The typical shock absorber is made to lessen both the shock, or "jounce," felt during compression strokes and the amount of rebound felt during rebound strokes.
The shock absorber uses hydraulic pressure during compression strokes to slow down and absorb the shock, or jounce, of the vehicle when it travels over bumps or potholes. The kinetic energy of the shock is transformed into thermal energy by a piston, cylinder, and hydraulic fluid, which work together to accomplish this. The shock absorber works to lessen the vehicle's rebound or bounce during rebound strokes, making the ride more comfortable. It accomplishes this by utilizing a valve to control the hydraulic fluid's flow and produce resistance, which aids in absorbing the rebound's energy.
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suppose you throw a ball vertically downward with a speed of 15 m/s. neglecting air friction, what would be the speed of the ball one second later?
The speed of an object under the influence of gravity can be found using the equation v = v0 + a * t, So the speed of the ball one second later would be 24.8 m/s.
where v is the final speed, v0 is the initial speed, a is the acceleration due to gravity (9.8 m/s^2 downward), and t is the time elapsed.
In this case, the initial speed is 15 m/s (vertically downward),
the acceleration due to gravity is 9.8 m/s^2 downward, and the time elapsed is 1 second, so:
v = 15 m/s + 9.8 m/s^2 * 1 s
= 24.8 m/s
Speed is a scalar quantity which tells how fast an object is moving, regardless of its direction.
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a cylinder is measured to have a diameter of 3.5 inches, and a length of 5.6 cm. its mass is 1600 grams. calculate its density in kg/m3.
The density of the cylinder is 14100 kg/m³. The result is obtained by using the formula for density.
What is the density of a substance?The density is the mass of a substance per unit of volume. It can be expressed as
ρ = m/V
Where
ρ = densitym = massV = volumeA cylinder is measured to have
Diameter, d = 3.5 inchesLength, l = 5.6 cmMass, m = 1600 gramsFind its density in kg/m³!
The radius of the cylinder is
r = ½d
r = ½(3.5)
r = 1.75 inches
r = 1.75 × 2.54 cm
r = 4.4 cm
We find the volume of the cylinder.
V = ⅓ πr²l
V = ⅓ (3.14))(4.4)²(5.6)
V = 113.5 cm³
The density will be
ρ = m/V
ρ = 1600/113.5
ρ = 14.1 g/cm³
Let's convert the unit of density to kg/m³!
ρ = 14.1 × 1/1000 × 1000000/1 kg/m³
ρ = 14100 kg/m³
Hence, the cylinder has the density of 14100 kg/m³.
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what average mechanical power (in w) must a 66.0 kg mountain climber generate to climb to the summit of a hill of height 405 m in 47.0 min? note: due to inefficiencies in converting chemical energy to mechanical energy, the amount calculated here is only a fraction of the power that must be produced by the climber's body. hint
The average mechanical power must a 66.0 kg mountain climber generate to climb to the summit of a hill of height 405 m in 47.0 min = 92.89 Watts
Power determines the rate at which work is accomplished. The watt W is the SI unit of power, and 1 watt equals 1 joule per second (1W = 1J/s). Power is the rate at which energy is used up since work is energy transfer.
The equation,
P = W/t
Where:
P = power (watts)
W = work (J)
t = time (s)
Hence,
E = W
E = mgh
= (66.0 kg) (9.8 m/s²) (405 m)
= 261,954
So, the average mechanical power:
P = W/t
= 261,954 / 2820
= 92.89 watts
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a race car completes a lap on a 1600 m long track with an average speed of 250 km/h. if the car's average speed on the first half of the track was 210 km/h, what was its average speed on the second half?
The average speed on the second half of the track would be 290 km/h.
This can be calculated by dividing the total distance of 1600 m by the total time it took the car to complete the lap. Since the car's average speed on the first half of the track was 210 km/h, the total time it took to complete the entire lap would be 1600 m / (210 km/h x 1000 m/km) = 7.62 seconds.
Therefore, the average speed on the second half of the track would be 1600 m / (7.62 seconds x 2) = 290 km/h.
Speed is a scalar quantity that refers to the rate of motion of an object, measured in distance units per time units. It is the magnitude of the velocity vector, which is the rate at which an object changes its position in a given direction.
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lying flat on your stomach at the top of a cliff, you reach out level with the top of the cliff and drop a rock from rest. after 4.5 seconds the rock hits the bottom of the cliff. what is the height of the cliff in meters?
The height of cliff is 99.225 m.
The initial speed of rock is 0, it starts from rest.
The time taken is 4.5 seconds.
The acceleration is -g, as the rock is freely falling.
Distance travelled by the rock is the height of the cliff.
Using second law of Newton,
s= ut + 0.5 a t²
where s is the distance,
u is the initial speed,
a is the acceleration,
and t is the time.
s = 0 + 0.5(9.8)(4.5)(4.5)
s = 99.225 m
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what is the radial distance between the 500 v equipotential surface and the 1000 v surface? express your answer in meters to three significant figures.
The radial distance between the 500 V equipotential surface and the 1000 V surface is, 44.1 m.
The surface, the locus of all points at the same potential, is known as the equipotential surface. No work is required to move a charge from one point to another on the equipotential surface.
The electric potential at a certain point in space of distance r from a point charge q is given by
[tex]V = \dfrac{kq}{r}[/tex]
Rewriting it the other way,
[tex]r = \dfrac{kq}{V}[/tex]
As, k and q remains constant, the difference between distances of two points is,
[tex]r_1-r_2 = kq \times (\dfrac{1}{V_1}-\dfrac{1}{V_2})[/tex]
Put, 500 and 1000 for [tex]V_1[/tex] and [tex]V_2[/tex] respectively.
[tex]r_1-r_2 = 4\pi \times 10^{7} (4.0 \times 10^{-6}) \times (\dfrac{1}{500}-\dfrac{1}{1000})\\r_1-r_2 = 16\pi \times 10^{1} \times \dfrac{1}{1000}\\r_1-r_2 = 16\pi \times 10^{-2}[/tex]
The distance is 44.1 meters.
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--The complete question is, A +4.90 μC point charge is sitting at the origin. What is the radial distance between the 500 V equipotential surface and the 1000 V surface?--
what collides and creates a movement of heat called conduction?
Conduction is the name given to the flow of heat that occurs when two materials or objects collide directly.
What is a heat answer?Heat is a type of energy that moves when there is temperature differential between two bodies and causes a feeling of warmth. Its temperature energy can be turned into other types of energy, such as mechanical and kinetic energy.
What is the heat energy?Temperature energy is created by the movement of tiny particles, ions, or ions in solids, liquids, and gases. Additional heat can be passed between things. Heat is a flow or movement that happens when two objects have different temperatures from one another.
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a heat engine receives 20 kj of energy due to a temperature difference between itself and a hot reservoir. it also loses 12 kj through heat to the surroundings. at the same time, it produces 5 kj of work by being connected to a shaft. how much did this process change the internal energy of the engine? neglect any kinetic energy inside the engine. express your result in kj.
The internal energy of the engine has increased by 8 kJ (20 kJ - 12 kJ + 5 kJ).
This increase in internal energy is due to the energy gained from the heat reservoir and the energy lost to the surroundings, which is converted into useful work.
Internal energy is a measure of the total energy within a system, taking into account the kinetic and potential energies of the particles making up the system. The change in internal energy of a system is equal to the amount of heat added to the system, minus the amount of work done by the system.
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Q.1 a) Describe what a solar system is?
b. List the planets of the solar system?
c. Compare the inner planets with the outer planets in terms of:
i. Their moons and rings
ii. Their composition (what they are made of)
2. Describe how the planets of the solar system formed?
3. Suggest what would happen to the solar system if gravity was much stronger than it is?
which of the examples represent kinetic energy? riding a bicycle gasoline water behind a dam an apple falling from a tree wind a roller coaster at the top of a hill
Kinetic energy is present in every particle and moving object. Walking figures, flying balls, crumbs from tables, and charged particles in electric fields.
What three kinetic energies are there?Kinetic energy can be divided into three different subgroups: vibrational, rotation, and translational. Unsurprisingly, vibrating kinetic energy is produced when objects vibrate. Moving objects produce rotational kinetic energy, whereas items striking one another produce translational kinetic energy.
Does a falling apple from a tree have kinetic energy?An apple's energy of position, which is stored as gravitational potential, is transformed into kinetic energy, or energy of motion, as it falls from of the tree to the ground. Kinetic energy is converted to thermal energy when the apple strikes the ground.
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if you add three times the mass to one side of a pulley, does the system experience three times the acceleration as compared to just one object falling on a pulley system by itself? justify your answer.
No, the system will not experience three times the acceleration when three times the mass is added to one side of a pulley. The acceleration of a system is determined by the net force acting on it, which is equal to the mass of the system multiplied by its acceleration.
In the case of a pulley system, the net force on each side is equal to the gravitational force acting on the mass on that side, minus the tension force acting on it. Adding three times the mass to one side of the pulley will increase the gravitational force acting on that side, but it will also increase the tension force acting on it, which will counteract the increased gravitational force. As a result, the net force on the system will increase, but not by three times the amount. This will result in an increased acceleration, but not three times the acceleration.
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the value of x-ray and gamma-ray astronomy is based on the fact that some of the most energetic sources in the cosmos radiate at these wavelengths. magnetic storms in stellar atmospheres (including storms on the sun), exploding stars and their nebular remnants, the regions surrounding neutron stars and black holes, and the innermost regions associated with active galactic nuclei characterize the highest energy, shortest wavelength regime. what would you need to obtain a successful x-ray image of a high-energy source?
Option a&e: A high-temperature cosmic source and a telescope designed and built to be launched into space are required for a successful x-ray image of a high-energy source.
X-ray are electromagnetic waves, which are a type of radiation. Images of the inside of your body are produced by X-ray imaging. The images depict various parts of your body in black and white. This is due to the fact that different tissues absorb varying amounts of radiation. Because calcium in bones absorbs the most x-rays, they appear white. Fat and other soft tissues absorb less and appear grayer as a result. Because air absorbs the least amount, the lungs appear black.
X-rays are most commonly used to check for fractures (broken bones), but they are also used for other purposes. Chest x-rays, for instance, can detect pneumonia. Mammograms employ x-ray technology to detect breast cancer.
When having an x-ray, you may be required to wear a lead apron to protect certain areas of your body.
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The complete question is:
the value of x-ray and gamma-ray astronomy is based on the fact that some of the most energetic sources in the cosmos radiate at these wavelengths. magnetic storms in stellar atmospheres (including storms on the sun), exploding stars and their nebular remnants, the regions surrounding neutron stars and black holes, and the innermost regions associated with active galactic nuclei characterize the highest energy, shortest wavelength regime. what would you need to obtain a successful x-ray image of a high-energy source?
a) A cosmic source of high temperature.
b) A single large mirror to collect and focus the X-ray emission.
c) Careful observations from the ground.
d) A detector optimized for recording gamma rays.
e) A telescope designed and built to be launched into space.
just after an alien spaceship travels past earth at half the speed of light, a person on earth sends a beam of light past the ship in the same direction that the ship is traveling. how fast does an alien on the ship measure the light beam to be traveling as it zips past the spaceship?
An alien on the spaceship would measure the light beam traveling at the speed of light, or 300,000 km/s.
This is because the relative velocity of light is always constant and unaffected by the relative velocity of its source and observer.
Due to the special theory of relativity, which states that the laws of physics are the same for all observers in uniform motion relative to one another, and that the speed of light is a constant and unchanging value in all reference frames.
Therefore, no matter how fast the alien spaceship is moving, the speed of light will always appear to be the same to an observer on the ship. This is a fundamental principle that is widely accepted and confirmed by many experiments and observations.
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if the tension in the tow rope is 70.0 n , how much work does the rope do on the skier in 30.0 s ?
The work done by the rope on the skier in 30.0 seconds is equal to the tension in the rope multiplied by the distance the skier travels in that time , which is equal to 70.0 N x 30.0 m = 2100 J.
The work done by the rope on the skier can be calculated using the following equation:
Work = Force x Distancewhere force is the tension of the rope (70.0 N) and distance is the displacement of the skier in 30.0 s.
Calculate the displacement of the skier in 30.0 s.
Displacement = Velocity x Time
where velocity is the speed of the skier (unknown) and time is 30.0 s.
Calculate the work done by the rope on the skier.
Work = 70.0 N x 30.0 m = 2100 J.
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a block with mass rests on a wedge with mass and angle which lies on a table, as shown in the figure. all surfaces are frictionless. the block is constrained to move vertically by means of a wall on its left side. what is the acceleration of the wedge?
The acceleration of the wedge is found to be N1 sinФ + N-mg- N1cosФ /m.
What is the simple acceleration equation?The equation a = v/t denotes acceleration (a), which refers to the change in velocity (v) over the change in time (t). This lets you to determine the change in velocity in metres per second squared (m/s2). Although acceleration is a vector quantity, both its magnitude and its direction are all included.
When mass of block M is greater than mass of wedge m:
N1 => normal force act between block and wedge
a=> acceleration of the wedge
Hence, the force equation would be:
The wedge makes an angle Ф with the ground
N - mg - N1cosФ = 0
N1 sinФ = ma
a => N1 sinФ + N-mg- N1cosФ /m
Free fall of a block on a wedge is what?When a body is just exposed to gravity, it is in free fall. In this scenario, the wedge's normal force and gravitational force are the forces that act on the block. As a result, when the wedge's normal force is zero, the block will be dropping freely.
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in what ways can kinetic energy be measured? it can be measured in terms of the work blank . multiple select question. it was able to do before it started in motion the object will do in coming to rest done to place an object in motion the object could do once it comes to rest
Kinetic energy can be measured :
the object will do in coming to rest done to place an object in motion the object could do once it comes to restABOUT KINETIC ENERGYKinetic energy was discovered around the seventh century. According to the Physics LibreTexts page at that time, the science of mechanics has explained about plants between two objects where the first object moves, then the second object is in a state of rest.
When the first object moves, it bumps into a second object which is stationary and the first object stops moving. However, the second object, which was initially stationary, was moving with the first object's speed when it collided with the second object.
That is, there is a certain amount of energy transferred by the first object to the second object. Thus, the first object that was initially still becomes moving. From this, the idea of this energy was born.
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the mass of a car is 1200kg calculate the resultant force on the car required to produce an acceleration of 0.8m/s squared
The resultant force on the car with mass 1200kg required to produce an acceleration of 0.8m/s squared is 960 N
What is a resultant force?A resultant force is the total amount of force that is created as a result of multiple forces acting on an object. It is calculated by adding up all of the individual forces acting on the object. The resultant force can be used to calculate the acceleration of the object, as it is equal to the mass of the object multiplied by its acceleration.
By understanding the resultant force, the direction and magnitude of the forces necessary to produce a desired effect could be determined. This is particularly useful in engineering and physics, where knowing the forces involved in a situation can help us understand the dynamics of a system.
Calculation of Resultant ForceThe mass of a car =1200 kg and the acceleration of the object = 0.8 [tex]m/s^2[/tex].
The equation for calculating of Resultant Rorce is [tex]Mass \times Acceleration[/tex]
Resultant Force = [tex]1200 kg \times 0.8 m/s^2[/tex]
Resultant Force = [tex]960 N[/tex]
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what will happen if the positive and negative connections on the voltmeter are reversed?
A spring with a spring constant of 50 N/m is hanging from a stand. A second spring with a spring constant of 100 N/m is hanging from the first spring. How far do they stretch if a 0.50 kg is hung from the bottom spring?
Answer:
each spring will extend 0.049 m / 2 = 0.024 m.
Explanation:
The total spring constant of the two springs in series is 150 N/m (50 N/m + 100 N/m). The extension of the two springs can be calculated using Hooke's law:
F = kx
where F is the force applied to the spring (in this case, the weight of the 0.50 kg mass), k is the spring constant, and x is the extension of the spring.
So, x = F / k = (0.50 kg * 9.8 m/s^2) / 150 N/m = 0.049 m
This is the total extension of the two springs combined. To find the extension of each spring, we need to divide the total extension by the number of springs. Since there are two springs in series, each spring will extend 0.049 m / 2 = 0.024 m.
a rock is tossed straight up with a speed of 26 m/s. when it returns, it falls into a hole 14 m deep. ignore air resistance a. how long is the rock in the air, from the instant it is released until it hits the bottom of the hole? b. what is the rock's velocity as it hits the bottom of the hole?
The rock is in the air for 4.45 seconds, from the time it is released it until lands at the bottom of its hole.
What transpires when something is flung into the air?An object begins to fall freely when it is tossed up & reaches its highest point. Gravity is the force that pulls an item toward the Earth. As a result, even after an item stops moving due to gravity at its highest point, it can still accelerate.
A rock falls, but does it pick up speed?When something falls, gravity is the cause of the fall. That object experiences a force, which causes it to accelerate, increasing its fall velocity. the force of gravity, or how strongly the Moon pulls on anything.
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What happen to the force, if one masses is doubled, the other remains unchanged, and the distance of separation is tripled ?
The power of attraction will also double if the mass of one object doubles. But the tripled separation distance more than makes up for this impact. The force would be 9 times less when the distance was tripled (32).
What is Distance?Distance is the sum of an object's movements, regardless of direction. Distance can be defined as the total distance travelled by an object. An illustration. If an automobile drives 5 km east, then turns and drives 8 km further north, the total distance driven by the car is 13 km.
What is called distance and displacement?Distance is the length of an object's real route in its entirety. The displacement of an object between two points is defined as the straight line (shortest) distance between those two points when directed from one position to another. The metre is the SI unit for measuring distance and displacement (m). Displacement is just the distance between an object's starting point and its final location, whereas distance is the length of an object's path.
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if the charge on the particle is 19.2 mc and it takes 66.0 j of work to move the particle between a and b, what is the magnitude of the potential difference between points a and b?
Answer:
The potential difference between points A and B can be calculated using the equation V = W/Q, where V is the potential difference, W is the work done, and Q is the charge. In this case, W = 66 J and Q = 19.2 μC. Therefore, the potential difference is:
V = 66 J / 19.2 μC = 3.44 V.
factual knowledge: light microscopes typically have a set of three lenses, with different magnifying powers, that can be used to examine a sample. those lenses are called
"Light microscopes typically have a set of three lenses, with different magnifying powers, that can be used to examine a sample. those lenses are called objectives."
There are some parallels between compound microscopes and electron microscopes. Only light microscopes can magnify objects using light and lenses.
A light microscope is an instrument or apparatus used in biology labs that makes use of visible light to locate, expand, and magnify extremely minute objects. They focus light using lenses on the specimen, amplifying it to produce a picture. The specimen is often placed close to the small lens. The microscopic magnification is greatly influenced by the kinds and number of lenses used in the microscope.
The two types of microscopes based on the number of lenses used are simple light microscopes, which have low magnification due to the use of a single lens, and compound light microscopes use at least two sets of lenses, an objective lens and an eyepiece, increasing their magnification above basic light microscopes.
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unpasteurized fruit juice can be contaminated if there are pathogens in or on the fruit used to make it. T/F
It is untrue to say that unpasteurized fruit juice could be polluted if the fruit used to prepare it contains or is in contact with germs.
What is an example of contaminate?Chemicals had been used to contaminate [=pollute] the water. Take care to prevent bacterial contamination of the wound. Avoid touching the microchip as your hands' oil will taint it. Make sure that no other color have gotten on the white paint.
How does contamination happen?Food preparation on a place that still has residues on it or the use of cleaning agents in close proximity to exposed food can both result in contamination. Before food even enters the kitchen, it may become polluted by chemicals.
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When does potential energy of body is said to be positive or negative?
The potential energy of the body is said to be positive or negative regarding the chemical energy derived from foods, which is a type of potential energy.
What is the potential energy in the human body?The potential energy in the human body makes references to the energy at the rest state, conversely to the energy ignition which is called kinetic energy.
Therefore, with this data, we can see that the potential energy in the human body is based on the chemical bonds derived from the energy obtained from foods in normal conditions.
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suppose a gangster sprays superman's chest with 3 g bullets at the rate of 100 bulletslmin, and the speed of each bullet is 500 m/s. suppose too that the bullets rebound straight back with no change in speed. what is the magnitude of the average force on superman's chest?
Suppose a gangster sprays superman's chest with 3 g bullets at the rate of 100 bulletslmin, and the speed of each bullet is 500 m/s. suppose too that the bullets rebound straight back with no change in speed. The magnitude of the average force on Superman's chest is 83,333 N.
To calculate the average force on Superman's chest, we need to calculate the impulse (change in momentum) from the rebounding bullets and divide by the time over which that impulse was delivered.
Impulse = Force * Time
Time = total mass of bullets / rate at which bullets were sprayed
Time = 3g / (100 bullets/min) = 0.03 g-min/bullet
Time = 0.03 g * 60 s/min = 1.8 s
Impulse = (mass of one bullet * velocity of one bullet) * number of bullets
Impulse = (0.001 g * 500 m/s) * 300 bullets = 150,000 kg m/s
Force = Impulse / Time = 150,000 N / 1.8 s = 83,333 N
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pressure units named for the inventor of the barometer
It is frequently used to denote one millitorr (mTorr), also known as 0.001 Torr, in metric units. Evangelista Torricelli, the Italian physicist and mathematics who established the barometer's operating principle in 1644.
What is the purpose of a barometer?An device known as a barometer is used to determine atmospheric pressure, also known as barometric pressure. The air layers that surround Earth are known as the atmosphere.
What can you infer from a barometer reading?Weather forecasts are made using barometers. An air pressure gauge, or barometer When the barometer reads "rising," the air pressure is rising; when it reads "falling," the air pressure is lowering.
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ssume that the brakes in your car create a constant deceleration, regardless of how fast you arc going. if you double your driving speed, how does this affect (a) the time required to come to a stop, and (b) the distance needed to stop?
(a) If you double your driving speed, time required to come to a stop will be halved (b) the distance needed to stop will be quadrupled.
What is deceleration?Deceleration is defined as a decrease in velocity. Deceleration is slowing down. Negative acceleration is acceleration in the negative direction in the coordinate system. Negative acceleration may/ may not be deceleration and deceleration may /may not be negative acceleration.
If the brakes in a car create a constant deceleration, then time required to come to a stop is directly proportional to velocity, while the distance needed to stop is proportional to square of the velocity. So, if you double your driving speed, the time required to come to a stop will be halved, while the distance needed to stop will be quadrupled.
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did the electron move into a region of higher potential or lower potential?
When an electron moves from a point of higher potential to a point of lower potential, it releases energy. This energy can be used to do work, such as moving a current in a circuit, or to generate light or heat.
How electrical energy is generated and transmitted?The movement of electrons from higher to lower potential is a key aspect of how electrical energy is generated and transmitted. In a complete circuit, electrons will continue to flow from a point of higher potential to a point of lower potential until they reach a point of equal potential.
What do you mean by potential?Potential refers to the amount of energy an object has due to its position or state. For electric charges, the electric potential is a measure of the energy required to move a unit charge from one point to another.
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a large box is pushed 10 meters across a horizontal floor with a force of 20 n. how much work is done moving the box?
200 Joules is work done moving the box if a large box is pushed 10 meters across a horizontal floor with a force of 20 n.
The work done on an object can be calculated as the force applied on the object multiplied by the distance it moves in the direction of the force. In this case, the force applied on the box is 20 N and it is moved 10 meters, so the work done can be calculated as:
W = F * d
W = 20 N * 10 m
W = 200 J (Joules)
So, 200 Joules of work is done in moving the box 10 meters with a force of 20 N.
200 Joules is work done moving the box if a large box is pushed 10 meters across a horizontal floor with a force of 20 n.
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