What is the energy of each of the two photons produced in proton antiproton annihilation?

Answer:

(This will depend on the type of fuel, I will assume that the fuel is petrol)

First, let's find the expected energy consumption in the US for the next 10 years.

We know that in one year, a person consumes 3.5*10^11 joules.

There are 310,000,00 people on the US

Then the total consumption in one year is:

310,000,000*3.5*10^11 joules = 1.085*10^20 J

In 10 years the consumption is 10 times the consumption of a single year, then the expected energy consumption in the US for the next 10 years is:

10*1.085*10^20 J = 1.085*10^21 J

Now let's find the mass of fuel required.

We know that a liter of petrol has 31,536,000 joules of energy,

And a liter of petrol weights 0.75 kg

To find the number of liters of petrol that we need, we need to find the quotient between the expected energy consumption in the next 10 years and the energy of a single liter of petrol, this is:

N = (1.085*10^20 J)/(31,536,000 j) = 3.44*10^13

We will need  3.44*10^13 liters of petrol.

And the total mass of petrol will be:

M = 3.44*10^13*0.75 kg = 2.58*10^13 kg of fuel.

ANSWER

EXPLANATION

We want to find the weight of a 250-gram box of breakfast cereal in Newton.

To do this, apply the formula for weight:

where m = mass in kilograms

g = acceleration due to gravity

Let us convert 250 grams to kilograms:

Now, let us find the weight:

That is the answer.

Two cars collide head-on and stick together Car A, with a mass of 2000 kg then the mass of Car B is 3000 kg.

The law of conservation of momentum can be used to find the mass of Car B after the collision.

Momentum is a quantity that is conserved in an isolated system in physics.

The law of conservation of momentum states that in a system, the total momentum remains constant unless acted upon by external forces.

The initial momentum of the system is given by the sum of the momentum of Car A and Car B.

Car A has a mass of 2000 kg and is moving to the east at a velocity of 10 m/s, therefore its momentum is: Momentum of Car A = mass of Car A x velocity of Car A= 2000 kg x 10 m/s = 20,000 kg·m/s

Car B is at rest initially, so its momentum is zero.

Therefore, the initial momentum of the system is 20,000 kg·m/s.

To calculate the final momentum of the system, we need to know the mass of Car B.

Let the mass of Car B be represented by m.

The final momentum of the system is the sum of the momentum of Car A and Car B after the collision.

After the collision, the two cars stick together and move at a velocity of 5 m/s to the west.

The momentum of the system after the collision is: Momentum of system after collision = (mass of Car A + mass of Car B) x velocity of the two cars= (2000 kg + m) x (-5 m/s)

The negative sign indicates that the velocity is in the opposite direction to that of Car A, which was moving to the east.

By applying the law of conservation of momentum, we can equate the initial momentum of the system to the final momentum of the system.

That is,20,000 kg·m/s = (2000 kg + m) x (-5 m/s)

Solving for m gives: m = 3000 kg

Therefore, the mass of Car B is 3000 kg.

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The wave is moving at a speed of 446 m/s.

The speed of a wave can be calculated using the formula:

v = λf

where v is the speed of the wave, λ is the wavelength, and f is the frequency.

In this case, the wavelength is 2 m and the frequency is 223 Hz. So, we can substitute these values into the formula:

v = 2 m × 223 Hz

The speed (v) of a wave is the distance it travels per unit time. It is usually measured in meters per second (m/s). Simplifying the expression, we get:

v = 446 m/s

Therefore, the speed of the wave is 446 m/s.

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Answer:

Explanation:

Since we have no friction and we also have no angle of inclination, this is a straightfoward force problem, where

F = ma

Filling in,

F = (115)(7.8) so

F = 9.0 × 10¹ N

Answer:

#6 is 14 miles in 7 mins

Explanation:

you need to get the unit rate (how many miles per min) then multiply from there so you take 10/5 (because there 5 mins) and get 2 miles per min, then you take 2 an multiply it by 7 (because you want to know how far she went in 7 min) and you get 14

Answer:: 14miles in 7 mins

The molecular motion of  the water particles as the burner supplies heat is convection current of heat.

Convection is a single- or multiphase fluid movement that develops on its own as a result of the interaction between a fluid's body forces—most frequently gravity and density—and material property heterogeneity.

It is safe to presume that convection will occur as a result of thermal expansion and buoyancy when the reason of the convection is unknown. Convection may also occur in mixes or soft materials where particles can move.

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Answer:

14.4 m/s²

Explanation:

The acceleration is the variation of speed divided by the time:

72/5 = 14.4 m/s²

The amount of metabolic energy expended by the bird is 39.2 J.

Energy is the ability to perform work in physics. It might exist in several different forms, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred from one body to another. Energy is always assigned based on its type once it has been transmitted. Thus, heat transmitted may appear as thermal energy while labor performed may result in mechanical energy. Motion is a property of all energy types. For instance, if a body is moving, it possesses kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is due of its design, which includes potential energy.

E = mgh = (0.20)*(9.8)*(20) = 39.2 J

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The name given to it is "terminal velocity".

In reality, it isn't a velocity, and it doesn't happen in free-fall.

Go figure.

Energy is transported from the tropics to the polar regions chiefly by ocean and atmospheric currents.

Ocean currents transport thermal energy from the tropics to the polar regions, while atmospheric currents transport latent and sensible heat from the tropics to the polar regions. These transfers occur through different mechanisms that rely on Earth's rotation, wind patterns, and temperature differences. The primary way in which energy is transported from the tropics to the polar regions is through ocean currents, particularly the ocean conveyor belt. This is a system of currents that circulate in the Atlantic Ocean and are driven by differences in temperature and salinity. Warm water from the tropics flows northward, where it cools and sinks, eventually returning southward at depth. This circulation helps to regulate the climate of both the tropics and the poles. Atmospheric currents also play a role in the transport of energy from the tropics to the polar regions. Warm, moist air rises in the tropics and flows poleward at high altitude, where it cools and descends. This creates a circulation pattern known as the Hadley cell, which drives the trade winds and helps to distribute heat around the globe. In the polar regions, cold, dry air descends and flows equatorward at low altitude, completing the circulation pattern.

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Answer:

Brainliest please

Explanation:

I will start by saying that Metals by their very nature are conductors of electricity. Now metals exhibit “metallic bonding” which holds its structure together. Unlike other materials which exhibit covalent bonding, it's atoms are not bonded by “electron sharing”. Rather they are bonded by the availability of valence electrons. Now within a metals atomic structure, the metal atoms lose the electrons in thier outermost shell (valence electrons), thus becoming positively charged ions (cations )

Answer:

Higher launch angles have higher maximum height

Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the maximum height.

Answer:

35N

Explanation:

force=mass×gravity

the mass is 5 and the gravity is 7 therefore:

force=7×5

=35N

I hope this helps

It is a Birch reduction reaction. Here Na gives electron to ortho position of methyl group and localization happen and negative charge takes proton and form radical compound.

When aromatic molecules with benzenoid rings undergo the Birch reduction, they are transformed into 1,4-cyclohexadiene, which has two hydrogen atoms connected at opposite ends of the molecule. This reaction is crucial to synthetic organic chemistry.

Birch reduction is the reaction at hand. Here, Na gives an electron to the ortho position of the methyl group, which causes localization and causes the negative charge to absorb a proton and form a radical compound. Later, Na gives another electron to the radical carbon, which creates a negative charge that absorbs a proton and creates the final product(See Picture - 1).

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The complete question is:

Draw the expected product of the following reaction(See Picture). do not draw out any hydrogens explicitly. do not use any abbreviations such as me or ph.

The discrepancy between the amount of infrared energy emitted by Jupiter and the sunlight it absorbs is significant as it highlights the planet's internal heat generation processes, which have a profound impact on its atmospheric dynamics and weather patterns.

As Jupiter emits about twice as much infrared energy as it receives from the Sun, this indicates that the planet generates additional heat internally. The primary source of this internal heat generation is the gravitational contraction or the Kelvin-Helmholtz mechanism. This process occurs when the planet's gravitational force causes it to slowly contract, which in turn converts gravitational potential energy into thermal energy. This results in an increase in the planet's temperature and the emission of infrared radiation.

Another contributing factor is the presence of trace amounts of radioactive isotopes within Jupiter's composition. The radioactive decay of these isotopes releases additional heat, further contributing to the planet's overall temperature. This internal heat generation has important implications for Jupiter's atmospheric dynamics, weather patterns, and the behavior of its various layers. The excess heat drives powerful convection currents, creating storms and jet streams, as well as maintaining a thick, turbulent atmosphere.

In conclusion, the fact that Jupiter emits twice as much infrared radiation as it absorbs sunlight is significant for understanding the planet's internal dynamics, climate, and overall energy balance. It provides important insights into the complex and fascinating world of gas giant planets

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The order of magnitude is 10^(-12), since in scientific notation we have

0.0000000000004999 = 4.999 x 10^(-12)

(there are 12 zeros between the decimal point and the first non-zero digit)

A decibel is a dimensionless unit to express physical intensity or sound pressure levels.

A decibel is a dimensionless unit to express physical intensity or sound pressure levels. The decibel, in turn, measures the power of the sound, its energy, and the stronger or weaker it is emitted. Measures the volume of the sound.  It is a logarithmic scale that quantifies the relative loudness or softness of a sound compared to a reference level. The decibel scale is based on powers of 10, where an increase of 10 dB represents a tenfold increase in sound intensity. The reference level for the decibel scale varies depending on the context. In the field of acoustics, the commonly used reference level is 0 dB, which corresponds to the threshold of human hearing. Positive decibel values indicate increasing sound levels, while negative values indicate decreasing sound levels or the absence of sound.

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The container of orange juice should be placed 20.4 cm away from the carton of milk.

To balance the basket, the center of mass needs to be at the center of the basket. Let's call the distance between the carton of milk and the center of mass "x", and the distance between the box of cereal and the center of mass "52.0 cm - x".

Using the fact that the basket is balanced, we can write:

(1.91 kg)(x) = (0.772 kg)(52.0 cm - x) + (1.90 kg)(26.0 cm)

Simplifying and solving for x, we get:

x = 20.4 cm

Therefore, the container of orange juice should be placed 20.4 cm away from the carton of milk in order to balance the basket at its center.

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Answer:

The net force is 10 N.

Explanation:

A "net force" occurs when a particular object accelerates. It refers to the total number of forces that act on an object.

The boy pulling the cart and the other pushing it do their actions in the same direction. The force of pulling is 6 N while the force of pushing is 4 N. This means that the total force will not be cancelled.

To get the net force, add both forces since they are in the same direction (east).

Net force = 6 N + 4 N

Net force = 10 N (Newtons)

Answer:

explanations below

Explanation:

From the attached document, it can be seen that Stations 2 and 3 are further away from the epicenter unlike stations 1 and 4. Stations 2 and 3 are likely going to record fewer waves than the others because as the wave travel such distances, part of it are bent by the earth’s interior and some of the materials in earth also reflect some of the waves.

Explanation:

a) Power = work / time = force × distance / time

P = Fd/t

P = (85 kg × 9.8 m/s²) (4.6 m) / (12 s)

P ≈ 319 W

b) P = Fd/t

0.70 (319 W) = (m × 9.8 m/s²) (4.6 m) / (9.6 s)

m = 47.6 kg

The man's power rating while doing the work will be 319 W and the mass of the girl will be 47.6 kg.

Power can be defined as the amount of work completed in a given amount of time. Watt (W), which is derived from joules per second (J/s), is the SI unit of power. Horsepower (hp), which is roughly equivalent to 745.7 watts, is a unit of measurement sometimes used to describe the power of motor vehicles and other devices.

Average power is calculated by dividing the total energy used by the total time required. The average quantity of work completed or energy converted per unit of time is known as average power.

According to the question,

a) Power = work / time

P = (force × distance) / time

P = Fd/t

P = (85 kg × 9.8 m/s²) × 4.6 m / 12 s

P = 319 W

Hence, the power rating while doing the work is 319 W.

b) P = Fd/t

0.70 × 319 W = (m × 9.8 m/s²) × 4.6 m / 9.6 s

m = 47.6 kg

Hence, the mass of the girl is 47.6 kg.

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Label the rows as the electron energy levels:

The rows of the periodic table are also known as periods. There are seven periods, and each period corresponds to a particular energy level. You can label them from 1 to 7, starting from the top row.

Label the number of valence electrons in Columns 1, 2, and 13-18:

Columns 1 and 2 are the s-block elements, and they have 1 and 2 valence electrons, respectively. Columns 13-18 are the p-block elements, and they have 3 to 8 valence electrons, respectively. You can label the number of valence electrons in each column.

Label the metals, semi-metals, and non-metals using different colors:

Metals are on the left side of the periodic table, semi-metals are in the middle, and non-metals are on the right side. You can use different colors to label them without obscuring any of the information about different elements.

Label the ion charges for elements in the first 3 rows:

Elements in the first 3 rows of the periodic table have predictable ion charges. The alkali metals (Group 1) have a charge of +1, the alkaline earth metals (Group 2) have a charge of +2, and the elements in Group 13 have a charge of +3. For Groups 15, 16, and 17, the charges are -3, -2, and -1, respectively. The noble gases (Group 18) are unreactive and do not form ions. You can write these charges for each element in their respective positions.

Label the trends for atomic size, ionization energy, and electron affinity:

Atomic size generally decreases from left to right across a period and increases from top to bottom within a group. Ionization energy generally increases from left to right across a period and increases from bottom to top within a group. Electron affinity generally increases from left to right across a period and becomes less negative from top to bottom within a group. You can label these trends on your periodic table as well.

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The statement " If water is heated, then it will turn to steam" is an example of a conclusion, therefore the correct answer is option B .

Science is the methodical, empirically-based pursuit and application of knowledge and understanding of the natural and social worlds .

A method of learning about the world is science .

Thus, the statement " If water is heated, then it will turn to steam" is an example of a conclusion, therefore the correct answer is option B .

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The vector potential of an infinite solenoid with n turns per unit length, radius R, and current I is given by A = (mu0 * n * I * pi * R^2) * z, where mu0 is the permeability of free space and z is the unit vector along the axis of the solenoid.

An infinite solenoid is a long, cylindrical coil of wire with a large number of closely spaced turns. Due to its symmetry, the magnetic field produced by the solenoid is only in the z-direction and has constant magnitude inside the solenoid. To calculate the vector potential, we use the Biot-Savart law and integrate over the current flowing through each turn of the solenoid. The result is a simple expression for the vector potential that depends only on the number of turns per unit length, the radius of the solenoid, the current, and the permeability of free space.

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Through the process of functional assessment, behavior therapists look to the current environmental events that maintain problem behaviors and help clients produce behavior change by changing environmental events.

Hence, through the process of functional assessment, behavior therapists look to the current environmental events that maintain problem behaviors and help clients produce behavior change by changing environmental events.

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Through which process, behavior therapists look to the current environmental events that maintain problem behaviors and help clients produce behavior change by changing environmental events?

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Answer:

Relativistic velocity is of the order of 1/10th of the velocity of light

Explanation:

We define relativistic speed (or velocity) as a speed that is a significant fraction of the speed of light: c = 3*10^8 m/s

Such that for these speeds, the special relativity theory starts to apply (the relativity effects starts to apply).

Usually, we define relativistic speeds as those that are of the order (or larger) of c/10, which is one-tenth of the speed of light.

Then the correct option is C:

Relativistic velocity is of the order of 1/10th of the velocity of light

Answer:

8

Explanation:

All noble gasses have 8 electrons in their outer shell

The difference of time between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall would be 0.036s.

An echo is a reflection of sound that comes to the audience with a delay after the direct sound in audio signal processing and acoustics. The delay is directly proportionate to the separation between the source and the listener of the reflecting surface. One the kind audio effect that involves significantly delaying a signal is an echo effect. In this instance, after some period of time, listeners hear the same signal repeated clearly. When there is a noticeable delay in the sound, listeners can differentiate individual echoes.

The person seated in the middle row:

The distance sound traveled to middle row => 25/2 = 12.5m

The total distance the sound traveled to full length of auditorium and to the middle row => 25+12.5 => 37.5m

t1 => d1/v => 12.5/343 => 0.036s

t2 => d2/v => 25/343 => 0.072s

t2-t1 => 0.036s

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