According to Copernicus , the sun is the center of the solar system .

Answer: The total force required by the reindeer to accelerate such a sled is given by Force in Newtons equals mass in Kg times Acceleration

Explanation:

The explanation for the extra empty white square in the bottom figure is that one of the shapes in the top figure is larger by one square than the corresponding shape of the same colour in the bottom figure.

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1 cycle per second

The unit of frequency is Hertz (Hz). One Hertz is equal to one cycle per second. The frequency of a periodic phenomenon (such as a wave, oscillation, or rotation) is a measure of the number of cycles that occur within a given time period. The higher the frequency, the more cycles that occur in a given time period.

For example, if a wave has a frequency of 10 Hertz, it means that it is completing 10 cycles per second. If a rotating object has a frequency of 100 Hertz, it means that it is completing 100 rotations per second.

The units of Hertz are commonly used to measure the frequency of waves, oscillations, and rotations in various fields, including physics, engineering, and electronics.

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30 Coulombs / 0.1 seconds = 300 Amps

The average current during this time is calculated by dividing the amount of charge (in Coulombs) by the amount of time (in seconds) it takes to lower the charge to ground. So, in this case, it is 30 Coulombs divided by 0.1 seconds, which is equal to 300 Amps.

The one-dimensional diffusion equation or Fick's second law is the name of this equation. For the geographically and temporally variable concentration, it is solvable.

A diffusion explanation is what?

The movement of molecules along a concentration gradient is known as diffusion. It is a significant process that all living things go through. Diffusion facilitates the flow of materials into and out of cells.

Which definition of diffusion is the best?

Diffusion is the movement of molecules from a region where they are more concentrated to one where they are less concentrated. Therefore, "Movement of molecules from a region of their greater concentration to a region of their lower concentration" is the right response.

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A toy airplane, flying in horizontal, circular path, completes 10 circles in 30 seconds, then the average speed of the airplane is 8.4 m/s.

A specific type of motion in which object travels in a circle with a constant speed is called uniform circular motion. For example, point on a propeller spinning at constant rate is executing uniform circular motion.

Given the toy completes 10 circle in 30 seconds. So, frequency of revolution ;

f= 10/30s

= 0.33 Hz

As we know that period of revolution is the reciprocal of the frequency;

T= 1/f

=1/0.33

= 3 sec

Given, radius of the circular path is, r = 4.0 m

Total distance covered b toy in one circle is the length of circumference: 2πr

So, the average speed is 2πr/T

=  (2 * π * 4)/3

So, the average speed of the airplane is = 8.4 m/s.

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A chain reaction can be set up if the neutrons produced by one fission strike other U-235 nuclei if the three neutrons produced by the fission may hit other nuclei of uranium 235, causing the process to repeat.

This is referred to as a chemical reaction or other process in which the products themselves promote or spread the reaction.

The products which are yielded initiate further processes of the same kind and in this scenario a chain reaction can be achieved if three neutrons produced by the fission may hit other nuclei of uranium 235 which will lead to a repetition of the process.

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Both forces have equal amplitudes. When a Volkswagen Bug and a Volvo truck collide head-on, the statement will be accurate in this instance. Due to collision.

The force's strength to effect the required change is determined by its magnitude. It acts in a specific direction and has a certain magnitude. Contact or non-contact force is both possible. Applying force in one form or another is how almost all daily tasks are completed. A force's strength is quantified by a number called its magnitude. Take a force of 10 N, for instance, in the direction of the east. The phrase "towards east" denotes a direction, and "10" represents the force's magnitude.

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The system's total initial momentum is -9.07m/s when the first hockey puck comes to rest following the collision, proving that momentum conservation persists.

We are given that,

Mass = m₁ = 0.17kg

Mass of second hockey = m₂ = 0.11 kg

Initial velocity = v₁i = ?

Final velocity = V₂f = 15m/s

Utilizing the principle of momentum conservation, for finding the initial momentum we get,

m₁v₁i + m₂v₂i= m₁v₁f + m₂v₂f

0.17 (v₁i) + 0.11 (0) = 0.17 (0) + (0-.11) (15)

0.17v₁i = - 1.65

v₁i = - 1.65/0.17

V₁i = - 9.705 m/s

Thus,  the initial momentum of the system would be -9.705 m/s and negative sign indicate the momentum is in opposite direction.

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The system's total initial momentum is -9.07m/s when the first hockey puck comes to rest following the collision, proving that momentum conservation persists.

We are given that,

Mass = m₁ = 0.17kg

Mass of second hockey = m₂ = 0.11 kg

Initial velocity = v₁i = ?

Final velocity = V₂f = 15m/s

Utilizing the principle of momentum conservation, for finding the initial momentum we get,

m₁v₁i + m₂v₂i= m₁v₁f + m₂v₂f

0.17 (v₁i) + 0.11 (0) = 0.17 (0) + (0-.11) (15)

0.17v₁i = - 1.65

v₁i = - 1.65/0.17

V₁i = - 9.705 m/s

Thus,  the initial momentum of the system would be -9.705 m/s and negative sign indicate the momentum is in opposite direction.

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The potential energy of the products is lower than the potential

energy of the reactants. Hence, option (C) is correct.

The energy that is stored in a reaction and used to help a compound break its bond when a chemical reaction is taking place.

In the presence of activation energy, the bonds in the reactants in the reaction mixture split, releasing energy and forming the product.

Hence, the potential energy of the products is lower than the potential

energy of the reactants. Option (C) is correct.

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Answer:

Approximately [tex]0.0263\; {\rm m}[/tex] (assuming that [tex]g = 9.81\; {\rm N \cdot kg^{-1}}[/tex].)

Explanation:

The weight of this [tex]m = 1.50\; {\rm kg}[/tex] box is:

[tex]\begin{aligned}(\text{weight}) &= m\, g \\ &= (1.50\; {\rm kg})\, (9.81\; {\rm N\cdot kg^{-1}}) \\ &\approx 14.715\; {\rm N}\end{aligned}[/tex].

The tensions in the two springs, combined, is equal to the weight of this box.

To determine how the weight is split between the two springs, consider Hooke's Law. By Hooke's Law, the tension in the spring is proportional to the distance (displacement) by which the spring is stretched:

[tex](\text{tension}) = (\text{spring constant})\, (\text{displacement})[/tex].

The spring constant of the two springs in this questions are equal. For the springs to hold the box side-by-side, their displacements also need to be equal. Hence, the tension in the two springs would be the same.

Therefore, the weight of the box would be evenly split between the two springs. The tension in each spring would be:

[tex]\begin{aligned}\frac{(\text{weight})}{2} &= \frac{14.715\; {\rm N}}{2} \approx 7.3575\; {\rm N}\end{aligned}[/tex].

To find the displacement of the spring, divide the tension in each spring by the spring constant:

[tex]\begin{aligned}(\text{displacement}) &= \frac{(\text{tension})}{(\text{spring constant})} \\ &\approx \frac{7.3575\; {\rm N}}{280\: {\rm N\cdot m^{-1}}} \\ &\approx 0.0263\; {\rm m}\end{aligned}[/tex].

Explanation:

When the water flows at high speed through the turbine, that is actually first a conversion of the potential energy into Kinetic energy, and then the Kinetic energy is now harvested by the turbine.

Water at a height has potential energy. Water moving has Kinetic energy. However it happens, yes, the potential energy does eventually get turned into electrical energy via the turbine driving a generator.

The elongation of the spring is 0.18 m.

Let us recall that by the use of the Hooke's law, we know that teh force that has been exerted on the spring by the object would be directly proportional to the extension of the spring if the elastic limit has not been exceeded.

We have that;

W = 1/2kx^2

W = work done

k = spring constant

x = extension

We then have;

1.6 = 1/2 * 96 * x^2

x = √2 * 1.6/96

x = 0.18 m

It would be increased by a length of about 0.18 m.

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With the use of formula the extension in the spring is 0.183 m approximately

Elastic Potential Energy of the spring is due to the work done on it by the person winding the clock.

Giving that a heavy block is suspended from a vertical spring. The elastic potential energy is stored in the spring is 1.6 J. The elongation of the spring if the spring constant is 96 N/m can be calculated by using the formula below

E = 1/2Ke²

Where

Substitute all the parameters

1.6 = 1/2 × 96 × e²

1.6 = 48e²

e² = 1.6/48

e² = 0.03333

e = √0.03333

e = 0.183 m

Therefore, the elongation of the spring is 0.183 m

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The direction of E⃗ at a point where B⃗ is in the positive x-direction is in the +y-direction (D). The direction of E⃗ at a point where B⃗ is in the negative y-direction is in the -x-direction (A).

This is due to the fact that the direction of the electric field vector (E⃗) is orthogonal (perpendicular) to the direction of the magnetic field vector (B⃗) and the direction of wave propagation. In the case where the radio wave is traveling in the negative y-direction, the magnetic field vector (B⃗) would be in the positive x-direction in order to be orthogonal to the direction of wave propagation. Therefore, the electric field vector (E⃗) would also be in the positive y-direction.

Similarly, in the case where the radio wave is traveling in the positive y-direction, the magnetic field vector (B⃗) would be in the negative x-direction in order to be orthogonal to the direction of wave propagation. Therefore, the electric field vector (E⃗) would also be in the negative x-direction.

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the answer is 8.85 m/s.

step by step explanation:

m = 85 kg

h = 4 m

Ep=m*g*h

Ep=85kg*9.8m/s²*4m = 3332 J (joules)

Ep=1/2*m*v²

3332=1/2*85kg*v²

3332= 42.5*v²

v² = 78.4

v = 8.85m/s

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the correct question is -

Tarzan's mass of 85 kg swings down from a tree limb on the end of the 20 m vine. His feet touch the ground 4.0m below the limb how fast is Tarzan moving when he reaches the ground?

​

The inverse of Janine's equation is r = -120/(t - 120).

An equation is described as a formula that expresses the equality of two expressions, by connecting them with the equals sign.

In algebra, an equation is a mathematical statement that establishes the equality of two mathematical expressions.

The categories for equations are either identities or conditional equations.

For each potential value, the variables provide an identity. Only certain combinations of the values for the variables allow a conditional equation to hold true.

In order to  find the inverse of Janine's equation, we will to solve for r in terms of t.

First, we can rearrange the equation to get

t - 120 = 1/r.

divide both sides of the equation by 1/r to get

t/r - 120/r = 1.

divide both sides of the equation by -120/r to get

r = -120/(t - 120).

Therefore, the inverse of Janine's equation is r = -120/(t - 120).

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Answer: R=120t/120-t

Explanation: edmentum/plato :)

Answer:

Below

Explanation:

Water that boiled off =   .080 - .071 = .009 kg  = 9 gm

Your question did not state the INITIAL temperature of the water

   THIS answer will assume it was at its boiling point

25200 J / 9 g  =  2800 J / g  = heat of vaporization

Answer:

Both are 175 m

Explanation:

In this case, the distance (total length traveled) is the same as the displacement (distance from the point of origin to the end point).  The person walked a straight line from school all the way to Domino's.

150 m + 25 m = 175 m

The moment of inertia of the cylinder with radius 0.120m mounted on a frictionless stationary axle for rotation about the axle is 0.026kgm^2.

At the initial time the body was at rest, so the initial angular velocity wo=0. According to the equation , theta -theta o = 1/2×a0 ×t +wo×t.

Now when the function for angular displacement (θ−θ0) = f(t^2) ( in radians ) is drawn the data lies close to a straight line, the slope is equal to =16.0 rad/s^2.

So the value of angular acceleration a0 is, k=1/2×a0 ,a0=2×k , a0=32 rad/s^2.

In rotational motion of the cylinder , I×a0= Tz ,I×a0=F×r , I= (F×r)/ a0 ,I=(7×0.12)/32, I= 0.026 kgm^2.

So the moment of inertia of the cylinder for rotation about the axle is 0.026kgm^2.

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Chronometers are important in marine navigation because they provide a reliable and accurate measure of time. This is necessary for calculating longitude, which is an essential part of navigation, as well as for synchronizing other navigational instruments. Chronometers are also important for determining the speed of a vessel and for tracking its progress over time.

A chronometer is essential in marine navigation because it provides an accurate measure of time and is used to calculate longitude. Longitude is an essential part of navigation, as it tells you the exact location of a ship. Accurate timekeeping is key in order to calculate the correct longitude, so having a reliable and accurate chronometer is essential for safe navigation.

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A projectile of mass 0.877 kg is shot straight up with an initial speed of 27.3 m/s. It would go 37.98 m  if there were no air resistance. If the projectile rises to a maximum height of only 8.49 m, e the magnitude of the average force due to air resistance will be253.71 N

Mass  projectile=0.85 kg=m

Velocity  projectile=30 m/s=

u = initial velocity

Final velocity =0

g is  acceleration due to gravity=9.81 m/s²

h is maximum height of the projectile

a)the height can be calculate as follows:

In this case loss of Kinetic energy (K.E.) = loss in potential energy (P.E.)

ΔK.E.=ΔP.E.

1/2mu²-1.2mv²= mgh

1/2 m xu² = mgh

h = u²/ 2g

h = (27.3)²/ 2 ( 9.81)

h= 37.98 m

b) the magnitude can be calculate as follows:

h' is height of the projectile=8.49 m

F is Average force due to air resistance

There will be a loss of P.E. due to air resistance

ΔP.E.=mg(h-h')

F×h'=mg(h-h')

F×8.49=0.877×9.81(37.98-8.49)

F= 0.877×9.81(37.98-8.49)

                   8.49

F= 253.71 N

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A container of hydrogen sulfide gas has a pressure of 35,650 pa. It is equivalent to 267.4 Torr.

When molecules collide with one another or the walls of a container, pressure is produced in a gas.

Gas pressure is produced by the interaction of gas molecules with an object's surface. Any surface with a sizable area is vulnerable to several impacts quickly, even though each one only involves a tiny amount of power, which might result in a high pressure.

All directions of pressure are equally provided by gaseous molecules.

The SI pressure unit is called Pascal (Pa).

The pressure of hydrogen sulfide gas in Pa = 35650 Pa.

The conversion factor between Pascal and torr is as follows:

1 Torr = 133.322 Pa

Use the conversion factor and determine the pressure of hydrogen sulfide gas in torr as follows:

1 Pa = [tex]\frac{1}{133.322}[/tex] Torr

1Pa=0.00750Torr

35,650Pa= 35,650x0.00750 Torr

35,650Pa= 267.4Torr.

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When the first hockey puck comes to rest after the collision then the conservation of momentum holds and the total final momentum of the system is 23.18 m/s.

Applying the law of conservation of momentum,

we get,

m1v1i + m2v2i= m1v1f + m2v2f

0.17 (15) + 0.11 (0) = 0.17 (0) + (0-11) (V₂f)

0.17 x1500+ 0.11 V2f Vaf 0.17x15 0.11

V₁f =23.18 m/s

A collision between bodies in which the total kinetic energy of the bodies is conserved. Elastic collisions, such as the collision of a rubber ball on a hard surface, result in the reflection or "bouncing" of bodies away from each other.

In a perfectly elastic collision, no energy is turned into thermal energy internal to the bodies, and none is spent on permanently deforming the bodies or radiated away in some other fashion.

A collision between bodies in which the total kinetic energy of the bodies is not conserved. Inelastic collisions, such as the collision of two balls of clay, tend to result in the slowing and sometimes the sticking together of the colliding bodies.

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The system's total final momentum is 2.54 kg m/s m/s when the first hockey puck comes to rest following the collision, proving that momentum conservation persists.

Utilizing the principle of momentum conservation,

we get,

[tex]M_{1} V_{1}i +M_{2} V_{2}i =M_{_{1} } V_{1}f +M_{2} V_{2} f[/tex]

0.17 (15) + 0.11 (0) = 0.17 (0) + (0.11) (V₂f)

[tex]V_{2}[/tex]f =23.18 m/s

p = mv

p = 0.11*23.18 kg m/s

p = 2.54 kg m/s

a collision in which both bodies maintain their full internal kinetic energy. Elastic collisions cause bodies to reflect or "bounce" away from one another, like when a rubber ball strikes a hard surface.

When two perfectly elastic bodies collide, no energy is converted into internal heat energy and no energy is used to permanently distort the bodies.

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Converging of rays by concave mirror is the property used in telescope and it converges the rays coming from infinity.

A spherical mirror has the shape of a segment of a sphere. A concave spherical mirror has the silvered surface of the mirror on the inner, or concave, side of the curve. A convex spherical mirror has the silvered surface of the mirror on the outer, or convex, side of the curve.

The mirror has a radius of curvature of R, Its center of curvature is the point C, Point V is the center of the spherical segment. A line drawn from C to V is called the principle axis of the mirror.

A point source of light is placed at O, Rays are drawn from O, After reflecting from the mirror, the rays converge at point I, Point I is called the Image point, Light actually passes through the point so the image is real.

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Converging property of concave mirror is used in telescope.

Concave mirror is used in telescope because it converses the incident rays parallel to principal axis and focused on focal point. The intensity of light increases because of the convergence of the light beam. Concave mirror form both real and virtual images. If the objects are closer to the mirror, then a virtual and magnified image is formed. If the object is further away from the mirror, a real and diminished image formed.

Concave mirror is a spherical mirror, whose reflecting surface is curved inward, that is, it faces toward the Centre of the sphere.

Concave mirror equation:

[tex]\frac{1}{v} +\frac{1}{u} =\frac{1}{f}[/tex]

The distance between object and pole of mirror = u

The distance between image and pole of mirror = v

The distance between the principle of focus and pole of mirror is = f

Focal length: f = [tex]\frac{R}{2}[/tex]                    (R = radius of curvature of spherical mirror)

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Santiago’s teacher showed him a kind of cloth that changes color if it is placed out in the sun, but does not change color if it is placed under a desk lamp because the sun gives off a type of light that carries energy, and light from the desk lamp does not.

This is referred to as the luminous celestial body around which the earth and other planets revolve, from which they receive heat and light.

The light emitted by the sun contains energy which could be in the form of solar energy and is therefore the reason why light from the sun changes the color of the cloth while the light from the desk lamp does not.

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The work done when 1 mole of a gas is allowed to expand freely in vacuum is 0 J.

Given that,

Number of moles n = 1.

Gas expands in vacuum and so it is a case of free expansion. It means that,

P ext = 0 and it is an irreversible process.

Mathematically, W = - P ext ( v₂ - v₁)

And its value is zero, W = 0.

In a free expansion, gas expands in vacuum and the molecules move freely and gas expands against no force.

Thus, the required work done when 1 mole of gas is allowed to expand freely is 0 J.

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Answer:

Explanation:

a)

By Hooke's law

F=kx

⇒kd

=83.8×0.0546

=4.575N

By Hooke's law, F=kx ⇒kd =83.8×0.0546 =4.575N.

The first traditional example of an explanation of elasticity is Hooke's law. Elasticity is the quality of a substance or item that allows it to return to its original shape after distortion.

It is possible to refer to a "restoring force" as the capacity to restore normal shape after distortion. This restoring force, when viewed in the context of Hooke's Law, is often proportional to the degree of "stretch" encountered.

These experiments can range from blowing up a balloon and pulling on a rubber band to calculating the amount of wind pressure required to bend and wobble a tall building.

Therefore, By Hooke's law, F=kx ⇒kd =83.8×0.0546 =4.575N.

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Scientists have discovered a pill that, if taken once a day, can reduce chest pains, then : The committee would conduct few trials with actual patients and then evaluate the drug's success rate.

All drugs must go through the pipeline of discovery, investigation, clinical trials, and FDA approval before being marketed. This activity reviews federal regulations of medication development and highlights the interplay between FDA, drug manufacturers and clinical researchers.

Drugs have to undergo laboratory and animal testing to answer basic questions about safety and drugs are also tested on people to make sure they are safe and effective.

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When you keep an object in front of a concave mirror, an enlarged image of the object is formed when it is kept close to the mirror and an inverted image of the object is formed when it is kept at a distance. A convex mirror always forms a small and an erected image of the object.

Concave mirrors are spherical mirrors with a reflecting inner surface. Convex mirrors are spherical mirrors with a reflecting surface on the outside.

A concave mirror, also known as a converging mirror, has an inwardly depressed reflecting surface (away from the incident light). Light is reflected inward to a single focal point via concave mirrors.

Convex mirrors are curved mirrors with a reflecting surface on the outside. (Vex is an acronym meaning protruding).

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b. The moment it emerges from the barrel. less than or equal to the bullet fired . This is because the sine or cosine modulus of any angle to be less than or equal to one.

According to Newton's Third Principle of Motion, every action has a corresponding and opposing reaction. A bullet shot from a gun experiences force from the weapon alone, which propels it ahead. As it goes rearward, the bullet exerts an equal and opposing force on the rifle.

Actually, each of the three events will impact in a different way. The item without air would be the first to impact drag, therefore any fired or lost bullets.

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