density must be less or equal to density of water.

density(barge) = density(water)

density(barge) = 1 g/cm³

mass = density x volume

mass = 1 g/cm³ x 110.6 cm³

mass = 110.6 g

mass = 0.111 kg

Thus, the maximum mass of coal that the barge will carry in freshwater without sinking is 0.111 kg.

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