which parts of an electric generator are connected

Answer:

its B

Explanation:

Answer:

Math Skills Calculating Kinetic Energy and Potential Energy ... moving object depends on its mass and speed. ... represents the object's speed, measured in meters per second (m/s). ... Example 1: A bicycle and rider with a combined mass of ... the bicycle and rider? Given: m = 110 kg v = 8 m/s. Unknown: Kinetic energy (KE).

I think

Explanation:

The kinetic energy of a bicycle and rider with a combined mass of 110 kilograms traveling at a speed of 8 meters per second is 3520 joules, calculated using the formula KE = ½ mv².

The kinetic energy of an object can be calculated using the formula KE = 1/2 mv^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity of the object.

In this case, the combined mass of the bicycle and rider is 110 kg and the velocity is 8 m/s.

Substituting these values into the formula, we get KE = 1/2 (110 kg) (8 m/s)^2 = 3520 J.

The student's question pertains to calculating the kinetic energy of a bicycle and rider with a known mass and speed. The formula to find kinetic energy (KE) is KE = ½ mv², where 'm' is mass and 'v' is velocity.

To compute the kinetic energy for the given mass of 110 kilograms and velocity of 8 meters per second, we substitute these values into the formula:

KE = ½ (110 kg) × (8 m/s)²

KE = 55 kg × 64 m²/s²

KE = 3520 joules

Thus, the kinetic energy of the bicycle and rider is 3520 joules.

Answer:

The velocity of the composite body is 0.99m/s 63.43° west of north.

Explanation:

Here the law of conservation of energy says that

[tex](1).\: \: m_1v_1cos(0)+m_2v_2cos(90^o)=(m_1+m_2)v_f cos(\theta)[/tex]

[tex](2).\: \: m_1v_1sin(0)+m_2v_2sin(90^o)=(m_1+m_2)v_f sin(\theta)[/tex]

where [tex]v_f[/tex] is the final velocity if the composite body, and [tex]\theta[/tex] is measured from west of north.

Putting in numbers and simplifying the above equation we get:

[tex](3).\: \: m_1v_1=(m_1+m_2)v_f cos(\theta)[/tex]

[tex](4).\: \: m_2v_2=(m_1+m_2)v_f sin(\theta)[/tex]

dividing equation (4) by (3) gives

[tex]\dfrac{ m_2v_2=(m_1+m_2)v_f sin(\theta)}{ m_1v_1=(m_1+m_2)v_f cos(\theta)}[/tex]

[tex]\dfrac{m_2v_2}{m_1v_1} = \dfrac{sin(\theta)}{ cos(\theta)}[/tex]

[tex](5).\: \: tan(\theta) = \dfrac{m_2v_2}{m_1v_1}[/tex]

putting in [tex]m_1 = 0.5kg[/tex], [tex]v_1 = 4m/s[/tex], [tex]m_2 = 4kg[/tex], and [tex]v_2 = 1m/s[/tex] we get:

[tex]tan(\theta) = \dfrac{(4kg)(1m/s)}{(0.5kg)(4m/s)}[/tex]

[tex]\boxed{\theta = 63.43^o}[/tex]

Thus, the final velocity [tex]v_f[/tex] we get from equation (3) is:

[tex]v_f=\dfrac{m_1v_1}{(m_1+m_2)cos(\theta)}[/tex]

[tex]v_f=\dfrac{(0.5kg)(4m/s)}{(4kg+0.5kg)cos(63.43^o)}[/tex]

[tex]\boxed{v_f = 0.99m/s}[/tex]

Thus, the velocity of the composite body is 0.99m/s 63.43° west of north.

Answer:

Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion.

Explanation:

Final answer:

Elements in stars are formed through nuclear fusion, where hydrogen fuses into helium. Stars with masses above 8 solar masses can create elements up to iron through nucleosynthesis.

Explanation:

Elements are formed in stars through the process of nuclear fusion. This occurs when a star's core temperature exceeds 10 to 12 million K, allowing hydrogen nuclei to fuse into helium - a stage known as hydrogen burning. As stars evolve, those with masses greater than about 8 solar masses undergo nuclear reactions involving carbon, oxygen, and other elements, synthesizing new elements up to iron, a process known as nucleosynthesis. In late stages of a star's life, massive stars either explode as supernovae or shed their outer layers, ejecting these heavy elements into interstellar space.

The ejected matter then becomes part of the raw material for new star formation, leading to successive generations of stars with higher proportions of these heavy elements. The elements that are essential to life on Earth, such as carbon, oxygen, nitrogen, and iron, were produced in the cores of stars or the dramatic finale of supernovae. Meanwhile, lighter elements like lithium, beryllium, and boron are less abundant when compared to heavy elements such as iron in stars, indicating that heavier elements are built up over time through stellar processes.

Answer: 552.5 watts

Explanation:

Given that,

Weight of man = 956 N

Height (h) = 2.41 m

Time taken (t) = 4.17 seconds

Power = ?

Recall that power is the rate of work done per unit time i.e Power = work/time

Thus, power = (mgh) / t

(Since weight = mass x acceleration due to gravity)

Power = (weight x height)/ time

Power = (956N x 2.41 m) / 4.17s

Power = 2303.96/4.17

Power = 552.5 watts

Thus, 552.5 watts of power is generated.

Answer:

mgh₁ + ½mv₁² = mgh₂ + ½mv₂²

Explanation:

Initial total energy = final total energy

PE₁ + KE₁ = PE₂ + KE₂

mgh₁ + ½mv₁² = mgh₂ + ½mv₂²

Answer:

953.7 J

Explanation:

The average translational kinetic energy of the molecules in a gas is given by

[tex]KE=\frac{3}{2}kT[/tex]

where

[tex]k=1.38\cdot 10^{-23} J/K[/tex] is the Boltzmann constant

T is the absolute temperature of the gas

Here we have:

[tex]T=6^{\circ}C+273=279 K[/tex] is the absolute temperature of the gas

Therefore, the average translational kinetic energy of each molecule is:

[tex]KE=\frac{3}{2}(1.38\cdot 10^{-23})(279)=5.78\cdot 10^{-21} J[/tex]

Now in order to find the total translational kinetic energy of all molecules, we have to find the number of molecules in the gas.

We can do it by using the equation of state for an ideal gas:

[tex]pV=nRT[/tex]

where here:

p = 2.5 atm is the gas pressure

V = 2.5 L is the volume

[tex]R=0.082J/mol K[/tex] is the gas constant

[tex]T=279 K[/tex] is the temperature

Solving for n, we find the number of moles:

[tex]n=\frac{PV}{RT}=\frac{(2.5)(2.5)}{(0.082)(279)}=0.273 mol[/tex]

So the number of molecules contained in this gas is:

[tex]N=nN_A=(0.273)(6.022\cdot 10^{23})=1.65\cdot 10^{23}[/tex]

where [tex]N_A[/tex] is Avogadro number. Therefore, the total translational kinetic energy in the gas is:

[tex]KE_{tot}=N\cdot KE = (1.65\cdot 10^{23})(5.78\cdot 10^{-21})=953.7 J[/tex]

Final answer:

The total translational kinetic energy of 2.5 L of oxygen gas at 6 degrees Celsius and 2.5 atm pressure can be found by first calculating the number of moles using the ideal gas law, then using Boltzmann's constant to find the average kinetic energy per molecule, and finally multiplying by Avogadro's number and the number of moles.

Explanation:

To calculate the total translational kinetic energy of 2.5 L of oxygen gas at 6
degrees Celsius (which is 279 K) and a pressure of 2.5 atm, we can use the ideal gas law and the equation for the average kinetic energy per molecule. First, we need to find the number of moles of oxygen using the ideal gas law PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant (8.314 J/(mol*K)), and T is the temperature in Kelvin.

Converting the volume from liters to cubic meters (1L = 0.001 m³) and pressure from atm to Pa (1 atm = 1.01325 × 10⁵ Pa), we get:

V = 2.5 L = 0.0025 m³

P = 2.5 atm = 2.5 × 1.01325 × 10⁵ Pa

The number of moles (n) can be calculated as follows:

n = PV / RT

Now, using Boltzmann's constant (k) of 1.38 × 10⁻²³ J/K, we can find the average translational kinetic energy per molecule at this temperature using the formula provided:

kBT = (1.38 × 10⁻²³ J/K)(279 K)

To find the total translational kinetic energy, we must multiply the average kinetic energy per molecule by Avogadro's number (6.022 × 10²³ mol-1) and then by the number of moles we found earlier.

Answer:

the current is flowing to the left

the magnetic field is flowing out of the bottom of the screen

the screen and into the top of the screen.

Explanation:

Final answer:

A static electric charge can be released as a spark, a brief and intense discharge of electrical energy that occurs when the accumulated charge overcomes resistance of the insulating medium.

Explanation:

A static electric charge can be released as a spark. Static electricity is the accumulation of electric charge on the surface of an object, and this arrangement of charge remains static until it finds a pathway to discharge. When static charge accumulates to a sufficient level, it can overcome the dielectric (insulating) medium separating it from a neighboring conductor or the ground. At that point, the charge can suddenly move towards the conductor, releasing energy in the form of a spark that can also create light and heat. This is analogous to what happens in a spark plug of a gas engine, where a high electric field is created to ignite the fuel-air mixture or like the sudden discharge of lightning from storm clouds.

The option suggesting the release of a gas is incorrect as the discharge does not involve the creation of new chemical substances like a gas, but rather the movement of existing charge. Also, while the spark can generate heat, it is not solely released as heat, and it does not constitute a continuous current because it is a quick, transient event.

Answer:

b. they can be observed and measured

Explanation:

Matter is anything that has weight and occupy space. There are three states of matter namely Solid, liquid and gas.

The properties of matter are both physical and chemical in nature. Both properties can be measured and observed. Phhysical properties are anything that can be measured without changing the state of the matter. Example of physical properties includes mass, volume, length, color etc.

Chemical properties is another properties of matter. This is the ability of the states of matters to combine with other substance to form a new product for example, rusting of iron, formation of salt etc.

All this as discussed are both measurable and can be observed.

Answer: 20 newtons

Explanation:

Given that:

Force applied by Samantha = 10 newtons

Force applied by Emily = 10 newtons

Direction of both forces = same

Net force of their efforts = ?

Since net force of forces applied in the same direction is obtained by adding up the seperate forces applied, then

Net force = (10 newtons + 10 newtons)

Net force = 20 newtons

Thus, the net force of their efforts is 20 newtons.

Answer:

True

Explanation:

Answer:

C. 23

Explanation:

The mass is made up by the proton and nuetrons,

12+11=23 your atomic mass

Answer:

nonpolar

Explanation:

Because no polar is a molecule like cholesterol

Non-polar solute is least likely to dissolve in water. So, the correct option is (C).

A polar solute is defined as one that dissolves only in a polar solvent such that water is a polar solvent and polar solute can readily dissolve in water while non polar solute is defined as a molecule whose constituents There is no net charge on the atoms where non-polar solvents such as organic solvents dissolve non-polar molecules, as in some organic compounds.

Polar solutes molecules are the molecules with polar bonds are usually asymmetrical while Non-polar molecules are the molecules with non- polar bonds which are usually symmetrical.

Thus, Non-polar solute is least likely to dissolve in water. So, the correct option is (C).

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Answer:

B) Energy

Explanation:

According to Newton's law, the incorrect statement is "for every action, there is an equal reaction perpendicular to the direction of the force". Therefore, option C is correct.

This statement does not accurately represent Newton's third law of motion. Newton's third law states that "For every action, there is an equal and opposite reaction." The reaction force is equal in magnitude but opposite in direction to the action force, not necessarily perpendicular to it.

These laws describe the relationships between the motion of objects and the forces acting upon them. They are foundational concepts in the field of classical mechanics and provide a framework for understanding how objects move and interact with one another. Therefore, option C is correct.

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Answer:

C. An object with a negative electric charge.

Final answer:

An object with a positive electric charge will be attracted to an object with a negative electric charge. This is due to the principle that unlike charges attract each other, which is governed by Coulomb's law. So the correct option is C.

Explanation:

An object with a positive electric charge will be attracted to an object with a negative electric charge. According to the principles of electrostatics, like charges repel, and unlike charges attract each other. When you have two objects, one positively charged and the other negatively charged, the electrostatic force between them will cause them to move towards one another. This attraction is explained by Coulomb's law, which states that the force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

An object with no electric charge, or a neutral object, can also be attracted to a charged object because of polarization that occurs when the charged object is brought near. The electric field of the charged object causes the charges in the neutral object to rearrange, creating a region with a slight excess of charge that is opposite to that of the charged object, leading to an attractive force. However, two positively charged objects would repel each other, as would two negatively charged objects.

Answer:

40 A, current is from B to A

Explanation:

The current in a wire is defined as:

[tex]I=\frac{q}{t}[/tex]

where

q is the amount of charge passing a given point of the wire in a time interval t

The charge passing through a given point can be written as

[tex]q=Ne[/tex]

where

N is the number of electrons

[tex]e=1.6\cdot 10^{-19}C[/tex] is the charge of one electron

So we can rewrite the equation as

[tex]I=\frac{Ne}{t}[/tex]

In this problem:

[tex]N=25\cdot 10^{21}[/tex] is the number of electrons

t = 100 s is the time interval

Substituting, we find the current:

[tex]I=\frac{(25\cdot 10^{21})(1.6\cdot 10^{-19})}{100}=40 A[/tex]

Moreover, the direction of a current is defined as the direction of positive charges moving. Here, the charge carriers are electrons (which are negatively charged), so the direction of the current is opposite to the direction of motion of the electrons: therefore, since the electrons move from A to B, the direction of the current is from B to A.

The answer is B - Current Y has a greater potential difference, and the charges flow at a slower rate.

I just took the quiz

The current X and Y share the relationship where Current Y has a greater potential difference, and the charges flow at a slower rate. Option B

Generally, a flow of electricity is caused by the directed movement of electrically charged particles.

In conclusion, for a  3-column table with 2 rows titled Electric Currents. The first column labeled Current has entries X, Y. we say that Current Y has a greater potential difference, and the charges flow at a slower rate.

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Answer:

3.26156 thats the answer i would go with b

Explanation:

Answer:

b.) 3

Explanation:

There are approximately 3.261 light years in a parsec

Answer:

Direct sunlight reaches the Earth's surface when there is no cloud cover between the sun and the Earth, while cloud cover causes indirect sunlight to reach the surface. In gardening, sunlight falling directly on the plant is direct sunlight, while indirect sunlight refers to shaded areas.

Explanation:

The Sun's rays can be either direct or indirect based on the Earth's rotation and tilt on its axis. The rays are more direct when the Earth tilts towards the Sun causing summer, and more indirect when the Earth tilts away from the Sun, causing winter.

The Sun's rays can be direct or indirect based on the rotation and tilt of the Earth on its axis. When the Earth's tilt angles towards the Sun, the rays hit the Earth more directly, typically causing summer. On the other hand, when the Earth's tilt angles away from the Sun, the rays have to pass through more of the Earth's atmosphere because they are coming in at an angle, so these rays are more indirect, causing winter. In simple words, whether the Sun's rays are direct or indirect is primarily caused by the way Earth tilts and rotates around the Sun.

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The three components used to a light bulb to light is wire, light bulb, and battery(power supply)

Explanation:

Answer:

A. Carnivores

Explanation:

Frogs, hawks, and lions are all carnivores. Thus, the correct option for this question is B.

Carnivores may be characterized as animals or organisms that typically eat the meat or flesh of other animals or a plant that traps and digests insects or other small animals. Some examples of carnivores may include lions, eagles, leopards, polar beer, frogs, etc.

Carnivorous animals have specialized dentition to hunt and kill prey. Some carnivorous animals such as chameleons and a few species of frogs have long sticky tongues to catch prey. Most carnivores are usually fast as they need to chase and tire their prey. Carnivores are also known as predators.

Organisms like grasshoppers, goats, horses, rabbits, deer, etc. are categorized under the category of herbivores as they only eat plants and their derived products.

Therefore, frogs, hawks, and lions are all carnivores. Thus, the correct option for this question is B.

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Answer: Height

Explanation:

Height is the term that refers to the vertical distance from the bottom to the topmost part of any object. i.e

- a person height tells how tall he/she is,

- a building height tells the distance from ground level to the highest part.

Hence, height is measured in metres.

Answer: 45000kgm/s

Explanation:

Given that:

Mass of speed boat = 1500 kg

Velocity of speedboat = 30 m/s

Speed boats Momentum = ?

The Speed boat momentum is the product of its mass and the velocity by which it moves. Momentum is a vector quantity and measured in kgm/s

i.e Momentum = mass x velocity

= 1500 kg x 30 m/s

= 45000kgm/s

Thus, the speed boats momentum is 45000kgm/s

Answer:

the answer is b

Explanation:

The force that accelerates the car is the static friction force.

Acceleration is a rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down.

According to the condition,

When the car is accelerating, it will move in the direction of the net force. this is because the force of the engine is large enough to overcome the forces of friction and air resistance.

However, objects do not always move in the direction of the net force.

To accelerate something, there needs to be a force from the outside. For the car accelerating from rest, the only thing acting on it in the forward direction is the friction due to the ground.

The force that accelerates the car is the static friction force. It is the only external force acting forward on the car and is therefore responsible for its acceleration per Newton's second law.

That force is the equal and opposite reaction to the force the wheel exerts backward on the ground per Newton's third law.

The below diagram shows the exact answer.

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Answer: B,C,F

Explanation:

the picture of proof

Answer:

b c f is right

Explanation:

Final answer:

A car traveling at 120 km/h will have 9 times more kinetic energy than if it were traveling at 40 km/h, due to the kinetic energy being proportional to the velocity squared.

Explanation:

When a car is traveling 120 km/h, it will have 9 times more kinetic energy than if it were traveling at 40 km/h. This is because kinetic energy (KE) is proportional to the square of the velocity (v), as represented by the formula KE = 1/2 mv².

Given that the speed increases from 40 km/h to 120 km/h, which is a factor of 3 (120/40 = 3), and knowing the square relationship, we square this factor (3² = 9) to find that the kinetic energy increases by a factor of 9. Thus, a car traveling at 120 km/h has 9 times the kinetic energy of the same car traveling at 40 km/h, illustrating the substantial impact of speed on kinetic energy.