when a p = 680 w ideal (lossless) transformer is operated at full power with an rms input current of i1 = 3.5 a, it produces an rms output voltage of v2 = 8.1 v.

Answer:

Energy stored in an object due to its position is Potential Energy. · Energy that a moving object has due to its motion is Kinetic Energy.

Explanation:

Answer:

To summarize, potential energy is the energy that is stored in an object due to its position relative to some zero position.

Holding a bow and arrow before shooting, The amount of energy stored before you race on track, And a roller coaster going to it's highest point staying there waiting to come down.

The magnetic force of a material comes from the spinning of electrons.

Electrons have a property known as spin, which creates a tiny magnetic field. When many electrons in a material are spinning in the same direction, their magnetic fields align and create a stronger magnetic force. This is because electrons have both charge and angular momentum, which are necessary for generating a magnetic field.
When electrons spin around the nucleus, they create tiny magnetic fields that can align with other nearby magnetic fields, resulting in a net magnetic force.

The nucleus, neutron, and photon do not have a magnetic field created by their spin. Nuclei and neutrons are composed of particles called quarks, which do not have a magnetic field. Photons are particles of light and do not have a charge or spin.

In summary, electrons are responsible for the magnetic force of a material because they have a property called spin, which creates a magnetic field.

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Starting conditions in a protogalactic cloud can lead to the formation of an elliptical galaxy if the cloud begins with a high angular momentum or a lack of cold gas.

High angular momentum: If the protogalactic cloud has a high angular momentum, it will lead to the formation of a rapidly rotating disk. However, if there are significant mergers or interactions with other galaxies, the angular momentum can be transferred to the surrounding environment, causing the disk to lose its rotational motion and become more spheroidal or elliptical in shape. This process is known as angular momentum redistribution. Lack of cold gas: Elliptical galaxies are generally devoid of active star formation and have a lower abundance of cold gas compared to spiral galaxies. If the protogalactic cloud lacks a sufficient amount of cold gas, it will hinder the formation of new stars and result in an elliptical galaxy. This could be due to various factors such as a low initial gas content, strong galactic winds, or intense feedback from massive stars, which expel gas from the system. These two scenarios highlight how the initial conditions of a protogalactic cloud, specifically the angular momentum and the presence of cold gas, play crucial roles in determining whether it will evolve into an elliptical or a spiral galaxy.

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The kinetic energy of the electron just as it reaches the positive plate is \(6 * 10^{-15} J\)

1.55 cm, or 0.015 metres, separates the plates=d

E = the size of the electric field between the capacitor's plates=\(2.5 * 10^{6} V/m\)

q is the size of the electron's charge= \(1.6 *10^{-19} C\)

Electric field-induced force on the electron is expressed as

\(F = q EF = (1.6 * 10^{-19}) (2.5 *10^{6})F = 4 * 10^{-13 }N\)

Initial electron kinetic energy at the negative plate is 0 J, or KE₀

Final electron kinetic energy at a positive plate is expressed as KE

Using work-change in kinetic energy

F d = KE - KE₀

\((4 * 10^{-13}) (0.015) = KE - 0\)

\(KE = 6 * 10^{-15} J\)

As a result, the electron's kinetic energy shortly before it encounters the positive plate is \(6 * 10^{-15} J\)

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Answer:

it yields a derived unit known as Newton, which is the unit of Force.

Explanation:

The formula for force is given by Newton's Second Law, which states that whenever an unbalanced force is applied to a body, it produces an acceleration in the body in the direction of force.

\(F = ma\\\)

where, F = Force

m = mass

a = acceleration

Now, we substitute the respective S.I units of each quantity in equation:

F = Newton (N)

m = kilogram (kg)

a = acceleration = m/s²

Therefore,

\(N = (kg)(m/s^2)\)

So, it is clear from above expression that:

When kilogram is multiplied by meter per second squared, it yields a derived unit known as Newton, which is the unit of Force.

Answer: if every arrow=1m do 1 times 1 times 1 times 1

Explanation:

(p.s. it equals 1 meter in area 4 meters in perimeter)

The frictional force reduces the block's kinetic energy and causes negative work to be done on it.

Kinetic energy is the energy that a thing has when it is moving. An item can only be accelerated through the application of a force. Applying force requires effort on our part. Following completion of the work, energy is transferred towards the object, which then moves at such a new, constant speed.

Kinetic energy appears to be the driving force behind motion, as evidenced by the way objects and subatomic particles move. Every particle & moving object contains kinetic energy. Examples of kinetic energy in motion include walking, a baseball flying through the air, food falling off a table, and just a charged particle within an electric field.

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Answer:

The answer is True!

Answer:

Requirements to become an Osteologist

Explanation:

After completing the bachelor's degree, students should begin working towards a master's degree or Ph. D specializing in forensic anthropology. Forensic anthropology is closely related to osteology and it will help in the forensic work.

Answer:

Well this would be science... not physics...

Explanation:

1) both are a product of cooling lava/magma

2) Both stones can be caused during volcanic eruptions or clastic flow

3) Both are igneous in family (duh)

4) Intrusive rocks are formed underground from seeping into crevasses and are slow cooling and extrusive rocks are fast or instant cooling and cool above the surface (if differences are needed)

(a) Using conservation of energy, the velocity of the ball at the top of the ramp is 3.9 m/s.
(b) When the height of the ramp is 1 m, the ball does not make it to the top of the ramp

Given,

Height of the ramp, h = 0.75 m
Initial velocity of the center of mass, u = 4.2 m/s

(a) What is its velocity at the top of the ramp?

The bowling ball rolls up a ramp of height 0.75 m without slipping to storage, and it has an initial velocity of its center of mass of 4.2 m/s. It is asked to determine the velocity of the ball at the top of the ramp.
Let the velocity of the ball at the top of the ramp be v.
By the law of conservation of energy, the potential energy of the ball at the bottom of the ramp is equal to the kinetic energy of the ball at the top of the ramp.
PE at the bottom of the ramp = KE at the top of the ramp

mgh = (1/2)mu² + (1/2)Iω²

where
m = mass of the ball
g = acceleration due to gravity
I = moment of inertia of the ball
ω = angular velocity of the ball

Assuming the ball is a solid sphere,

I = (2/5)mr²

where r is the radius of the sphere
At the bottom of the ramp,
PE = mgh
At the top of the ramp,
KE = (1/2)mu² + (1/2)(2/5)mu²
Substituting the given values,
PE = mgh = 0.75mg
KE = (1/2)mu² + (1/2)(2/5)mu²
= (1/2)(7/5)mu²
= (7/10)mu²

At the top of the ramp,

PE = KE
0.75mg = (7/10)mu²
v = u * √(7/10)
= 4.2 * √(7/10)
≈ 3.9 m/s

Therefore, the velocity of the ball at the top of the ramp is approximately 3.9 m/s.

(b) If the ramp is 1 m high does it make it to the top?

When the height of the ramp is 1 m,
PE = mgh = 1mg
At the top of the ramp,
KE = (1/2)mu² + (1/2)(2/5)mu²
= (1/2)(7/5)mu²
= (7/10)mu²

At the top of the ramp,

PE = KE
1mg = (7/10)mu²
u² = (10/7)gh
v = u * √(7/10)
= √(10gh/7)
≈ 3.96 √h m/s

Therefore, when the height of the ramp is 1 m, the ball does not make it to the top of the ramp.

Using the law of conservation of energy, the velocity of the ball at the top of the ramp is found to be approximately 3.9 m/s. When the height of the ramp is increased to 1 m, the ball does not make it to the top of the ramp.

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The solution is (v, u) = (- 585.709, 593,034). Please notice that the value of v only means that the direction of the real vector is antiparallel to the supposed one.

According to the definition of vector sum and vectors in rectangular form, we must solve the following vector equation:

(0, 0) = 205 · (cos 23°, - sin 23°) + v · (- cos 75°, sin 75°) + u · (- cos 55°, - sin 55°)

(0, 0) = (188.703, 80.100) + v · (- 0.259, 0.966) + u · (- 0.574, 0.819)

(- 188.703, - 80.100) =  v · (- 0.259, 0.966) + u · (- 0.574, 0.819)

Then, we must solve the following system of linear equations:

- 0.259 · v - 0.574 · u = - 188.703

0.966 · v + 0.819 · u = - 80.100

The solution is (v, u) = (- 585.709, 593,034). Please notice that the value of v only means that the direction of the real vector is antiparallel to the supposed one.

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Human roles in energy transition are:

By taking these steps, you can actively contribute to the energy transition and be a part of the movement toward a more sustainable and clean energy future.

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Answer:

220 seconds

Explanation:

Jess wants to make her house more energy efficient. Insulating her loft, which will cost £460 and save £25 per year, is better long-term option. Therefore, option B is correct.

In order to accomplish work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is the quantitative attribute that does this. Energy is a preserved resource; according to the rule of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed.

Computers, vehicles, communications, state-of-the-art medical technology, and many other things are all powered by energy. The demand for dependable and economical energy is especially pressing for emerging countries. It may enhance things or perhaps save lives.

A turbine generator set transforms mechanical energy into electrical energy to produce electricity. Natural gas, coal, nuclear fission, biomass, petroleum, geothermal, and solar thermal are examples of energy sources where the heat generated is used to produce steam.

Thus, option B is correct.

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Double-slit time diffraction at optical frequencies is a phenomenon where light is passed through two narrow slits that are placed close together.

As the light waves pass through the slits, they interfere with each other and create an interference pattern on a screen placed behind the slits. This pattern is created due to the diffraction of light waves, which causes them to bend around the edges of the slits and interfere with each other.

This phenomenon is particularly important in optics, as it allows us to study the behavior of light waves and their interaction with matter.

 Double-slit diffraction at optical frequencies refers to the interference pattern produced when light waves of optical frequencies pass through two closely spaced slits. The pattern results from the superposition of light waves, creating areas of constructive and destructive interference, which correspond to bright and dark bands respectively. This phenomenon demonstrates the wave nature of light and is a fundamental concept in the study of optics and wave physics.

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We have detected planets in the habitable zone s not evidence against the discussion of the Fermi Paradox. Option B is correct.

The fp discussion refers to the Fermi Paradox, which is the apparent contradiction between the high probability of the existence of extraterrestrial civilizations and the lack of evidence for, or contact with, such civilizations. The presence of exoplanets in the habitable zone is actually evidence supporting the discussion of the Fermi Paradox, which asks why we haven't detected any signs of intelligent extraterrestrial life despite the high probability of its existence.

As the inability to observe exoplanets around most stars does not necessarily imply a contradiction with the Fermi Paradox. In fact, this limitation can be accounted for by understanding our observational capabilities and taking into account non-detections in our analysis. Option B is correct.

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The amount of force that provides an acceleration of 35m/s² with a mass of 80,000kg is 2,800,000N.

HOW TO CALCULATE FORCE:

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Answer:

An electric bell is placed inside a transparent glass jar. The bell can be turned on and off using a switch on the outside of the jar. A vacuum is created inside the jar by sucking out the air. Then the bell is rung using the switch. What will we see and hear?

A.

We’ll see the bell move, but we won’t hear it ring.

B.

We won’t see the bell move, but we’ll hear it ring.

C.

We’ll see the bell move and hear it ring.

D.

We won’t see the bell move or hear it ring.

E.

We’ll see the sound waves exit the vacuum pump.

Explanation:

so, the answer to the question is

A.

We'll see the bell move, but we won’t hear it ring.

Answer:

A.

We’ll see the bell move, but we won’t hear it ring.

Explanation:

Sound waves need a medium to travel and cannot travel in vaccuum

Answer: the velocity is -2

Explanation: good luck don't think its wrong everyone calls me the human calculator

There is a 9000N force was exerted on the roller coaster to bring it to a stop. Option D.

Forces are influences that can change the movement of an object. A force can cause a mass to accelerate, thus changing its velocity. Forces can also be described intuitively by pushing or pulling. The word "force" has a precise meaning.

At this level, it is appropriate to describe the force as pushing or pulling. A force does not contain or have within an object. A force is applied from one object to another. The idea of ​​force is not limited to animate or inanimate objects.

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Answer:

yes,  majority of the weight will be supported by the front wheel and not by you.

Explanation:

Answer:

in earth

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Answer:

B. in the Earth

Explanation:

Fossil fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy.

Brainlist pls!

Answer: Approximately 22 cm

=========================================================

Explanation:

The unstretched spring is 12.0 cm long. When adding a load of 5.0 N, it stretches to 15.0 cm. This is a displacement of 15.0 - 12.0 = 3.0 cm, which is the amount the spring is stretched.

Convert this displacement to meters (so that it fits with the meters unit buried in Newtons).

3.0 cm = (3.0)/100 = 0.03 m

Apply Hooke's Law to find the spring constant k

F = -kx

5.0 = -k*(0.03)

k = -(5.0)/(0.03)

k = -166.667 approximately

Now we must find the displacement x when F = 15 newtons

F = -kx

-kx = F

x = F/(-k)

x = -F/k

x = -15/(-166.667)

x = 0.089 approximately

x = 0.1

The displacement to one decimal place is about 0.1 meters, which converts to 100*0.1 = 10 cm

So the spring will be stretched to about 12cm+10cm = 22 cm

The total displacement of the toy car at the given positions is 0.

The given parameters;

The total displacement of the car is calculated as follows;

\(\Delta x = - \ 5\ cm \ + \ 8 \ cm \ - \ 3 \ cm \\\\\Delta x = 0\)

Thus, the total displacement of the toy car at the given positions is 0.

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Answer:0

Explanation: