Which of these is not true about a real image? Question 23 options: It is inverted. It is enlarged. It can be projected onto a screen. It appears behind the mirror.

The depth of snow was 0.8 inches when the storm began and 2.5 inches after the first hour of the storm describes the sequence of numbers generated by the function.

A polynomial function exists as a function that examines only non-negative integer powers or only positive integer exponents of a variable in a formula like the quadratic equation, cubic equation, etc.

Given, depth of the snow after n hours of a snowstorm exists represented by the function f(n+1) = f(n) + 0.8 where, f(0) = 2.5

To find, which statement explains the sequence of numbers rendered by the function.

Given function f(n + 1) = f(n) + 0.8 where f(0) = 2.5

Hence, the depth of snow was 0.8 inches when the storm began and 2.5 inches after the first hour of the storm describes the sequence of numbers generated by the function.

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Both the cars A as well as car b has zero speed after the impact.

Car b is stopped at the light when car a is crashes into it which is moving with a speed V the coefficient of restitution is given to be zero.

Because the coefficient of restitution is zero it means that the collision is perfectly inelastic in nature.

So, if the car a was moving with a speed v.

As it is already mentioned that after the collision ka bi has come to rest Swasthya the impact the speed of car b is new and because the collision is perfectly inelastic the speed of car a will also be zero.

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On average, the Sun is located around 93,000,000 miles (150 million kilometers) from Earth. It is so far away that it takes roughly 8 minutes for the Sun's light, which is moving at a speed of 186,000 miles per second (300,000 kilometers per second), to reach us.

The Sun is only 8.3 light minutes away from Earth, or 1.5781e-5 light years, since light travels from the photosphere of the Sun to the Earth in only 8.3 minutes.

The distance light travels in a year is measured in light-years. Light travels 5.88 trillion miles and 186,000 miles per second through interstellar space.

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The total acceleration of the object is 3×10^6 m/s.

To find the total acceleration, we can use the Pythagorean Theorem, which states that the square of the hypotenuse of a right triangle (c) is equal to the sum of the squares of the other two sides (a and b). In this case, the magnitudes of the two accelerations (a and b) are 6×10^6 m/s^2 and 15×10^6 m/s^2, respectively.

Therefore, we can use the formula a^2 + b^2 = c^2 to find the magnitude of the total acceleration:

6×10^6 m/s^2 + 15×10^6 m/s^2 = c^2

c = sqrt(6×10^6 m/s^2 + 15×10^6 m/s^2)

= sqrt(21×10^6 m/s^2)

= 3×10^6 m/s

So, the total acceleration of the object is 3×10^6 m/s. This is the result of the two forces acting on the object at 90 degrees to each other.

The total acceleration of the object is 3×10^6 m/s.

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Answer:

1.5x10⁷ m/s²

Explanation:

Acceleration is a vector, so this is a case of vector addition.  Let R = resultant vector.

R² = a-F₁² + a-F₂²

R = √(6x10⁶)² + (15x10⁶)²

R = √2.25x10¹⁴ = 1.5x10⁷ m/s²

One end of a spring is attached to a wall and its other end is pulled by a 20N force. The spring is strething until it reach 2.6 cm. Based on Hooke's Law, the spring constant is 769.23 N/m.

Hooke's Law states that when a spring is compressed or extended by a force, the force is proportional to the length strecth.

Spring constant represents the spring's stiffness. It describes the force needed per unit of spring extension. Spring constant and force have relationship where:

F = -k.x

F = force working on the spring

k = the spring constant

x = the spring's displacement from its equilibrium position

Based on the case, we know that:

F  = 20N

x = 2.6 cm = 0.026m

k = ?

We will use the spring constant formula to find the spring constant:

F = k.x

k = F/x

k = 20N/0.026m

k = 769.23 N/m

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Complete Question:

One end of a spring is attached to a wall. A 20N pull on the other end causes the spring to strecth by 2,6 cm. What is the spring constant?

When you look at a fish in a still stream from the bank, the fish appears shallower than it really is due to refraction. From directly above, it appears to be shallower than its real depth.

The correct option is C.

The refraction of light refers to the bending of light rays as they cross the boundary between media of different densities.

The bending of light rays may be towards the normal or away from the normal depending on the ratio of the densities of the media.

When light rays move from media of higher density to media of lower density, the light rays bend away from the normal.

When light rays move from media of lower density to media of higher density, the light rays bend toward the normal.

The ratio of the angle of the incident ray and the angle of the refracted ray is known as the refractive index of the medium.

The refractive index of various materials varies.

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The angular acceleration, which is frequently denoted by the symbol and stated in radians per second per second, is the rate at which the angular velocity changes over time. = t and = 0 for the scenario when the angular velocity is constant (nonvarying).

In layman's words, what is angular acceleration?

A spinning object's change in angular velocity per unit of time is expressed quantitatively as angular acceleration, also known as rotational acceleration. It is a vector quantity with either one of two predetermined directions or senses and a magnitude component.

What is the basic angular acceleration formula?

The rate at which angular velocity changes is referred to as angular acceleration. Angular acceleration is written as the equation: =t = t, where is the change in angular velocity and t is the change in time.

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The mallet is in contact with the croquet ball in the grass for 0.005 seconds long.

The mass of the croquet ball = 0.35 kg

The speed at which the ball struck = 3.1 m/s

The force exerted on the ball = 230 N

The total time when the mallet is in contact with the ball can be found using the formula,

                    F = mv/t

where F is the force

           m is the mass of the ball

           v is the speed at which the ball is struck

           t is the time

Let us rearrange it,

                  t = mv/F

Let us substitute the known values in the above equation, we get

                 t = 0.35 x 3.1 / 230

                   = 1.085 / 230

                   = 0.005 seconds

The total time when the mallet is in contact with the ball is 0.005 seconds

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The speed of the bullet immediately after it exits the block is 190 m/s.

What is speed?
The speed of an object, also known as v in kinematics, is the size of the change in that object's position over time or even the size of the change in that object's position per unit of time, making it a scalar quantity. The instantaneous speed is the upper limit of the average speed as that of the duration of the time interval gets closer to zero. The average speed of an object in a period of time is indeed the distance travelled by object divided by duration of the interval. Velocity and speed are not the same thing. The dimensions of speed are time divided by distance.

The speed immediately after the bullet exits the block is 190 m/s. This can be determined using the conservation of momentum principle, which states that the total momentum of an isolated system remains constant. In this case, the system is the bullet and the block of wood.
Before the bullet enters the block, the momentum of the system is equal to the momentum of the bullet, which is given by:
p_i = m_b * v_b = (3.0 g) * (520 m/s) = 1560 g m/s
After the bullet exits the block, the momentum of the system is equal to the momentum of the bullet and the block, which is given by:
p_f = m_b * v_b + m_w * v_w = (3.0 g) * (190 m/s) + (3.8 kg) * (0 m/s) = 570 g m/s
By conservation of momentum, we can set the initial and final momentum equal to each other and solve for the velocity of the bullet after it exits the block:
p_i = p_f
1560 g m/s = 570 g m/s + (3.8 kg) * v_w
v_w = 190 m/s
Therefore, the speed of the bullet immediately after exiting the block is 190 m/s.

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1. Filter absorbs all colors of white light.

2. The light that has passed through a filter, is always dim.

The filter selectively transmits the red and blue portions of the incident white light spectrum, but absorbs most of the green wavelength.

Color filters absorb certain wavelengths of color and transmit the other wavelengths allowing them to be seen.

Therefore in conclusion, the right filter can reduce glare, increase contrast, and make lunar features pop.

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The speed of the block when it is 10 cm from the equilibrium position is 3.87 m/s.

We need to apply the concept of conservation of energy. The conservation of the initial kinetic energy, the final kinetic energy, and the elastic potential energy must be applied in this situation. Mathematically this can be expressed as,

KE i = KE f + PE f

1/2* m* vi² = 1/2* m* vf² + 1/2* k * x²

where,

m is mass

vi is initial velocity

vf is final velocity

k is spring constant

x is displacement

Given that, m = 2 kg

k = 200 N/m

x = 10 cm = 0.1 m

vi = 4 m/s

Placing them in the above equation, we have

1/2* 2* 4² = 1/2* 2* vf² + 1/2* 200* 0.1²

16 - 1 = vf²

vf² = 15

vf = 3.87 m/s

Thus, the speed of the block when it is 10 cm from the equilibrium position is 3.87 m/s.

The question is incomplete. the complete question is 'what is its speed when it is a distance of 10 cm from the equilibrium position?'

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The force communicated through a rope, string, or wire when two opposing forces draw on it is known as tension.

When a body is suspended from items like chains, cables, strings, etc., tension is simply the drawing force at work on the body. T is used to signify it (occasionally also symbolised as Ft).

Tension formula is articulated as

T=mg+ma

Where,

T= tension (N or kg-m/s2)

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

m =Mass of the body

a = Acceleration of the moving body

For mass m, the forces are given as

T−mg=ma                                          ...... (1)

Similarly, for mass M, the forces are given as

Mg−T=Ma                                               ...... (2)

From equation (1), we have

T=mg+ma          

Substituting equation (3) in (2) we get

Mg−mg−ma=Ma

g(M−m)=a(M+m)

a=( M+m / M−m )g

T=m×( M+m / M−m )g+mg

T = g( Mm - m² +  m² + Mm / M + m) = g( 2Mm / M+m )

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= 2(4+6)

= 2×10

= 20

HOPE IT HELPS !!!!!!!!

MARK AS BRAINLIEST

A stick of length 2L and negligible mass has a point mass m affixed to each end. The stick is arranged so that it pivots in a horizontal plane about a friction less vertical axis through its center, thus calculated values are:

(A) Torque (τ) = F × L cosθ

(B) α = - Kθ/2m

(C) d²θ/dt² = -Kθ/2m

(D)  θ = cos ⁻¹ ( kθ t/2Lm)

The term "torque" refers to the twisting force that an engine exerts as it works, and it expresses the rotating force. Everyday activities like turning a doorknob, opening a drink bottle, using a tool, or peddling a bicycle all involve torque.

(A)

General equation of torque (τ) will be product of force and perpendicular distance.

τ = F × (perpendicular distance)

In this case, restoring torque. Hence, force F we taken as restoring force, and the perpendicular distance x-axis is component of L.

or, τ = F × [tex]L_{x-axis}[/tex]

or, τ = F × L cosθ

(B)

Angular acceleration general equation is:

α = Δω/Δt

here,  Δω = change in angular velocity.

Δt = change in time

As we know, acceleration = force/mass

now, angular acceleration = angular force / mass of body

so, α = - Kθ/2m

(C)

f(t) = α × (t²/2)

or, f(t) = - Kθ/2m × (t²/2)

or, f(t) = - Kθ t² / 4m

now differentiating with respect to t:

or, dθ/dt = -Kθ t/2m

differentiating again with respect to t:

d²θ/dt² = -Kθ/2m

(D)

The expression for angular displacement:

cos θ = adjacent side / opposite side

or, cos θ = adjacent side / 2L

or, θ = cos ⁻¹ ( kθ t/2Lm)

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A piston presses down on a sealed cylinder filled with gas until the gas occupies a space that is half as big as before. as a result, the pressure on the gas becomes doubled.

When the piston is pushed down in a cylinder filled with gas What happens to the volume of the gas inside?

When the pressure on the piston is doubled, it moves down until the pressure exerted by the gas equals the pressure exerted by the piston. At this point, the volume of the gas is halved. If the pressure on the piston is again doubled, the volume of gas decreases to one-fourth of its original volume.

What happens to the pressure in a sealed container if the amount of gas in the container increases?

Pressure increases.

Why does the pressure inside a container of gas increase if more gas is added to the container?

The pressure inside a container of gas increases when more gas is added to the container because the volume of the container doesn't change, and the added gas adds more molecules to push against the sides of the container. It is the movement of the gas molecules pushing against the container that causes pressure.

Thus, pressure is doubled.

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The partition function of a system of particles is a statistical measure that describes the distribution of particles over different energy states.

It is defined as:

Z = Σexp(-E_i/kT)

where Z is the partition function, E_i is the energy of the i-th particle, k is the Boltzmann constant, and T is the temperature of the system. The sum is taken over all possible energy states of the particles.

In the case of a system of volume v and temperature t consisting of n independent, distinguishable particles, each of which can be in one of two states with energy equal to 0 or e, the partition function can be expressed as:

Z = exp(-0/kT) + exp(-e/kT)

This is because there are two possible energy states for each particle (0 or e), and the partition function is a sum over all possible energy states of the particles.

Substituting the values of k, T, and e into the partition function equation, we can compute the value of Z:

Z = exp(-0/kT) + exp(-e/kT)

= exp(0) + exp(-e/kT)

= 1 + exp(-e/kT)

Thus, the partition function of the system is given by the equation:

Z = 1 + exp(-e/kT)

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A care package drops from a stationary high-flying helicopter with increased velocity and decreased acceleration.

An item that falls through a vacuum is exposed to only one external force, the gravitational force, represented as the weight of the object. An item that is moving simply because of the influence of gravity is said to be free falling and its motion is defined by Newton’s second law of motion. With algebra we can solve for the acceleration of a free falling item. The acceleration is constant and equal to the gravitational acceleration g which is 9.8 meters per square second at sea level on the Earth. The weight, size, and form of the item are not a consideration in characterizing a free fall. A beach ball falls with the same velocity as an airplane in a vacuum.

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Answer: true

Explanation:

Planck introduces quantized exchange of energy between the fundamental modes of vibration  is true statement.

In 1900, Planck proposed that the energy of the oscillators (or "modes of vibration") in a blackbody emitter could only be exchanged in discrete packets or "quanta" rather than continuously. This idea was revolutionary at the time, as it went against the classical laws of physics that had been accepted for centuries. Planck's theory was able to explain the observed blackbody spectrum much more accurately than classical theories, and it laid the foundation for the development of quantum mechanics.

However, it is important to note that Planck's theory did not fully explain the behavior of blackbody emitters. It was later refined and extended by other physicists, including Albert Einstein and Niels Bohr, who developed a more complete theory of quantum mechanics.

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Triangulation can be used to calculate the separations between the closest 100,000 or so stars.

A surveying technique called triangulation measures the angles of a triangle made up of three survey control sites. The additional dimensions there in triangle are determined using geometry and the reported length of always one side.

A process of analyzing study results using many data collection methods is known as triangulation. It serves three key functions: to improve validity, to paint a clearer image of a study problem, and to examine various approaches to problem-solving.

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At height h , potential energy of coaster car  having mass m = mgh .

The car will lose potential energy and gain kinetic energy.

height lost by car when it is at the top of loop of radius R

= h - 2R

potential energy lost = mg ( h - 2R )

kinetic energy gained = mg ( h - 2R )

kinetic energy = 0 + mg ( h - 2R )

= mg ( h - 2R )

b )

For the car to remain in contact with the track , if v be the minimum velocity

centripetal force at top = mg

m v² / R = mg

v² = gR

kinetic energy = 1/2 mv²

= 1/2 m x gR

= mgR /

If h be the minimum height that can give this kinetic energy

mg ( h - 2R ) = mgR / 2

h - 2R = R / 2

h = 2.5 R

Therefore, the height of the roller coaster will be 2.5 R.

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The magnitude of the rate of change of the magnetic field inside the coil  9.57*10^-5 T /s,  voltmeter reading is  1.386*10^-6 V

Given that radius of the coil is  r = 0.02m

Number of turns in the coil is  N  = 11

current in the coil is  I  = 3.0A

velocity  is  v  = 3.3 m/s

distance from the wire to the center of the coil is  x  = 0.17m

db. / dt.  = B. v / x

       B  = 2(μ_0 N i / )3πx

           = 2 * 4π*10^-7 * 11 * 3.0A / 4π*0.17m

           = 5.12*10^-6 T

     dB / dt  = 5.12*10^-6 * 3.3m/s / 0.17 m

                  = 9.57*10^-5 T /s

b ) voltmeter reading is  V  = n A dB / dt

                                         = 11*π ( 0.02)^2 * 9.57*10^-5 T/s

                                        = 1.386*10^-6 V

An electro magnetic field, often known as an EM field or EMF, is a non-quantum (classical) field created by accelerating electric charges. [1] The classical equivalent of the quantum electrodynamics' quantized electromagnetic field tensor, it is the field that classical electrodynamics describes. Charges and currents are affected by the electromagnetic field, which interacts with them and moves at the speed of light (in fact, this field can be compared to light). One of the four basic forces of nature is its quantum counterpart (the others are gravitation, weak interaction and strong interaction.)

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In Newtonian physics, free fall refers to any motion of a body in which gravity is the only force acting on it.

What are the forces at work on a falling object?

In addition, gravity is pulling something down as it falls. The force of gravity is an unbalanced force at the beginning of the fall. As a result, the object accelerates or picks up speed. It runs into aerodynamic drag or air resistance as it accelerates.

What is the force responsible for an object falling to the ground?

All objects on Earth experience weight, or a gravitational pull that is proportional to their mass and is imposed by the planet's mass. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth's surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second.

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At this location, the ocean lies 1515 meters deep.

Particles that are vibrating make up sound waves. These collide with other particles, causing them tp vibrate, which allows the sound to escape the source. Your ear drums vibrate as a result of air vibrations, which allows you to perceive sound. This vibration is transformed into messages, which proceed to your brain via a nerve.

Briefing:

Let the sound speed in sea water be 1500 m/s.

If he hears the echo 3.5s after the strike,

then the sound would have traveled a distance of:

                         1500 * 2.02 = 3030 m to the bottom and back.

This would mean the ocean is 3030 / 2 = 1515 m deep.

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Answer: the motion of an object

Explanation:

I just took the test

Answer:the motion of an object

Explanation:

I finished the sample work

The matter in this series of images is going through a change and a conclusion about the type of change is shown which indicates that it is a chemical change.

This is referred to as the type of change which occurs when the substance's composition is changed and it also occurs when a substance combines with another to form a new substance or when one is broken down into two or more different substances.

The image shown indicates that fire was lit and the substance was subjected to heat which therefore means that there will be gases produced as bubbles are likely to be seen also which indicates a new substance being formed and it is a characteristic of a chemical change which is therefore the reason why it was chosen as the correct choice.

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Indicators of motion in relation to a reference point include distance, displacement, speed, velocity, acceleration, and deceleration.

The terms used in describing motion include linear motion, angular motion, rotational motion, and oscillatory motion.

To describe the motion of an object, one would use words such as move, accelerate, decelerate, rotate, and vibrate.

Describing motion is the process of quantifying changes in position, direction, and velocity over time. For example, when a ball is thrown, one can describe its motion by noting its initial position, the direction of its throw, and how fast it is moving.

It is important to identify a reference point for any description of motion because it provides context for the motion. Without a reference point, it would be impossible to accurately quantify motion.

Speed and velocity describe the rate of motion, and direction describes the orientation of motion.

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Projectile motion is the movement of an object in the curved path toward the ground as it has both a horizontal force and the downward force of gravity acting on it.

Projectile motion is the movement of an item thrown or projected into the air, situation to only the acceleration of gravity. The item is referred to as a projectile, and its path is referred to as its trajectory.

The path of a projectile is parabolic. at some point in the motion, the acceleration of the projectile is steady and acts vertically downwards being identical to g.

Projectile movement is the movement of an item thrown up within the air at a perspective from the horizontal (or floor) with the item shifting below gravitational acceleration pointed vertically downwards, Now depending on the perspective of projection.

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On a spring, mass oscillates with an amplitude and a time T. at T=3t/4 the mass will be at 0.48cm away from its mean postion.

Simple harmonic motion is described as the periodic motion of a point across a single direction with an acceleration that is always toward a fixed point in that lines and a distance from that point that is proportional to that acceleration.

Mass at the time t = 3T/4

Given T=T, A=0.48cm

φ = -π/2 , x=0, t=0

ω = 2π/T

The position of SHM is given by:

x(t) = Acos(ωt+φ)

x(3T/4) = 0.48cos((2π/T)(3T/4)+(-π/2))

x = 0.48cos(π) = -0.48

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The tank can hold a water of volume 67.2gallons

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.

The capacity of an object can be measured in litres, gallon , cm³ e.t.c.

The tank is 1/8 full, when 42 gallons of water is added it is 3/4 full.

Therefore the fraction of water added is 3/4-1/8= 5/8.

This means 5/8 of the tank is 42 gallons. Therefore if 5/8 of the tank = 42gallons,

full tank will be 42× 8/5

= 67.2 gallons

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