Some chemical reactions release energy. Others store energy. What important chemical reaction stores energy?

Answer:

84.1 m

Explanation:

Δx = stopping distance = Vot + 1/2at²

find a (acceleration first):

a = ΔV/t = (0 - 26.5 m/s)/4.85 s = 5.46 m/s²

Δx = (26.5 m/s)(0.75s) + (1/2)(5.46 m/s²)(4.85 s)²

Δx = 19.9 m + 64.2 m = 84.1 m

You will hit the car!  During the 0.75 s reaction time, you've already gone 19.9 m, then you need another 64.2 m to come to a complete stop.

If we assume the same efficiency, then we can use Amdahl's Law to calculate the new runtime on 16 cores.

Amdahl's Law states that the speedup of a parallel program is limited by the portion of the program that must be executed sequentially. In this case, the portion that must be executed sequentially is (80-20)/80 = 0.75 or 75%. This means that only 25% of the program can be parallelized. Therefore, the speedup we can expect from doubling the number of cores is limited to 1/((1-0.25) + 0.25/8) = 1.85.
Using this speedup, we can calculate the new runtime on 16 cores as 20/1.85 = 10.81 seconds.

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When a light ray is hit into a flat mirror the angle of incidence is equal to angle of reflection. But if the mirror is curved, this relation is not satisfied and the angle of reflection changes.

When a light ray is hot on a mirror a line that is perpendicular to the mirror's surface can be drawn at the point of incidence where the ray contacts the mirror.

A typical line is what this line is. The angle formed by the incident and reflected rays is split into two equal angles by the normal line. The angle of incidence is the angle formed by the incident beam and the normal. The angle of reflection is the angle formed by the reflected beam and the normal.

According to the law of reflection, the angle of incidence and the angle of reflection are identical whenever a light beam reflects off a surface. However, for a curved mirror these two angles will be different.

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The current through the solenoid is 87.69 A.

The current through the solenoid required to produce the uniform magnetic field can be calculated using a formula that combines the parameters of the solenoid and the frequency. The formula is I = sqrt(2πfσL), where I is the current, f is the frequency, σ is the electrical resistivity, and L is the length of the solenoid.

In this case, if we assume the resistivity of the wire is constant, the current can be calculated as I = sqrt(2π x 700 x 10⁶ x 2500 / 40). This gives the current through the solenoid as I = 87.69 A.

The current is necessary in order to generate the necessary magnetic field. It accomplishes this by creating a magnetic field through the turns of the solenoid coil which, when energized, produces a uniform magnetic field. This uniform magnetic field is then used to create conditions for the electrons to undergo cyclotron motion.

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Answer:

Q

Explanation:

To know which symbol defines the wavelength, we must know the definition of wavelength.

Wavelength can be defined as the distance between two successive crests (i.e the highest part) or troughs (the lowest part) of a wave.

Considering the diagram given above, Q shows the distance between two successive crests (i.e the highest part) of the wave. Therefore, Q is the wavelength of the wave given in the diagram above.

The method of heat transfer which the students are studying is thermal energy. Thus, the correct option is D.

Thermal energy is a type of energy which is contained within a system in the universe which is responsible for temperature rise. This heat is a type of thermal energy. It is related to the first law of thermodynamics.

Thermal energy arises from the frictional force. It includes the internal energy or enthalpy of a body of matter and radiations. It is related to the internal energy and heat. It arises when a substance whose molecules or atoms are vibrating at a faster speed.

Therefore, the correct option is D.

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Your question is incomplete, most probably the complete question is:

A group of students studied heat transfer by placing a hot block of metal into a Styrofoam cup of room temperature water what method of heat transfer with the student studying

A. Radiation

B. Convection

C. Conduction

D. Thermal energy

The total translational kinetic energy is directly proportional to the temperature of gas. The higher the temperature, the greater the total translational kinetic energy of all molecules in an ideal gas.

In an ideal gas, the translational kinetic energy can be counted by the following equation.

E = 3/2 kT

Where

That is the energy per particle. If there are N particles of gases, the formula would be:

E = 3/2 NkT

Where

Thus, the total translational kinetic energy of all molecules in an ideal gas can be counted by the formula E = 3/2 NkT. It means that the kinetic energy is directly proportional to the temperature of gas.

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It takes .714 m to reach its maximum height.

The VERTICAL component is all we are interested in for this

Vertical velocity = 6.32 m/s   sin 36.3° = 3.742 m/s

Vertical displacement =   vo t - 1/2 at^2

                                     = -1/2 at^2 + vo t  

max occurs at - b/2a = -3.742/ (2(-1/2(9.81)) = .3814 sec

then vot-1/2 at^2 = 3.742 (.3814) - 1/2) (.3814^2) = .714 m

Vertical velocity: Vertical velocity of an object is its speed and direction on the vertical plane.

Vertical displacement: Vertical displacement is distance moved in a vertical direction.

Therefore, a frog that leaps from ground at 6.32 m/s at an angle of 36.3, it takes .714 m long to reach its maximum height.

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Answer:

yes

Explanation:

To determine the activation energy, more information is needed. The rate of reaction doubling with every 10-degree rise in temperature is a characteristic of reactions that follow the Arrhenius equation.

The Arrhenius equation describes the relationship between the rate of a reaction and temperature, given by the equation k = Ae^(-Ea/RT), where k is the rate constant, A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature in Kelvin.

If a reaction doubles its rate with every 10-degree rise in temperature, it indicates that the exponential factor e^(-Ea/RT) becomes 2. Taking the natural logarithm of both sides, we have ln(2) = -Ea/RT.

However, without knowing the specific temperature or the rate constant at a particular temperature, it is not possible to determine the exact value of the activation energy (Ea). Additional data, such as rate constants at different temperatures, would be needed to calculate the activation energy using the Arrhenius equation.

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The potential to difference across each capacitor assuming the two capacitors are in parallel are;

The charge on each capacitor assuming the two capacitors are in parallel are:

C) The potential difference, p.d for the capacitors connected in series are inversely proportional to the capacitance and are as follows;

D) When the connection is parallel, the charge on each capacitor is shared as follows;

First, Total charge, Q = C(total) × V.

where, C(total) = (0.5×1.4)/(1.9) = 0.37-μF.

Q = 2.22C

Hence, the charge is shared as follows;

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Answer:

Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.

Explanation:

Answer:

In a chemical reaction, the products are the substance present after the reaction.

Explanation:

The slope of a line is also referred to as the gradient and it is the number which describes both the direction and the steepness of the line.

This type of formula is used to calculate how steep a line is and is usually denoted as m. The formula can be seen below:

m = y2-y1 / x2-x1

Slope can be defined as the ratio of the vertical change between two points to the horizontal change between two points and measures the steepness of a line.

The chosen answers provided are therefore the most appropriate in this context.

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Answer:

d = 100 m

Explanation:

Given that,

Initial speed of a car, u = 10 m/s

Final speed of a car, v = 40 m/s

Time, t = 4 seconds

We need to find how far does it travel during that time. Let the car travel d distance. We can find it using third equation of motion as follows :

\(v^2-u^2=2ad\) ...(1)

a is acceleration and d is the distance

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{40-10}{4}\\\\a=7.5\ m/s^2\)

So, equation (1) becomes,

\(d=\dfrac{v^2-u^2}{2a}\\\\d=\dfrac{(40)^2-(10)^2}{2\times 7.5}\\\\d=100\ m\)

So, it will travel 100 m during that time.

The energy required to move the satellite into a circular orbit with an altitude of 199 km is 3.45 x 10^8 J.

The energy required to move the satellite into a circular orbit with an altitude of 199 km can be calculated by using the following equation:

ΔE = GMm[(2/r1) - (1/r2)]

Where ΔE is the change in energy, G is the gravitational constant, M is the mass of the Earth, m is the mass of the satellite, r1 is the initial distance of the satellite from the center of the Earth, and r2 is the final distance of the satellite from the center of the Earth.

First, we need to convert the altitude into the distance from the center of the Earth:

r1 = 6,711 km + 110 km = 6,821 km

r2 = 6,711 km + 199 km = 6,910 km

Plugging in the values, we get:

ΔE = (6.67 x 10^-11 Nm^2/kg^2) x (5.97 x 10^24 kg) x (977 kg) x [(2/6,821,000 m) - (1/6,910,000 m)]

ΔE = 3.45 x 10^8 J

Therefore, the energy required to move the satellite into a circular orbit with an altitude of 199 km is 3.45 x 10^8 J.

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Answer:

3.141592653 im  king of NYC

Explanation:

A butterfly flutters at a rate of 18 feet per minute. This is an example of speed .

Speed is defined as. The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered.

In the above question " A butterfly flutters at a rate of 18 feet per minute " , it can be observed that there is a magnitude as well as unit .

here , the magnitude is 18 and the unit is feet per minute , which is a unit of speed as the SI unit of speed is m/s .

hence , this is an example of speed as speed is been measured by this unit .

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The resulting velocity of the 500-g cart is 0 m/s. The resulting velocity of the 1000-g cart is 1 m/s.

C. When describing motion, a frame of reference is a system of reference points used to determine position and velocities of objects.

A frame of reference is an arbitrary set of axes with reference to which the position or motion of something is described or physical laws are formulated.

Frame of reference serves a valuable purpose, because it enables us to make more accurate measurement of our position, displacement, velocity and the total distance traveled.

Also, a frame of reference consists of an abstract coordinate system and the set of physical reference points that uniquely fix the coordinate system and take measurements within that frame.

In other words, it is a system or base, on which motion of an object is determined.

Thus, when describing motion, a frame of reference is a system of reference points used to determine position and velocities of objects.

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Answer:

I believe that it's True.

Answer:Argon

Neon

Helium

Krypton

Xenon

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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True, An ideal standard represents the perfect scenario where the process is 100% efficient and there is no loss or waste of direct material.

It serves as a benchmark for comparison and helps in identifying areas of improvement. However, achieving this standard may not always be possible due to various factors such as machine breakdowns, human errors, and external factors beyond control.
                       the statement "An ideal standard is the quantity of direct material required if a process is 100% efficient without any loss or waste" is true or false.
                                The statement is True. An ideal standard represents the best possible level of efficiency, meaning that there would be no waste or loss of direct materials in the process.

                                      An ideal standard represents the perfect scenario where the process is 100% efficient and there is no loss or waste of direct material.

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The properties of stars are:  mass, age, distance, metallicity (chemical composition), variability and motion through space.

An astronomical object known as a star is made up of a bright plasma spheroid that is held together by gravity. The Sun is the star that is closest to Earth.

Other stars are also visible at night with the unaided eye, but because to their great distances from Earth, they appear as stationary points of light. Many of the brightest stars have names, and the most notable stars have been grouped into constellations and asterisms.

Star catalogues have been put out by astronomers that list the known stars and offer standardized stellar labels.

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Answer: Stars produce energy through nuclear fusion.

Stars are massive objects composed of gas.

Stars are composed primarily of hydrogen and helium.

P.S can I get the brainiest?

A negatively charged object is one that has more electrons than protons.

A negative charge is present when an object has more electrons than protons. An atom has a positive charge when there are more protons than electrons in it. The charges of protons are positive while those of electrons are negative. The coulomb is used to measure charge (C).

The opposite of a charge's attraction is the opposite of its repellency. Therefore, a positive charge attracts a negative charge, whereas two negative charges repel one another. Along the boundary between the two charges, attraction or repulsion occurs.

Along the line that connects the centres of the two objects, the force is applied in that direction. Coulomb's law results in a negative value if the two charges have opposing signs. As a result, the force separating the particles is an attractive force.Coulomb's law produces a favourable outcome if the two charges have the same signs.

Therefore, the answer is 12.4 c positive.

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Two objects with negative charges of 6.2 nC (Coulomb) each are separated by 0.3 m. the size and direction of the force between the two charges is 3.8387038*10^12 N and toward left.

Solution:

Given :

Two objects with negative charges of 6.2 nC (nano coulomb ) each.

Separation= 0.3 m.

We will use the following Coulomb’s Law.

F = k*|q1| |q2|/r2             ∵ where k = 8.9876 × 109 N·m2

Putting the values, we get

F = 8.9876 × 109*|6.2| |6.2|/0.3^2

F=3.8387038*10^12 N

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Answer: Different types of fuels have varying compositions and release different amounts of pollutants when burned. Here are some common types of fuels and the pollutants associated with them:

Fossil Fuels:

a. Coal: When burned, coal releases pollutants such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM).

b. Petroleum (Oil): Burning petroleum-based fuels like gasoline and diesel produces CO2, SO2, NOx, volatile organic compounds (VOCs), and PM.

Natural Gas:

Natural gas, which primarily consists of methane (CH4), is considered a cleaner-burning fuel compared to coal and oil. It releases lower amounts of CO2, SO2, NOx, VOCs, and PM.

Biofuels:

Biofuels are derived from renewable sources such as plants and agricultural waste. Their environmental impact depends on the specific type of biofuel. For example:

a. Ethanol: Produced from crops like corn or sugarcane, burning ethanol emits CO2 but generally releases fewer pollutants than fossil fuels.

b. Biodiesel: Made from vegetable oils or animal fats, biodiesel produces lower levels of CO2, SO2, and PM compared to petroleum-based diesel.

Renewable Energy Sources:

Renewable energy sources like solar, wind, and hydropower do not produce pollutants during electricity generation. However, the manufacturing, installation, and maintenance of renewable energy infrastructure can have environmental impacts.

It's important to note that the environmental impact of a fuel also depends on factors such as combustion technology, fuel efficiency, and emission control measures. Additionally, advancements in clean technologies and the use of emission controls can help mitigate the environmental impact of burning fuels.

Mass of to object is 3 kg and 2 kg.

What is Gravitational force?

In mechanics, gravity, often known as gravitation, is the universal force of attraction that acts between all matter. It is by far the weakest known natural force and so has no effect on the internal properties of ordinary stuff. Due to its long reach and ubiquitous action, it influences the trajectories of bodies in the solar system and elsewhere in the universe, as well as the architecture and evolution of stars, galaxies, and the entire cosmos. The weight, or downward force of gravity, exerted by the Earth's mass on all bodies on Earth is proportional to their mass. The acceleration that freely falling objects experience is used to calculate gravity.

F =G(m1m2/r2)

m1m2 = [(1.00 X 10-8N)(20*10-2m)2]

/[6.67*10-11Nm2/kg2]

Now

m1-m2 =[(m1+m2)2-4m1m2] =[(5kg)2-4(6kg2)] =(1kg2) = 1kg 2m1 =

(m1+m2)+(m1-m2) = 5kg + 1kg =6kg

m1 = 3kg, m2 = 5kg,

and

m2 = 5kg - 3kg = 2kg

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Answer:

20100s

Explanation: