Where does the rest of the energy 90% go?

this question is centered around newtons second law f=ma

First you need to find the acceleration

\( acceleration = \frac{8 - 0}{22} \)

that gives you 0.36 recurring(on both numbers) m/s²

mass= force ÷ acceleration

\( mass = \frac{31}{0.36recurring} \)

mass= 85.25 kg

if you want to check

f=ma

85.25 × 0.36 recurring (remember its on both numbers not just 6) = 31 N

Answer:

Explanation:

Givens

F = 31 N

vi = 0

vf = 8 m/s

t = 22 seconds

m = ?

Formula

F = m ( vf - vi)/t

Solution

31 = m (8 - 0) / 22             Multiply both sides by 22

31 * 22 = 8 * m

8m = 682                          Divide by 8

m = 682 / 8

m = 85.25

From Paris to Qatar for the world cup, two French riders traveled by bicycle. In three months, 7,000 kilometers overall.

The Fédération Internationale de Football Association (FIFA), the world's governing organization of association football, and its senior men's national teams compete in the FIFA World Cup, commonly referred to as the World Cup. With the exception of 1942 and 1946, when it was postponed due to World War II, the tournament has been conducted every four years since its inception in 1930. The current winners are France, who captured their second championship during the 2018 competition in Russia.

The structure uses a qualification round to choose the teams that advance to the tournament phase, which occurs over the previous three years. 32 teams fight for the title at sites in the host country or nations during the tournament round.

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The maximum possible speed of the train at the end of the first 4.0 km of the journey is 0 m/s.

To calculate the maximum possible speed of the train at the end of the first 4.0 km of the journey, we can apply the principle of conservation of energy.

Assuming there are no external forces like friction or air resistance, the initial potential energy of the train will be converted into kinetic energy.

The potential energy (PE) of the train at the beginning of the journey can be calculated as PE = mgh, where m is the mass of the train, g is the acceleration due to gravity (approximately \(9.8 m/s^2\)), and h is the height difference (in this case, we assume it to be zero).

The kinetic energy (KE) of the train at the end of the 4.0 km journey can be calculated as \(KE = (1/2)mv^2\), where v is the velocity of the train.

Since the potential energy is converted into kinetic energy, we can equate the two expressions:

PE = KE

\(mgh = (1/2)mv^2\)

Simplifying and canceling out the mass:

\(gh = (1/2)v^2\)

Substituting the values, \(g = 9.8 m/s^2\)and h = 0, we get:

\((9.8 m/s^2)(0) = (1/2)v^2\)

Simplifying further:

\(0 = (1/2)v^2\)

This equation tells us that the maximum possible speed of the train at the end of the first 4.0 km of the journey is 0 m/s.

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Answer:

300

Explanation:

when the baby are born then they would have 300 bones but when they grow they would have 206 cause when they grow that 94 bones would convert into different kind of proton and energy I guess

a) The tangential speed of the ball is 1.26 m/s

b) The centripetal acceleration of the ball is 1.99 m/s^2.

We need to use the formulas for tangential speed and centripetal acceleration:

Tangential speed = radius x angular speed

Centripetal acceleration = (tangential speed)^2 / radius

Given:

Mass of the ball, m = 5.00 kg

Radius of the circle, r = 0.800 m

Angular speed, ω = 0.500 rev/s

We need to convert the angular speed from revolutions per second to radians per second:

ω = 0.500 rev/s x 2π rad/rev = 1.57 rad/s

(a) Tangential speed of the ball:

v = rω = 0.800 m x 1.57 rad/s = 1.26 m/s

(b) Centripetal acceleration of the ball:

a = v^2 / r = (1.26 m/s)^2 / 0.800 m = 1.99 m/s^2

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Compared to Venus, Earth's volcanoes produced significantly less carbon dioxide gas. Carbon dioxide was originally abundant on Earth, but it was lost to space during the violent bombardment that occurred early in the history of our solar system.

Everything boils down to water. Although there are large oceans of liquid water on Earth, Venus and Mars' atmospheres are predicted to be dominated by carbon dioxide. Since carbon dioxide is easily dissolved in water, our oceans absorbed a large portion of the atmospheric CO2, leaving an ammonia-dominated environment. Evidently, Venus is close enough to the Sun that the small amount of carbon dioxide in its early atmosphere, which was similar to Earth's, led the surface to warm and release additional carbon dioxide into the atmosphere.

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Answer:

Energy is being transferred

Explanation:

If you are pushing an object, you are transferring your energy to the object causing it to move

Answer:

Generally, when thermal energy is transferred to a material, the motion of its particles speeds up and its temperature increases. There are three methods of thermal energy transfer: conduction, convection, and radiation. ... Convection transfers thermal energy through the movement of fluids or gases in circulation cells.Convection. When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along. This type of heat transfer is called convection. The fluid above a hot surface expands, becomes less dense, and rises.

Answer:

Physics is the natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force.

Ancient history. Elements of what became physics were drawn primarily from the fields of astronomy, optics, and mechanics, which were methodologically united through the study of geometry. These mathematical disciplines began in antiquity with the Babylonians and with  writers such as Archimedes and Ptolemy.

Answer:

I don't know but It should exist or else reality would not exist

Explanation:

Answer: 64 kobos for 8 hours

Explanation:

To calculate the cost of running the bulbs for 8 hours, we need to first determine the total energy consumed by the bulbs.

Energy consumed by the 40-watt bulb in 8 hours = 40 watts * 8 hours = 320 watt-hours

Energy consumed by one of the 60-watt bulbs in 8 hours = 60 watts * 8 hours = 480 watt-hours

Total energy consumed by the two 60-watt bulbs in 8 hours = 2 * 480 watt-hours = 960 watt-hours

Total energy consumed by all three bulbs in 8 hours = 320 + 960 = 1280 watt-hours = 1.28 kilowatt-hours (kWh)

Now, to calculate the cost of running the bulbs for 8 hours, we need to multiply the total energy consumed (1.28 kWh) by the cost of one unit (50 kobo).

Cost of running the bulbs for 8 hours = 1.28 kWh * 50 kobo/kWh = 64 kobo

Therefore, it will cost him 64 kobos to keep the bulbs lit for 8 hours

Answer:

6.58×10⁻¹⁸ J

Explanation:

Applying

E = kq²/r.................. Equation 1

Where E = potential energy, q = charge on each electron, r = distance between the electron, k = coulomb's constant.

From the question,

Given: r = 3.5×10⁻¹¹ m,

Constant: q = 1.6×10⁻¹⁹ C, k = 8.99×10⁹ Nm²/C²

Substitute these values into equation 1

E = (1.6×10⁻¹⁹)²(8.99×10⁹)/(3.5×10⁻¹¹)

E = 6.58×10⁻¹⁸ J

To make the masses (M1 + m) slide with a uniform speed, an additional mass of 8 kg should be placed over M1.

In this system of two masses connected by a string and pulley, the net force on each mass is different due to the difference in their masses. To make the system move with a uniform speed, the net force on each mass should be equal and opposite.

The coefficient of friction between M1 and the surface introduces a frictional force, which needs to be balanced by an additional force. This additional force can be provided by adding an additional mass on top of M1.

To calculate the required additional mass, we need to equate the forces acting on M1. The force due to gravity on (M1 + m) is (M1 + m)g and the force due to friction is μN, where N is the normal force.

The normal force is equal to the force due to gravity on M2, which is M2g. The tension in the string is the same throughout the system and is equal to (M1 + M2)g.

Thus, we have (M1 + m)g - μM2g = μM1g + (M1 + M2)g, where μ is the coefficient of friction. Solving for m gives us m = 8 kg.

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Over the course of 30 meters, a car accelerates steadily from zero to 25 m/s. the acceleration is 10.41 m/s^2, in this case.

A is the ideal answer. True Continually traveling in a straight line, an automobile is going at a speed of 30 m/s. The automobile is moving with zero acceleration.

The formula a = v/t denotes acceleration (a), which is the product of the change in velocity (v) and the change in time (t). Using meters per second squared (m/s2), you can gauge how quickly velocity varies.

v = 25 m/s, u = 0 m/s, s = 30 meter

So,

v^2 = u^2 + 2as

(25)^2 = (0)^2 + 2a(30)

a = 625/60

a = 10.41 m/s^2

Thus, the acceleration is 10.41 m/s^2.

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Initial velocity of car is 0.

Final velocity of car is 36 km/h.

Time taken to attain final speed is 2 minutes.

What is the acceleration of car ?

v = u + at

First change the final velocity from km/h to m/s and also time to seconds.

[ To change km/h to m/s multiply by 5/18 ]

➙ Final velocity = 36(5/18) = 10 m/s.

[ 1 minutes = 60 seconds ]

➙ 2 minutes = 2(60) = 120 seconds.

Now, we have

v = 10 m/s.

u = 0 m/s.

t = 120 s.

Hence, the acceleration of car is 0.083 m/s².

➟ The rate of change of velocity is called acceleration. It is denoted by a.

➟ The velocity at which motion starts is termed as initial velocity. It is denote by u.

➟ The last velocity of an object after a period of time. It is denoted by v.

\(\boxed{\large{\bold{\blue{ANSWER~:) }}}}\)

By 1st Equation of motion

we know that,

\(\boxed{\large{\sf{v \: = u \: + a \: t}}}\)

according to the question,

\(10 = 0 + a \times 120\\\\a \: = \frac{10}{120}\\\\a \: = \frac{1}{12}\\\\a=0.083\: m {s}^{ - 2}\)

Therefore,

Acceleration of the car is 0.083 ms^-2

The average friction force the rough region exerted on the toboggan is 316.64 N. The rough region reduce the toboggan's kinetic energy and speed by 58.79% and 35.71%, respetcively.

To calculate the average friction force exerted on the toboggan, we can use the work-energy principle, which states that the work done on an object is equal to the change in its kinetic energy. First, let's find the initial and final kinetic energies:

Initial kinetic energy (KE_initial) = 0.5 * mass * (initial speed)²
KE_initial = 0.5 * 365 kg * (4.20 m/s)² = 3231.3 J

Final kinetic energy (KE_final) = 0.5 * mass * (final speed)²
Final speed = initial speed - speed reduction = 4.20 m/s - 1.50 m/s = 2.70 m/s
KE_final = 0.5 * 365 kg * (2.70 m/s)² = 1331.475 J

Now, let's find the work done by the friction force:
Work = KE_final - KE_initial = 1331.475 J - 3231.3 J = -1899.825 J (negative since it opposes the motion)

Since work = force * distance, we can solve for the friction force:
Force = Work / Distance = -1899.825 J / 6.00 m = -316.6375 N

The average friction force exerted on the toboggan is 316.64 N (rounded to two decimal places).

To find the percent reduction in kinetic energy:
Percent reduction = ((KE_initial - KE_final) / KE_initial) * 100
Percent reduction = ((3231.3 J - 1331.475 J) / 3231.3 J) * 100 ≈ 58.79%

To find the percent reduction in speed:
Percent reduction = ((initial speed - final speed) / initial speed) * 100
Percent reduction = ((4.20 m/s - 2.70 m/s) / 4.20 m/s) * 100 ≈ 35.71%

The rough region reduced the toboggan's kinetic energy by approximately 58.79% and its speed by approximately 35.71%.

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Answer: 42.41 cm

Explanation:

The intensity of the second lamp can be calculated using the inverse square law, which states that the intensity of light decreases with the square of the distance from the source. The equation for the inverse square law is:

I2 = I1 * (d1/d2)^2

where I1 is the intensity of the first lamp, d1 is the distance from the first lamp to the screen, I2 is the intensity of the second lamp, and d2 is the distance from the second lamp to the screen.

Substituting the given values, we get:

I2 = 12.5 cd * (3.0 m/9.0 m)^2

I2 = 12.5 cd * (1/3)^2

I2 = 12.5 cd * 0.111

I2 = 1.39 cd

Therefore, the intensity of the second lamp is 1.39 cd.

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To convert the ideal-gas equation to relate Ppsig, Vft³, nlb-mole, and T°F and the total amount of gas is calculated by converting the moles of CO and N to lb-mole and to estimate the temperature needed to increase the gas pressure to 3000 psig, Convert the obtained temperature in K to °F.

The equation relating P (psig), V (ft³), n (lb-mole), and T* (°F) is:

P = 14.7 * P(atm), V = 28.3168 * V(L), n

= 2.20462 * n(mol), and T*

= (9/5) * T(K) - 459.67 and to calculate the total amount of gas in lb-mole, multiply the number of moles of CO by its molar mass and convert to lb-mole and to estimate the temperature in °F required to increase the gas pressure to 3000 psig.

(a) To convert the equation, we need to apply the following conversions:
- To convert P from atm to psig, multiply by 14.7 (since 1 atm = 14.7 psig).
- To convert V from liters to ft³, multiply by 28.3168 (since 1 liter = 0.0353 ft³).
- To convert n from mol to lb-mole, multiply by 2.20462 (since 1 mol = 2.20462 lb-mole).
- To convert T from K to °F, use the conversion formula:

T* = (9/5) * T(K) - 459.67.

(b) To calculate the total amount of gas in lb-mole, multiply the number of moles of CO by its molar mass (using the periodic table) and convert to lb-mole by multiplying by the molar mass of CO (28.01 lb/lb-mol). To calculate the mass of CO in lb, multiply the number of moles of CO by its molar mass (28.01 g/mol) and convert to lb by dividing by 453.59237 g/lb.

(c) To estimate the temperature in °F required to increase the gas pressure to 3000 psig, rearrange the ideal gas equation to solve for T*. Substitute the known values: P = 3000 psig (pressure limit), V = 3.5 ft³ (volume), n = 30.0 mole (number of moles), and solve for T*. Note that this estimate may not be accurate at high pressures.

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Answer:

a on edge

Explanation:

Answer:

According to the 2010 U.S. Census, there are approximately 8 million people living in Virginia. This is 2.8 million less than 4 times the population of Nevada.

What is the population of Nevada?

The first step is to  on both sides.

The second step is to  on both sides.

The population of Nevada is  million.

Explanation:

Answer:

degrees

Explanation:

If a direction is somewhere between north and east, it is measured in degrees.

This measurement will be possible thanks to the existence of geographical coordinates that are some 'imaginary lines' that help us find our location on the earth's surface. These lines are called latitude and longitude, both of which are measured in degrees.

It is like a sea battle game where you have to combine the rows and columns in order to identify where the targets are located. Geographic coordinates work the same way, you must combine the rows and columns of the planisphere to identify the locations of the planet. So the lines would be the latitudes and the columns the longitudes.

The width of the slit is 0.212 mm.

The wavelength of light is defined as “The distance between the two successive crests or troughs of the light wave”.

We know that the distance between minima is given by :

                                       \(t = (m_{f} - m_{i} ) \alpha x/d\)

where, t = distance between minima

            \(\alpha =\) wavelength

            x = distance of screen

            d = width of slit

            \((m_{f} - m_{i} ) =\) difference between minima

Given, x = 40 cm = 0.4 m

           \(\alpha = 690 nm = 690 * 10^{-9} m\)

           t = 2.60 mm = \(2.60 * 10^{-3} m\)

           \((m_{f} - m_{i} ) =\) 3 -1 = 2

Putting these values in above equation we get d = 0.212 mm

So the width of the slit is 0.212 mm.

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Answer:

0.0003945 kg / m6

Explanation:

Answer:

The angle of launch is 52.49 Degree.

Explanation:

The Range R and Height H of a thrown object is calculated using the formula,

R=V₀² sin(2φ)/g

H=V₀²sin²(φ)/g

From these equations it can be written,

V₀²=R g/ sin(2φ)

V₀²=H g/ sin²(φ)

These values are equal so it can be written by equating these equations,

R g/sin(2φ)=H g/sin²(φ)

tan(φ)= 2H/R

Given H=72.3 m and R=111 m, the angle of launch is,

tan(φ)= 2*72.3/111

φ= 52.49 Degree.

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Answer:

the size, length, or amount of something, as established by measuring.

Explanation:

Answer:

1. \(h = 244.8 m\)    

2. \(x = 564.8 m\)  

Explanation:

1. La altura máxima se puede calcular usando la siguiente ecuación:

\( v_{f}^{2} = v_{0}^{2} - 2gh \)     (1)                        

Where:

\(v_{f_{y}}\): es la velocidad final = 0 (en la altura máxima)  

\(v_{0_{y}}\): es la velocidad inicial horizontal en "y"

g: es la gravedad = 9.81 m/s²          

h: es la altura máxima =?

La velocidad incial en "y" se puede calcular de la siguiente manera:

\( tan(\theta) = \frac{v_{0_{y}}}{v_{0_{x}}} \)

\( v_{0_{y}} = tan(60)*40 m/s = 69.3 m/s \)                    

Resolviendo la ecuación (1) para "h" tenemos:

\(h = \frac{v_{0_{y}}^{2}}{2g} = \frac{(69.3 m/s)^{2}}{2*9.81 m/s^{2}} = 244.8 m\)          

2. Para calcular el alcance horizontal podemos usar la ecuación:

\(x = v_{x}*t\)

Primero debemos encontrar el tiempo cuando la altura es máxima (\(v_{f_{y}}\) = 0).

\( v_{f_{y}} = v_{0_{y}} - gt \)    

\( t = \frac{v_{0_{y}}}{g} = \frac{69.3 m/s}{9.81 m/s^{2}} = 7.06 s \)      

Ahora, como el tiempo de subida es el mismo que el tiempo de bajada, el tiempo máximo es:

\( t_{m} = 2*7.06 s = 14.12 s \)          

Finalmente, el alcance horizontal es:

\(x = 40 m/s*14.12 s = 564.8 m\)                                                            

Espero que te sea de utilidad!

A wavelength of 4.653 μm is observed in a hydrogen spectrum for a transition that ends in the = 5 level. The initial level of the electron is 4. The correct option is E.

The formula to find the initial level of the electron is given by

Ei = (-13.6eV) [(1/n1²) - (1/n2²)]

where Ei is the energy of the initial level, eV is electron volts, n1 is the initial energy level, and n2 is the final energy level.

The wavelength of 4.653 μm is observed in a hydrogen spectrum for a transition that ends in the = 5 levels. The final level n2 is equal to 5. The formula can be rearranged to calculate the initial energy level of the electron:

n1 = √[(1/(1/n2²)) - (Ei / -13.6eV)]

Where n1 is the initial energy level.

We know that n2 is equal to 5. Using this, we can now calculate the initial energy level of the electron. Substitute the values in the formula, we get, n1 = √[(1/(1/5²)) - (-13.6 eV) / -13.6 eV)] = √(1/25 + 1) = √(26/25) = 1.08. The initial energy level, n1, is between 1 and 2. The answer is, therefore, e. 4.

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Complete Question:

A wavelength of 4.653 μm is observed in a hydrogen spectrum for a transition that ends in the = 5 levels. What was for the initial level of the electron?

a. 8

b. 7

c. 6

d. 9

e. 4

Answer:

C

Explanation:

I took the test

Answer:

Hope it helps

Explanation:

C

A multimeter can be used to test a mechanical switch for an open circuit. An open circuit occurs when there is a break in the circuit, causing the flow of current to stop.

To test for an open circuit in a mechanical switch, the multimeter needs to be set to the resistance or continuity mode. The leads of the multimeter are then placed on the terminals of the switch. If the switch is closed, there should be continuity, and the multimeter will display a low resistance reading.

If the switch is open, there will be no continuity, and the multimeter will display a high resistance reading. By testing for an open circuit in a mechanical switch, it is possible to identify if the switch is faulty or if there is an issue with the wiring or other components in the circuit.

This information can then be used to make the necessary repairs or replacements to ensure the proper functioning of the system.

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