if a pendulum-driven clock gains 7.80 s/day, what fractional change in pendulum length must be made for it to keep perfect time? (your answer should be negative if the length is decreased.)

The heating curve is a representation of temperature change for a body with time as shown on cartesian axes.

The heating curve is a representation of temperature change for a body with time as shown on cartesian axes.

The point A represents the steady increase in the temperature of the solid. The point B shows the point of fusion, at this point, the solid is transformed into liquid. The point C shows the temperature rise with time as the liquid is heated. The point D shows the process of vaporization which converts the liquid to gas. The point E shows when the substance now exists in the gas phase.

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Thermal energy is transferred between objects only when they have different temperatures.

The movement of atoms and molecules within a substance is a form of energy known as thermal energy.

When two objects are in contact, or even in proximity, the atoms and molecules in the hotter object collide with those in the colder object.

Because of these effects, a portion of the kinetic energy from the more sizzling object is moved to the colder object, raising the temperature of the previous and bringing down the temperature of the last option.

A material's thermal conductivity — an estimation of how well it moves heat — decides how rapidly heat is moved between various sorts of materials.

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Answer: What do you need help with?

Explanation:

149,597,871 kilometres

hope it helps...!!!

Answer:

25N

Explanation:

if you calculate it right the answer will be 25

The weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosphere is, 4.56*10^5N.

To find the answer, we have to know about the pressure.

                 \(P=\frac{F}{A}\)

where; F is the force, here it is equal to the weight of the air column, and A is the area of cross section.

             \(P=1atm=1.013*10^5Pascals\)

            \(F=mg=P*A=1.013*10^5*4.5=4.56*10^5N\)

Thus, we can conclude that, the weight of a column of air with cross-sectional area 4. 5 m^2 extending from earth's surface to the top of the atmosphere is, 4.56*10^5N.

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The variables that affects angular momentum are both A and B (C).

Angular momentum is a fundamental physical quantity that describes the amount of rotational motion of an object around a fixed axis. It is defined as the product of the moment of inertia of the object and its angular velocity. The moment of inertia is a measure of an object's resistance to rotational motion and depends on the distribution of mass and the distance of the mass from the axis of rotation. The angular velocity, on the other hand, is the rate of change of the angle of rotation and depends on the linear velocity and the radius of the rotation.

Linear velocity is the rate of change of an object's position in a straight line, while angular acceleration is the rate of change of an object's angular velocity. An increase in the linear velocity of an object rotating around a fixed axis will result in an increase in its angular velocity, and hence an increase in its angular momentum. Similarly, an increase in the angular acceleration of an object will result in a change in the rate of change of its angular velocity, and thus a change in its angular momentum.

For example, consider a figure skater spinning on the ice. When the skater pulls their arms and legs closer to their body, their moment of inertia decreases, which causes their angular velocity to increase, resulting in an increase in their angular momentum. Similarly, when the skater applies a torque to their body, they experience an angular acceleration, which causes a change in their angular velocity and thus a change in their angular momentum.

The moment of inertia depends on the distribution of mass in the object and the distance of the mass from the axis of rotation. The angular velocity, on the other hand, depends on the linear velocity and the radius of the rotation.

Therefore, both linear velocity and angular acceleration can affect angular momentum. An increase in the linear velocity of an object rotating around a fixed axis will result in an increase in its angular momentum, while an increase in the angular acceleration will result in a change in the rate of change of its angular velocity, and thus a change in its angular momentum.

In summary, both linear velocity and angular acceleration can affect angular momentum. Thus, the correct option is both A and B (C).

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When describing an experience on a fast roller coaster, it is essential to focus on the different aspects of the ride that makes it thrilling, exciting, and memorable.

1. Start by explaining the roller coaster's design, emphasizing its height and speed.2. Describe the sensation of climbing the first hill and looking down from the top.3. Talk about the initial drop and the feeling of falling and weightlessness.4. Focus on the different elements that make the ride thrilling, such as loops, corkscrews, and twists.5. Highlight the acceleration and deceleration forces that create excitement.6. Mention the wind rushing through the rider's hair and the screams of excitement from fellow riders.7. Emphasize the adrenaline rush and the overall feeling of excitement and thrill that the ride provides.

Long Answer:When I was in Orlando, I went to Universal Studios to visit the park's attractions. The roller coaster named "The Incredible Hulk Coaster" caught my attention. This ride was one of the most amazing and thrilling experiences I have ever had. The roller coaster is a bright green color, and its height and speed can be seen from far away. As I approached the coaster, my heart began to race. The coaster's height was impressive, and I couldn't wait to get on the ride. I finally got on the coaster, and the safety bar locked me in. I was nervous but excited.The coaster began to climb the first hill, which seemed to be the highest hill I had ever seen. At the top, the view was incredible; I could see the whole park. Then came the big drop. The coaster plunged down, and I felt a sensation of falling. It was like I was weightless for a moment. It was a thrilling and unforgettable feeling. Then came the loops and corkscrews, which were dizzying but so much fun. The coaster's acceleration and deceleration forces made the ride more exciting and added to the overall experience. The wind was rushing through my hair, and I could hear the screams of excitement from other riders. The ride lasted for a few minutes, but it felt like it was over in seconds. The feeling of excitement and thrill stayed with me for the rest of the day. It was an incredible experience that I will never forget.

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Camping - Even on sweltering summer days, camping is a delightful outdoor activity.

However, if it's hot outside, your tent may become very uncomfortable. Thankfully, there are ways to keep your tent cool. By making the most of your supplies, setting up your tent in the ideal location, and using a tarp or umbrella to block off the sun, you may avoid the heat.

Three methods to keep the tent cool:

1. Bring your cooler of ice into the tent.

2. Use a battery-operated fan to circulate the air.

3. Open your tent’s door and vents if it has any.

4. Sleep on top of your sleeping bag to stay cool.

5. Remove the rain fly if the weather forecast doesn’t predict rain.

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A load cell is an essential sensor device used for converting a force, torque, pressure, or displacement into an electrical signal. It is a key component in electronic scales, force measuring instruments, and weighing devices. A student who designs an electric scooter uses a simple column type load cell with two strain gauges.

The load cell measures force or weight by converting the tension or compression acting on the load cell into an electrical signal. A load cell typically comprises four strain gauges that are arranged in a Wheatstone bridge configuration. A column type load cell is cylindrical in shape and is designed to measure loads in compression. It typically comprises two columns that are connected by a metal diaphragm. Two strain gauges are attached to the columns, one for measuring the compressive strain and the other for measuring the tensile strain.

The student designing an electric scooter uses a load cell to measure the weight of the rider and other loads on the scooter. The load cell is typically placed at the bottom of the scooter's frame, and the weight of the rider and the scooter is applied to it. The load cell measures the weight by converting the compression force acting on it into an electrical signal. The two strain gauges attached to the columns of the load cell measure the compressive and tensile strains, respectively. These strains are converted into an electrical signal using a Wheatstone bridge circuit, and the output of the bridge is proportional to the weight applied to the load cell.The student designing the electric scooter needs to select the right load cell for the application. The load cell must be able to measure the maximum weight that the scooter can carry. The column type load cell is suitable for measuring loads in compression, which is ideal for measuring the weight of the rider and the scooter. The two strain gauges attached to the columns of the load cell help to increase the sensitivity and accuracy of the load cell. The Wheatstone bridge circuit helps to convert the strain measurements into an electrical signal that can be processed by the scooter's control system.

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• All the cookies were eaten by him. • A letter is written by Luis. • The house is cleaned by Maria. • The car was repaired by Marco. • The book is read by Katty.

oraciones consist of a subject and a predicate, which contains the verb and provides information about the subject. Sentences can be simple or complex, and they can express statements, questions, commands, or exclamations. In writing and speech, sentences allow us to express our thoughts, share information, tell stories, ask for clarification, give instructions, and much more. They play a crucial role in conveying ideas, conveying emotions, and facilitating effective communication. Sentences provide structure and coherence to our language, allowing us to express ourselves clearly and engage in meaningful interactions with others. They are the building blocks of written and spoken communication, enabling us to express our ideas, thoughts, and experiences in a comprehensive and understandable manner.

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Answer:

It would lift the object to the same height than before you move it 3 centimeters to the left. You see, the height doesn't change if you move the inclined plane horizontally, because height is a vertical variable.

Therefore, if the inclined plane has a height of 1 meters, then the object will be lifted 1 meters up, no matter if you move the inclined plane 50 meters horizontally, it won't change its height.

Answer:

45/30

Explanation:

bbsksksbsnbksbsksbs

Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms. then her velocity would be 1.5 meters per second

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

Mathematically the formula of the momentum is

P = mv

where P is the momentum of the particle

m is the mass of the particle

v is the velocity by which the particle is moving

As given in the problem Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms

P = 45 Kilogram meters per second

m = 30 Kilograms

By substituting the values of the momentum and the mass in the formula of the momentum

P = mv

45 = 30 ×v

v = 45/30 meters per seconds

v = 1.5 meters per seconds

Thus, Nikki weighs 30 kilograms and moves at a 45 kilogram per the second momentum. subsequently, her velocity would be 1.5 meters per second.

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An ideal gas trapped inside a thermally isolated cylinder expands slowly by pushing back against a piston, then the temperature of the gas A. decreases.

A thermally isolated cylinder is an instrument that doesn't exchange heat with its surroundings. The piston in this case is moved in a slow way, so there isn't any change in the kinetic energy of the gas particles. The work done by the gas is equal to the negative of the area under the curve, which implies that the work done by the gas is negative. Because the work done by the gas is negative, the gas's internal energy decreases.

Because the internal energy of an ideal gas is equal to its temperature, the temperature of the gas decreases due to the expansion, since the internal energy decreases as the volume increases. In conclusion, when an ideal gas trapped inside a thermally isolated cylinder expands slowly by pushing back against a piston, then the temperature of the gas decreases. Therefore, the answer to this question is option (a) Decreases.

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Answer:

if positioned at height

Explanation:

just search it online

Answer: 1st, 4th, and 6th choice

A bow is drawn back from its equilibrium position.

A spring toy dart gun is loaded with a dart.

A bungee cord is stretched with a person at the end.

Explanation:

If these are the choices...

A bow is drawn back from its equilibrium position.

An arrow rests on a bow.

A spring toy dart gun is unloaded.

A spring toy dart gun is loaded with a dart.

A bungee cord is connected to a tall tower.

A bungee cord is stretched with a person at the end.

Edge 2021

2.18X103 N force must be exerted on a nail with a circular tip of 1.00 mm diameter to create a pressure.

diameter, d = 0.95 mm = 0.95x10-3m

P = 3.1X10^9 Pa

r = d/2 = 0.95/2 x 10^-3 m

= 0.475 x 10^-3 m

Area = \(\pi\) r2

= 3.14 x ( 0.475 x 10^-3 m)2

=  = 3.14 x 0.225 x 10^-6

= 0.706 × 10-6 m2

Force = PXA

= 3.1 x 10^9 x 0.70 6 × 10^-6

F = 2.18X103 N

Pressure , within the physical sciences, the perpendicular force in step with unit per area , or the stress at a factor inside a restricted fluid.

A easy instance of pressure can be seen by retaining a knife to a bit of fruit. In case you keep the flat part of the knife towards the fruit, it might not reduce the area. The force is spread out of a massive vicinity (low strain).

The SI unit of pressure is pascal (represented as Pa) which is identical to one newton in line with rectangular metre (N/m2 or kg m-1s-2).

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Answer:

A ( Jack did twice as much work as Jill

Explanation:

Answer:

Increasing the number of loops of wire around the iron core

Hope this helps!

Answer:

Explanation:

S = d/t

S = 1600/24

S = 66.66

The ventilation load in buildings refers to the principal energy used to handle the external fresh air to maintain the internal thermal comfort.

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The raw file size for a 320x240 12-bit thermal image is 115,200 bytes. Thermal images have smaller raw file sizes than digital camera images because they have lower resolution and color depth, resulting in less data being stored.

(i) To calculate the raw file size for a 320x240 12-bit thermal image, we need to consider the number of pixels and the bit depth. Each pixel in a 12-bit image can have 2¹² (4096) possible values.

The total number of pixels in a 320x240 image is 76,800 (320 x 240). Multiplying this by the bit depth, we get:

76,800 pixels x 12 bits/pixel = 921,600 bits

To convert this to bytes, we divide by 8:

921,600 bits / 8 = 115,200 bytes

Therefore, the raw file size for a 320x240 12-bit thermal image is 115,200 bytes.

(ii) The file size of a thermal image compared to a typical commercial digital camera image for the visible range is generally smaller due to a couple of reasons:

1. Resolution: Thermal images typically have lower resolution compared to commercial digital camera images. The example given is a 320x240 image.

While commercial digital cameras often capture images with higher resolutions like 12 megapixels (e.g., 4000x3000 pixels). The higher-resolution images from digital cameras contain more data per image, resulting in larger file sizes.

2. Color Depth: Thermal images are often grayscale or have limited color palettes. They usually use a lower bit depth, such as 12 bits, to represent the temperature variations.

In contrast, commercial digital cameras capture images with higher color depth, such as 24 bits (8 bits per color channel), resulting in more information per pixel and larger file sizes.

In conclusion, the raw file size of a thermal image is generally smaller compared to a typical commercial digital camera image due to lower resolution and color depth, resulting in less data being stored for each image.

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Answer:

This is because we are surrounded by positive ions from electromagnetic fields generated by computers, cell phones, and other electronic devices which can impair brain function and suppress the immune system causing symptoms such as: anxiety, breathing difficulty, fatigue, headaches, irritability, lack of energy, poor concentration, nausea, and vertigo,

Explanation:

Answer:

Ions can be harmful because ions can produce dangerous indoor ozone and  can waste space and electricity. Hours of negative ion exposure can produce symptoms of depression. On the other hand, ions can help improve our immune systems by strengthening our immune cells. Ions can also speed up the production of antibiotics.

Answer:

5,0000

Explanation:

because if u divide the 10 by 2 possible it will be 5 so u add your zero

The potential energy of the fighter jet of mass 'm' at a height of 10000 meters will be 98000m.

The energy of the body due to its position is called potential energy. If a body of mass 'm' is at height 'h' above the ground, then its potential energy with respect to earth will be -

E[P] = mgh

Given is a fighter jet traveling at a height of 10,000 meters.

The potential energy of a body at height 'h' above the ground is given by-

E[P] = mgh

where -

m is the mass of body

g is the acceleration due to gravity

Assume that the mass of jet fighter is 'm'. Then its potential energy will be -

E = mgh

E = m x 9.8 x 10000

E = 98000m

Therefore, the potential energy of the fighter jet of mass 'm' at a height of 10000 meters will be 98000m.

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Answer:

the gravity was pulling the cup to the front of the window even though the wind was pushing it the other way.

Explanation: the gravity must be strong

By using the Newton's first law of Motion, it can be explained why the coffee spilt all over the windshield. This is because there is gravitational force which acts upon it and it pushes the substances in the downward direction towards the Earth.

Newton's first law of Motion states that a body remains in the same state of rest or uniform motion in a straight line unless and until an external force is applied on it. This means that a body will not start moving by itself until and unless an external force acts on it.

In this case, lachance's daughter is trying to pick her coffee cup, the coffee cup at the windshield is spilt which makes it difficult for her to see. This is because, there is the gravitational force or gravity which is pulling the coffee cup to the front of the window even though the wind was pushing it in the other way.

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This statement is generally true. When an atom absorbs a photon, it is usually because the photon has the exact amount of energy needed to move an electron from a lower energy level to a higher energy level. When the electron moves to an upper orbital, the atom gains energy. This is known as an "excited state".

On the other hand, when an atom emits a photon, it is usually because an electron moves from a higher energy level to a lower energy level. When the electron moves to a lower orbital, the atom loses energy. This is known as a "relaxed state".

However, it should be noted that in some cases, an atom can emit a photon even when an electron moves to a higher energy level. This occurs when the electron moves to a higher energy level but then quickly falls back down to its original level, releasing a photon in the process. This is known as "fluorescence" and is a common process in many materials.

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Answer:

hey mate here is your answer

So if an object has a very small velocity (not moving very far over time, even though a large force may be applied to it, the Power will remain small. ... Stepping on the gas, or "speeding up" the car, is applying a force which will increase velocity and increase power.

please mark me as a brainliest

The large force stands for the application of force. If any condition of force is amplified the power needed will be less.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Force is defined as the product of mass and acceleration. Its unit is Newton.

The relation between the power, force and velocity is found as;

\(\rm P= FV \\\\\)

Power is the force multiplied by the speed. When a large force results in a relatively small power.

The large force stands for the application of force. If any condition of force is amplified the power needed will be less.

Hence large force results in a relatively small power

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Explanation:

the particles in liquids and gases move faster when they are heated than they do when they are cold. As a result, the particles take up more volume.