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two identical thin lenses with the same focal length, f, are placed 40.0 cm apart. an object placed 30.0 cm in front of the first lens has an image exactly halfway between the lenses, which serves as the object for the second lens. at what distance behind the second lens is its image? Di

Inertia is the property of matter that resists changes in motion, and when two skaters push against each other, the speed of the first is the same as the speed of the second.

The statement "If two skaters standing still push against each other, the speed of the first is the same as the speed of the second, and in the opposite direction ONLY if both people have the same mass" is false. Inertia is the tendency of a body to remain at rest or in uniform motion in a straight line, as defined by Newton's first law of motion. When two skaters of unequal mass stand still and push against each other, the heavier skater will move the lighter skater, and both skaters will have different velocities. The principle of conservation of momentum governs this action, so the statement is only accurate if the masses of both skaters are equal.

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The value of the acceleration is 0.76 m/s² and the total time taken by the vehicle is 39 seconds.

The acceleration of the vehicle before coming to rest is calculated as follows;

v² = u² + 2as

where;

the car came to rest with constant velocity attained after 12 seconds.

the initial velocity of the car before 12 seconds is zero.

v² = 0 + 2as

a = v²/2s

a = (10²)/(2 x 66)

a = 0.76 m/s²

d = ut + ¹/₂at²

where;

580 = 0 + ¹/₂(0.76)t²

580 = 0.38t²

t² = 580/0.38

t² = 1,526.3

t = √1,526.3

t = 39 seconds

Thus, the value of the acceleration is 0.76 m/s² and the total time taken by the vehicle is 39 seconds.

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Answer:

Make cathode-ray tubes with various materials and see whether the beam should be the same.

Explanation:

The process of learning is a complex and multi-faceted activity that involves numerous factors such as motivation, attention, memory, and problem-solving.

One of the key components of effective learning is the ability to manage one's own cognitive processes or metacognition. Metacognition refers to an individual's awareness and understanding of their own thinking processes and strategies, as well as their ability to monitor and regulate their own learning.

Effective metacognitive strategies include setting goals, planning and organizing information, monitoring one's own comprehension, and evaluating learning outcomes.

These strategies can be taught and learned, and they can significantly enhance learning and academic performance.

Additionally, metacognitive strategies can help learners to identify and address areas of weakness or challenge, such as difficulties with attention or memory, and develop more effective learning strategies to compensate.

In summary, metacognition is an essential component of effective learning. By developing awareness and control of their own thinking processes, learners can improve their academic performance, identify and address areas of challenge, and become more effective and efficient learners.

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Spectral shifts are caused by the movement of the spectrum to shorter wavelengths, while the Big Bang Theory is supported by spectra analyses because we can determine how spectra of electromagnetic radiation from stars changes depending on their relative position.

The Big Bang Theory is a widely accepted model in physics about the boring of the Universe, which it is believed occurred though a big explosion, while light spectra refers to the observation of the electromagnetic radiation emitted by stars.

Therefore, with this data, we can see that the Big Bang Theory obtains supportive evidence from the emission of electromagnetic spectra of stars.

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Answer: I am sorry but I don't know what you're trying to say.

Explanation: Hope

Answer:

C. Potential energy is related to an object's position, and kinetic

Explanation:

The energy contained in the small motions of the object's molecules can be broken up into a combination of microscopic kinetic energy and potential energy.

Answer:

c. potential energy is related to an object's position, and kinetic energy is related to its motion

Explanation:

Answer: 0.3

Explanation: Jusy took it and got a 100

Answer: 0.3

Explanation: This is right trust me I answered this and it was correct!!

The swimmer develops approximately 24.2 watts of power while moving through the water at a speed of 0.22 m/s, against a drag force of 110 N.

This power represents the rate at which work is done or energy is transferred.

To calculate the power developed by the swimmer, we can use the formula: power = force × velocity. In this case, the force opposing the swimmer's motion is the drag force of 110 N, and the velocity is 0.22 m/s.

By substituting these values into the formula, we can find the power.

Power = 110 N × 0.22 m/s = 24.2 watts.

Therefore, the swimmer generates approximately 24.2 watts of power while moving through the water at a speed of 0.22 m/s against a drag force of 110 N. This power output indicates the swimmer's ability to overcome resistance and maintain their speed in the water.

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A horizontal line, not on the x-axis.

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A system that can be affected by the outside environment, by an exchange of matter or energy is an open physical system .

Motion is created by kinetic energy. K.E. = 1/2 mv2 can be used to calculate an object's kinetic energy.

Motion is the change in an object's location with relation to time. Motion is described mathematically using terms like displacement, velocity, distance, kinetic energy, and speed.

Kinetic energy is essentially the energy underlying motion and can be observed in the movement of objects or subatomic particles. Every atom or object in motion contains kinetic energy.

A human walking, a baseball flying through the air, food falling from a desk, and an alpha object in an electric field are all example of kinetic in action.

The equation for calculating the angular momentum of an object with mass m and motion is K.E. = 1/2 mv^2.

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Answer:

it’s the 2nd one

Explanation:

Answer:

second one

Explanation:

Pressure is a measure of force per unit area:

P = F/A

The water exerts a pressure of 202 kPa = 202,000 Pa on the diver, who has a surface area of 1.50 m². Then the force exerted by the water is F such that

F = PA

F = (202,000 Pa) (1.50 m²)

F = 303,000 N = 303 kN

If a metal ball is suspended by a rod , the forces acting on the system are balanced so there is no motion observed in the system and this is because of the upward tension in the rod .

Option 1 says : the tension in the rod

The gravitational pull that is acting downwards direction and the tension in rod that is acting in a anti parallel direction to the gravitational pull . being on the same line of action and in opposite directions , these forces cancels each other out .

Option 2 says : the friction of rod

Friction acts in cases of contact forces like a drag or pull not in cases of non-contact forces like gravity , thus friction can't balance it .

Option 3 says : the electromagnetic force

There are no charges or magnets present in the system so the electromagnetic force is absent in this case Thus they cant balance the gravitational force.

Option 4 says : the strong force around the rod

The strong force around is not on the line of action of the gravitational pull so it cant balance it.

So out of all the forces only the tension present in the rod is able to balance the gravitational force

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Answer:

2.5705594546378 mol

Explanation:

Used this calculator

http://www.endmemo.com/chem/mmass.php

Galaxies are indeed large groups of stars, and they can range in size from dwarf galaxies with only a few million stars to massive galaxies with trillions of stars. However, the stars within a galaxy are not stationary. They are in constant motion, but what keeps them from moving away from each other is gravity.

Gravity is a fundamental force of nature that attracts objects with mass toward each other. In a galaxy, the stars are held together by the gravitational pull of other stars. The combined mass of all the stars in a galaxy creates a powerful gravitational force that keeps them together. The more massive a galaxy is, the stronger its gravitational force, which in turn keeps the stars tightly bound.

In addition to gravity, there is also dark matter. Dark matter is a mysterious substance that makes up a significant portion of the universe's total mass. It is believed that dark matter exists within galaxies and that its gravitational pull helps hold the stars together.

In summary, the stars within a galaxy are kept from moving away from each other by the powerful force of gravity. This force is created by the combined mass of all the stars and is further strengthened by the presence of dark matter.

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Shale,sandstone, and limestone are the most common types of sedimentary rocks.

Answer:

4. Violet light has the shortest wavelength of all the colours and the highest frequency. Red has the longest wavelength and the lowest frequency.

5.

a. Radio waves

b. Radio waves

c. Radio waves

d. Radio waves

e. Infrared waves

f. Infrared waves

g. Infrared waves

h. X-ray waves

i. Gamma ray waves (UV)

6. Ultraviolet (UV) radiation

7. Premature aging of the skin and sun damage

(liver spots, keratosis, solar elastosis, etc.)

Hope it helps!

d. Radio waves

e. Infrared waves

g. Infrared waves

h. X-ray waves

i. Gamma ray waves (UV)

6. Ultraviolet (UV) radiation

Antiferromagnetic materials are magnetic materials that cannot be used to create permanent magnets.

In the case of anti-ferromagnetism, materials that exhibit magnetic ordering below a certain temperature exhibit magnetic magnetism.

Antiferromagnetic substances have magnetic moments that are antiparallel to the applied magnetic field, while ferromagnetic substances have magnetic moments that are parallel to the applied magnetic field. This causes antiferromagnetic materials to have zero total magnetism and positive magnetism for ferromagnetic materials.

Two magnetic characteristics of materials are ferrimagnetism and anti ferromagnetism. Ferrimagnetic materials are strongly drawn to a magnetic field in contrast to antiferromagnetic materials. Other magnetic properties of matter include para magnetism, ferromagnetism, and diamagnetism.

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Answer: accretion......

Answer:

The ball will continue to move at a constant speed forever until another force stops it.

Explanation:

Newton's first law of motion can be seen as a law of inertia. It explains that an object at rest or in a state of uniform motion will remain in that state unless it is acted upon by an external force.

Following the above, when the ball is thrown into space, the ball will continue to move with the velocity with which it was thrown until it comes in contact with another object that stops it. If this does not happen, it will continue to drift forever at that velocity.

When the box is lifted at a constant velocity, it means that the net force acting on the box is zero. This means that the force required to lift the box is equal to the gravitational force pulling it downward.

The gravitational force can be calculated using the formula:

F_gravity = m * g

Where F_gravity is the gravitational force, m is the mass of the box, and g is the acceleration due to gravity.

Given:

Mass of the box (m) = 12 kg

Acceleration due to gravity (g) = 9.8 m/s²

Substituting the given values into the formula, we can calculate the force required to lift the box:

F_gravity = 12 kg * 9.8 m/s²

                = 117.6 m/s²

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Answer:

The answer is increasing its temperature to longer and thinner.

The charge on the moving particle is -5.35 x \(10^{-21}\) C and the potential difference between the two locations is 1.29 x 10²V.

What is the charge?

Unknowns: The charge on the moving particle and the potential difference between the two locations.

Formula: The work done by an electric field on a charge is given by:

W = qΔV

where W is the work done, q is the charge, and ΔV is the potential difference.

The electrical potential energy of a charge in an electric field is given by:

PE = qV

where PE is the electrical potential energy, q is the charge, and V is the potential difference.

The electric field strength is given by:

E = ΔV/Δx

where E is the electric field strength, ΔV is the potential difference, and Δx is the distance moved by the charge.

Solution:

The work done by the electric field is equal to the change in electrical potential energy:

W = ΔPE = -6.9 x \(10^{-19}\)J

The electric field strength is given by:

E = ΔV/Δx = 325 N/C

The charge on the moving particle can be found using the formula:

W = qΔV

q = W/ΔV = (-6.9 x \(10^{-19}\) J)/(325 N/C x 4.0 m) = -5.35 x \(10^{-21}\) C

The negative sign indicates that the charge is negative.

The potential difference between the two locations can be found using the formula:

ΔV = -W/q = (6.9 x \(10^{-19}\) J)/(-5.35 x \(10^{-21}\) C) = 1.29 x 10² V

Therefore, the charge on the moving particle is -5.35 x \(10^{-21}\) C and the potential difference between the two locations is 1.29 x 10² V.

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Complete question is: A charge moves a distance of 4.0 m in the direction of a uniform electric field whose magnitude is 325 N/C. As the charge moves, its electrical potential energy decreases by 6.9 x \(10^{-19}\) J.  the charge on the moving particle is -5.35 x \(10^{-21}\) C and the potential difference between the two locations is 1.29 x 10² V.

Answer:

C. Capacitance

Explanation:

right on EDGE2021

Answer:

1 Pa

Explanation:

Pressure = Force/Area

P = 200/200

P = 1

The SI unit is Pa for pressure, one newton per square meter.

Answer:

4 seconds is -45.2 m/s.

Explanation: