The work-energy principle states that the work done by all the __________ forces acting on an object (or system of objects) causes a change in total __________ of the object or system.

According to the given statement Mrs. Brown's electricity bill for the current month is $5000.00.

To calculate Mrs. Brown's electricity bill for the current month, we need to determine the total number of kilowatt-hours (kWh) she has consumed and apply the corresponding rates.

1. Calculate the electricity usage:

  Current meter reading - Previous meter reading
  20,300 kWh - 17,800 kWh = 2,500 kWh

2. Determine the cost for the first 2000 kWh:

  $1.00/kWh * 2000 kWh = $2000.00

3. Determine the cost for the remaining kWh:

  500 kWh * $3.50/kWh = $1750.00

4. Add the fuel adjustment charge:

  $0.50/kWh * 2500 kWh = $1250.00

5. Calculate the total bill:

  $2000.00 + $1750.00 + $1250.00 = $5000.00


To calculate the electricity bill, we first find the difference between the current and previous meter readings.

In this case, Mrs. Brown used 2,500 kWh.

For the first 2000 kWh, the cost is $1.00 per kWh, resulting in a charge of $2000.00.

For the remaining 500 kWh, the cost is $3.50 per kWh, totaling $1750.00.

Additionally, a fuel adjustment charge of $0.50 per kWh is added to the bill. This amounts to $1250.00.

Finally, we add up all the charges to get the total bill, which is $5000.00.

To know more about electricity visit;

https://brainly.com/question/12791045

#SPJ11

The color change from colorless liquids to a yellow solid in the chemical reaction occurred likely due to the formation of a new compound with specific electronic structures or absorption properties.

The color change from colorless liquids to a yellow solid in a chemical reaction can be attributed to the formation of a new compound with different electronic structures and absorption properties. Some possible reasons for this color change could include:

1. Formation of a colored compound: The reaction may result in the formation of a compound that absorbs certain wavelengths of light, giving it a distinct color. The presence of specific electronic transitions or chromophores within the newly formed compound can cause the absorption and reflection of light, resulting in a visible color change.

2. Formation of a precipitate: The reaction may involve the formation of a solid precipitate, which can exhibit color due to various factors such as impurities, crystal structure, or ligand-metal interactions. The formation of the yellow solid could be a result of the precipitation of a compound that has a yellow color.

3. Change in oxidation state: The reaction might involve a change in the oxidation state of one or more elements, leading to the formation of compounds with different colors. Transition metal compounds, for example, can exhibit a wide range of colors depending on their oxidation states and coordination environments.

learn more about chemical reaction here:

https://brainly.com/question/29762834

#SPJ4

Answer:

1. solid to liquid

2.liquid to gas below surface of water

3.liquid to gas at the surface of the water

4. gas to liquid

5. liquid to solid

The right response is That dry air will get drier and the moisture will get even more moist.

Mass is a physical quantity. This unit of mass measuring is an object's weight. It is measurable in conventional mass units such milligrams, kilograms, and pounds. Although smaller things are measured in grams, the kilogram is the actual SI mass unit.

The best way to grasp mass is the amount of matter that any item or body is made of. There is mass in everything we are able to see. A table, a chair, your bed, the ball, a cup, or even air are examples of items with mass. Everything is therefore either lighter or heavy.

To know more about masses visit:

brainly.com/question/17067547

#SPJ4

Answer:

a. normal

Explanation:

In the field of physics the normal is a line drawn at a right angle to a barrier. In other words the normal line is the line that is drawn perpendicular (right angle, 90 degrees) to the reflective surface of a mirror, or the particular boundary in which refraction occurs at the point of incidence of a light ray. This can be seen in the picture attached below.

Answer:

i read the whole thing the answer that matches the most is C

hope this helped :D

Explanation:

Answer: The rock's speed as it left your hand was 8.8 m/s.

Explanation: The system is the rock and the Earth. The initial state is the rock at rest in your hand 2.8 m below the Frisbee. The final state is the rock hitting the Frisbee at a speed of 4.0 m/s.

Using conservation of energy, we know that the initial potential energy of the rock-Earth system is transformed into both kinetic energy and potential energy at its maximum height. Therefore, we can use the conservation of energy equation:

potential energy (initial) = kinetic energy (final) + potential energy (final)

mgh = 1/2mv^2 + mgh

where m is the mass of the rock, g is the acceleration due to gravity, h is the height that the rock has been raised, and v is the velocity of the rock.

We can solve for the initial velocity by rearranging the equation:

v = sqrt(2gh + v^2)

Plugging in the values, we get:

v = sqrt(2 * 9.81 * 2.8 + 4^2)

v ≈ 8.8 m/s

Therefore, the rock's speed as it left your hand was 8.8 m/s.

The vector B has a magnitude of 25 m and makes an angle of -30 degrees with the +x-axis.

A vector is a mathematical object that has both magnitude and direction. It can represent physical quantities such as force, velocity, and acceleration, as well as abstract concepts such as direction and space. Vectors are often used to represent the change in position or movement of an object over time, or to represent the relationship between two or more points. Vectors can also be used to describe the shape of an object, as well as the relationships between objects.

To learn more about vector

https://brainly.com/question/356987

#SPJ1

The takeoff speed of the aircraft is approximately 41.6 m/s.

The wing loading of the aircraft is approximately 1128.6 N/m².

The required power to maintain a constant cruising speed of 300 km/h is approximately 173791.5 W.

1. Lift = Weight

1/2 * density * velocity² * wing area * lift coefficient = mass * gravity

1/2 * 1.225 * velocity² * 35 * 0.45 = 4000 * 9.81

Simplifying and solving for velocity, we get:

velocity = ✓((4000 * 9.81 * 2) / (1.225 * 35 * 0.45)) = 41.6 m/s

(b) Wing loading = Weight / wing area

Wing loading = 4000 * 9.81 / 35 = 1128.6 N/m²

Therefore, the wing loading of the aircraft is approximately 1128.6 N/m²

(c) Drag = 1/2 * density * velocity² × wing area * drag coefficient

Substituting the given values, we get:

Drag = 1/2 * 1.225 * (300/3.6)² * 35 * 0.035 = 2085.5 N

Power = force * velocity

Power = 2085.5 * 83.33 = 173791.5 W

Learn more about speed on

https://brainly.com/question/13943409

#SPJ4

Answer:

   Muscular dystrophy (MD) is a group of inherited diseases in which the muscles that control movement (called voluntary muscles) progressively weaken. In some forms of this disease, the heart and other organs are also affected. There are nine major forms of muscular dystrophy: Myotonic.

In most cases, muscular dystrophy (MD) runs in families. It usually develops after inheriting a faulty gene from one or both parents. MD is caused by mutations (alterations) in the genes responsible for healthy muscle structure and function.

Explanation:

does this help

Answer:

The first historical account of muscular dystrophy appeared in 1830, when Sir Charles Bell wrote an essay about an illness that caused progressive weakness in boys. Six years later, another scientist reported on two brothers who developed generalized weakness, muscle damage, and replacement of damaged muscle tissue with fat and connective tissue. At that time the symptoms were thought to be signs of tuberculosis. In the 1850s, descriptions of boys who grew progressively weaker, lost the ability to walk, and died at an early age became more prominent in medical journals. In the following decade, French neurologist Guillaume Duchenne gave a comprehensive account of 13 boys with the most common and severe form of the disease (which now carries his name—Duchenne muscular dystrophy). It soon became evident that the disease had more than one form, and that these diseases affected people of either  and of all ages. Muscular dystrophy (MD) refers to a group of more than 30 genetic diseases that cause progressive weakness and degeneration of skeletal muscles used during voluntary movement. The word dystrophy is derived from the Greek dys, which means "difficult" or "faulty," and troph, or "nourish.

Explanation: this is one paragraph hope this helps

Answer:

1.1259*10^9 Newton per Columb

Explanation:

the magnitude of the electric field intensity can be calculated using the expresion below;

E=Kq/r^2

Where k= constant

q= electric charge

r=distance= 2cm= 20*10^-2m( we convert to m for unit consistency

:,K=59*10^9 Columb

If we substitute the value into above formula we have

E=(9*10^9)*(5*10^-3)/(20*10^-2)^2

=1.1259*10^9 Newton per Columb

Therefore,the magnitude of the electric field intensity in vacuum at a distance of 20 cm is 1.1259*10^9 Newton per Columb

When a weightless spring scale is attached to two equal weights, the reading on the scale will be zero. This is because the weights on both sides are balanced, resulting in no net force acting on the scale.

The reason for this is Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. In this case, when one weight exerts a downward force on the spring scale, the other weight exerts an upward force of the same magnitude on the scale.

These opposing forces cancel each other out, resulting in a net force of zero. As a result, the spring scale does not experience any deformation and the reading remains at zero.

It is important to note that this only applies when the two weights are equal. If the weights were different, there would be an imbalance in the forces, causing the spring scale to register a non-zero reading.

In summary, when a weightless spring scale is attached to two equal weights, the reading on the scale will be zero due to the balanced forces acting on it.

For more question  force

https://brainly.com/question/17927930

#SPJ8

Answer:

Inner planets are small because the heat of the Sun baked off the hydrogen. The outer planets are large because they were colder and did not get the hydrogen baked off. Among the outer planets, they get smaller as you get further out because they formed nearer the edge of the cloud that supplied the material. There was just less to build from.

The magnetic field around a current-carrying wire is directly proportional to the current and inversely proportional to the distance from the wire.

The magnetic field strength generated by a current-carrying wire follows the right-hand rule. As the current increases, the magnetic field strength also increases. This relationship is described by Ampere's law.

Additionally, the magnetic field strength decreases as the distance from the wire increases, following an inverse square law. This means that doubling the current will double the magnetic field strength, while doubling the distance from the wire will reduce the field strength to one-fourth of its original value. Therefore, the magnetic field around a current-carrying wire is directly proportional to the current and inversely proportional to the distance from the wire.

To know more about  magnetic field visit:

brainly.com/question/12691714

#SPJ

It is important to note that the debate between scientific realism and antirealism is ongoing and complex, with various nuances and perspectives within each position. Different philosophers of science and scientists may hold different views on the nature of scientific terms and their relationship to reality.

According to a scientific realist perspective, scientific terms for unobservable phenomena such as "atom" and "black hole" are seen as referring to entities that truly exist in reality. Scientific realists believe that scientific theories and concepts accurately capture aspects of the world, including unobservable entities and phenomena. They argue that scientific theories provide the best explanation of the natural world and aim to describe the underlying structure and mechanisms of reality.

On the other hand, scientific antirealists hold a different view. They argue that scientific terms that refer to unobservable phenomena do not necessarily correspond to something that exists independently in reality. Antirealists often emphasize the instrumentalist view of science, which suggests that scientific theories are simply tools or frameworks that help us organize and predict observable phenomena, without making claims about the ultimate nature of reality.

Antirealists may argue that scientific theories are subject to revision and change over time as new evidence emerges, suggesting that the terms used to describe unobservable phenomena are not fixed and may not have a one-to-one correspondence with actual entities in reality. They may also highlight the role of social and cultural factors in shaping scientific knowledge, suggesting that scientific terms are influenced by human conventions and interpretations.

To learn more about realism , click here : https://brainly.com/question/30639821

#SPJ11

steadily along a uniform flow tube of cross section area 20cm². The total pressure is 3x104pa and static pressure is 2.5x104 pa. Calculate the velocity of the fluid.

Answer:

einy obv

Explanation:

he did lsd

Parts of the mixer become hot because some of the electrical energy is converted into heat energy.

When electrical energy flows through a wire, it encounters resistance, which causes the wire to heat up. In a mixer, the electric motor converts electrical energy into mechanical energy to rotate the blades, but some of the electrical energy is lost as heat due to resistance in the motor's winding and other electrical components. This heat energy can accumulate in the mixer's parts and cause them to become hot. In many electrical devices, heat is an undesirable byproduct of energy conversion and can lead to reduced efficiency, damage, or safety hazards.

To know more about electrical energy, here

brainly.com/question/16182853

#SPJ4

--The complete Question is,  Fill in the blanks. " Parts of the mixer become hot because some of the electrical energy is changed into____"--

Answer:

22 kgs

Explanation:

440.925 pounds if thats what you mean but kgs is the weight system for everyone but america

Answer:

vega the first one

pb

p

Explanation:

Connecting household appliances in series has several disadvantages, including the failure of one appliance leading to the failure of the entire circuit, voltage drop across each appliance, and difficulty adding new appliances to the circuit.

Connecting household appliances in series means that they are connected one after the other in a single circuit. The current flows through one appliance before it flows through the next one.

While this type of connection may work for some types of appliances, it is not practical for most household appliances due to its significant disadvantages.

One significant disadvantage of connecting household appliances in series is that the failure of one appliance can cause the entire circuit to fail. In a series circuit, the current must flow through every appliance to complete the circuit.

If one appliance fails, the circuit becomes incomplete, and all the other appliances in the circuit will stop working. Another disadvantage of connecting household appliances in series is that the voltage drops across each appliance.

As the current flows through each appliance, some of the electrical energy is converted to heat or other forms of energy, causing the voltage to decrease as the current flows through the circuit. This can cause the appliances at the end of the circuit to receive a much lower voltage than they need, leading to their improper functioning.

Know more about series here:

https://brainly.com/question/18713901

#SPJ11

Answer:

Gamma

Explanation:

Alpha particles are similar to Helium particles, which have a mass of 4.

Beta particles are electrons, and they have a mass of 1/1836, a charge of -1.

Protons have a charge of +1 and a mass of 1.

Gamma emission is in waves, not particles, so they have no mass and no charge.

Gamma particle has no mass or charge. Hence option C is correct.

A gamma ray, commonly known as gamma radiation (symbol or gamma), is a kind of electromagnetic radiation that is produced by the radioactive disintegration of atomic nuclei. It is made up of electromagnetic waves with the smallest wavelengths, which are often shorter than those of X-rays. It gives the most photon energy at frequencies exceeding 30 exahertz (31019 Hz). Paul Villard, a French scientist and physicist, discovered gamma radiation in 1900 while researching radium radiation. Ernest Rutherford dubbed this radiation gamma rays in 1903 because of its comparatively significant penetration of matter; in 1900, he named two less penetrating forms of decay radiation (discovered by Henri Becquerel) alpha rays and beta rays in ascending order of penetrating strength.

To know more gamma :

https://brainly.com/question/31662342

#SPJ5.

A geologic feature of divergent plate continental crust is called a zone of rifting.

A zone of rifting is a geologic feature that occurs where tectonic plates are moving away from each other, causing the Earth's crust to stretch and thin. This process can result in the formation of a long, narrow depression called a rift valley.

A geologic feature of divergent plate continental crust is called a zone of rifting. This is a region where tectonic plates are moving away from each other, causing the Earth's crust to stretch and thin. As the crust stretches, faults and fractures can develop, and magma from the Earth's mantle can rise to the surface, creating volcanic activity. Over time, this process can lead to the formation of a new ocean basin if the rifting continues and the plates continue to move apart. Some examples of zones of rifting include the East African Rift Valley and the Mid-Atlantic Ridge.

To know more about zone of rifting:

https://brainly.com/question/987497

#SPJ1

Answer:

81.6 m

Explanation:

Answer: 81.6 m.

The time it takes gravity to slow 40 m/s to zero when it teaches maximum height is

-v(initial) / -g = t

-40 m/s / -9.8 m/s^2 = 4.08 s

The height reached is the average velocity times this time 4.08 s, with v(avg) = [v(initial) + v(final)] / 2 with v(final) = 0. v(avg) = v(initial) / 2 = 40 m/s / 2 = 20 m/s.

So the distance d of maximum height is

d = v(avg)•t

d = 20 m/s • 4.08 s = 81.6 m.

Answer:

80m

Explanation:

time taken for stone to reach max-height is t=final velocity - intial velocity / acceleration due to gravity

t=v-u/g

where:

v=0 , u=40m/s ,g=-10m/so

: t=0-40/-10

t=4secs

: max-height reach=ut + 0.5gt²

=(40)(4)+(0.5)(-10)(4)I

=160-5(16)

=160-80

=80m

Infrared and visible light are also not blocked by the ozone layer and can pass through it. Ultraviolet

The ozone layer in the stratosphere absorbs and blocks most of the ultraviolet radiation from the sun. This is important as ultraviolet radiation can cause skin damage and increase the risk of skin cancer. Gamma rays and radio waves are not affected by the ozone layer as they have too high or low frequencies respectively.

Ozone in the stratosphere blocks ultraviolet (UV) radiation from the sun. This is important because UV radiation can be harmful to living organisms, causing skin damage, eye damage, and even cancer. The ozone layer effectively absorbs and prevents most of the UV radiation from reaching the Earth's surface, protecting life on our planet.

To know more about light visit:

https://brainly.com/question/30223248

#SPJ11

The total distance travelled during the vehicle's journey as found from the speed-time graph is 6.125 m

V = d / t

V = ( u + v ) / 2

V = Average Speed

d = Distance

t = Time

u = Initial velocity

v = Final velocity

During the first 0.5 s, u = 0 and v = 1 m / s.

d = ( 0 + 1 ) * 0.5 / 2

d = 0.25 m

During the next 0.5 s, u and v are equal meaning constant velocity ( V = 1 m / s ).

d = 1 * 0.5

d = 0.5 m

During the next 1 s, u = 1 m / s and v = 1.5 m / s.

d = ( 1 + 1.5 ) * 1 / 2

d = 1.25 m

During the next 2.5 s, u and v are equal meaning constant velocity ( V = 1.5 m / s ).

d = 1.5 * 2.5

d = 3.75 m

During the next 0.5 s, u = 1.5 m / s and v = 0.

d = ( 1.5 + 0 ) * 0.5 / 2

d = 0.375 m

Total distance travelled is the sum of all the individual distances calculated.

Total distance travelled = 0.25 + 0.5 + 1.25 + 3.75 + 0.375

Total distance travelled = 6.125 m

Therefore, the total distance travelled during the vehicle's journey as found from the speed-time graph is 6.125 m

To know more about speed-time graph

https://brainly.com/question/16825120

#SPJ1

The two closest isotopes for gold-197 are gold-196 and gold-198.

The atomic number of gold is 79, which means it has 79 protons. Gold-197 refers to the isotope of gold with a mass number of 197, indicating the total number of protons and neutrons in the nucleus.

The two closest isotopes to gold-197 are:

1. Gold-196: It has 79 protons and 117 neutrons (197 - 79 = 118).

2. Gold-198: It has 79 protons and 119 neutrons (197 - 79 = 118).

Therefore, the two closest isotopes to gold-197 are gold-196 and gold-198, with the number of neutrons being the only difference between them.

To know more about isotopes refer here

https://brainly.com/question/48975081#

#SPJ1

In the actual case where there is water inside the eye, the lens needs to be stronger than if there were only air in our eyes.

This is because the refractive index of water is higher than that of air, meaning that light will bend more when it passes through water than when it passes through air. This makes it harder for the eye to focus light onto the retina, and so a stronger lens is needed to compensate for this increased bending.

If there is also water outside the eye, such as when we are underwater, we need to wear goggles to provide a layer of air in front of our eyes, which allows light to be refracted less and therefore makes it easier to see clearly.

To know more about lens, here

brainly.com/question/31190743

#SPJ4