after a red super giant completes he to c fusion, what elements may fuse when the temperature reaches 6x108 to 2.7x109k ?

Transistor switches may be used to turn a DC minimal device (like LEDs) ON or OFF by employing a transistor in its saturated but also cut-off states.

Electronics, a circuit is a completely circular conduit through which electricity travels. A simple circuit consists of a current generator, conductors, and a load. In general, a circuit may be thought of as any predetermined path that electricity follows.

A circuit is a closed circuit in which particles can travel. An electrical source, such a battery, provides electricity to the circuit. Until the circuit is complete, that is, it makes a full circuitous return to the electrical source, no electrons will move.

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The ratio of volumes of the bubble is Vs/Vb= 3.74

Find the attachment answer

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The energy of a single photon of light that has a frequency of 2. 30 × 10^17 hz is E=1.52×10⁻¹⁸J.

Use the formula E=hv.

E=energy of photon

h=Planck constant=6.626×10⁻³⁴

v=frequency of photon

We can plug in what we know:

E=(6.626×10⁻³⁴)( 2. 30 × 10^17)

Plug this into your calculator:

E=1.52×10⁻¹⁸J

Where energy E is measured in J, or joules.

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The gene contains the instructions to make a protein that has information about the genetic characters of an organism.

Inside our cells there is presence of DNA.

It is a double stranded deoxyribonucleic acid.

This DNA is the place where the genetic characters resides.

But this DNA is made up of different things like the sugar.

So the genetic material is found in a part of DNA called a gene.

A gene is a short section of DNA.

The genes contain instructions that tell your cells to make molecules called proteins. Proteins perform various functions in your body to keep you healthy. Each gene carries instructions that determine your features, such as eye colour, hair colour and height.

Therefore, the gene contains the genetic information and the instructions to make a protein which determines the characteristics of an individual.

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The time needed for the block to reach the floor is 1.16 seconds that can be calculated by using the kinetic equation.

The tension for both the masses will be different. But the blocks will have the same acceleration.

Now, the tension in the 4.0 kg block is

T₂ = 4.0 kg (a - g)

Similarly, in the 2.0 kg block

T₁= 2.0 kg (a + g)

Consider the pulley as a solid disc. The rotational inertia about its axis is

I = 1/2 m R²

Here, mass of the pulley is m and radius of the pulley is R.

Now, the net torque acting on the pulley is

T₂R - T₁R  = I \alpha

Here, torque due to the friction in the pulley is \tau and angular acceleration of the pulley about its axis is \alpha

2.0 kg (a + g) R - 4.0 kg (a - g) - \tau = 1/2 m R2 x a/R

a = {gR (4.0 kg - 2.0 kg) }- \tau / R (4.0 kg + 2.0 kg + m/2)

Substitute 9.8 m/s² for g, 6.5 cm for R, 0.60 N m for  \tau and 2.0 kg for m in the above equation

a = {gR (4.0 kg - 2.0 kg)} - \tau / R (4.0 kg + 2.0 kg + m/2)

  = {(9.8 m/s²)(6.5 cm)(1 m/ 100 cm) (4.0 kg - 2.0 kg) - 0.60 N m} / (6.5 cm    (1 m/ 100 cm) (4.0 kg + 2.0 kg + 2.0 kg/2)

   =1.48 m/s2

The height of the 4.0 kg block above the floor is

y = 1.0 m

Thus, using kinetic equation the time can be calculated as follows:

t=(2y/a)^1/2

t=((2*1m)/(4.8 m/s²))^1/2

t=1.16 s

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Hence, normal reaction on ball is 4.22N.

Mass,M=1kg

Angular velocity, ϖ=10rad/s

Length of rod, r=0.1m

Angle, α=30o

From the figure,

Horizontal Equilibrium forces.

Tcos30o=mϖ2r=1×102×0.1=10

T=cos30o10​=3

​20​……(1)

Vertical forces in equilibrium.

N=mg−Tsin30o=1×10−3

​20​×21​=4.22N

Hence, normal reaction on ball is 4.22N

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The critical radius is 0.146×10⁻⁹m   and activation energy of iron is 0.5327×10⁻⁴⁵Joules

We have some data fields, we need to find the critical radius of iron.

We know very well that critical radius is given by the formula

critical radius=(2×Surface energy × Melting point)/Latent heat of fusion

or in other words, r=(2×S×[tex]T_m[/tex])/Δ[tex]H_l_a_t_e_n_t[/tex]

whereas

Also temperature if given in degree celsius, we need  to convert this into kelvin,

Using the formula,

K=C+273°

=>K=1538°+273K=1811K

So, putting the respective values, we get

=>r= -(2×0.0204×1811)/(-1.85×10⁹×273)

=>r= (73.88/505.05)×10⁻⁹m

=>r=0.146×10⁻⁹m

Now, talking about the activation free energy.

Activation free energy is given by the formula

G=[16×3.142×(critical radius)³×(Melting point)²] / [(3×(Super Colling value)²×(Latent heat of fusion)²]

So, putting the respective values of different quantities, we get

=>G = [16×3.142×(0.146×10⁻⁹)³×(1811)²]/(3×(273)²×(-1.85×10⁹)²

=>G=(407686.907×10⁻²⁷)/(765226.508×10¹⁸)

=>G=0.5327×10⁻⁴⁵Joules

Hence, if nucleation is homogeneous the critical radius r* is 0.146×10⁻⁹m  and the activation free energy ΔG* is 0.5327×10⁻⁴⁵Joules.

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(Complete question) is:

(a) For the solidification of iron, calculate the critical radius r* and the activation free energy ΔG* if nucleation is homogeneous. Values for the latent heat of fusion and surface free energy are –1.85 × 109 J/m3 and 0.204 J/m2, respectively. Use the supercooling value ΔT = 273 K, and the melting point of iron is 1538°C.

According to the given statement 355.9lb the force p for impending motion upward for block b . p.

A force that holds an entity at rest is called static friction. The definition of static friction is: The resistance people feel when they attempt to drag a stationary object across a surface without actually causing any motion between their body and or the surface they are moving the object across.

The block B's weight is 452.73 lb

The total contact surface's coefficient of friction is μ = 0.32

Block A's inclination with respect to the horizontal creates an angle of θ = 10⁰

The friction force f1 is given by,

f1=μN1

Here N1 is the normal on vertical surface.

The friction force f2 is given by,

f2=μN2

Here N2 is the normal on inclined surface.

P = 452.73 lb sin10⁰ + 134.62 lb + .32(452.73 lb) cos 10⁰

Thus the required force is  355.9lb.

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When an image is formed using a converging lens, the image forced is virtual and upright. Thus, answer is A and C.

A convex lens is called as converging lens. A converging lens forms an image at the point where all the rays intersect behind the mirror. The converging lens forms the real, inverted images of the real objects which are further from the focal length (p>f) and virtual, upright and large images of real objects present nearer than the focal length (p<f).

Due to this, the properties of the image formed by the converging lens are virtual and upright.

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The power required to change a sport utility vehicle's speed is 2725 Watt.

A measure of how quickly an object's location can shift in any direction. Speed is defined as the distance traveled divided by the time required to cover that distance. It is a scalar because speed only has a directions and no magnitude. In common usage and kinematics, the speed of an object is a scalar quantity and is defined as the amount of the change within this object's motion per unit of time or over time.

Speed is calculated as follows: speed = distance * time. Knowing the units for distance and time is necessary to calculate the units for speed. The units will be in metres per second (m/s) in this example since the distance is measured in metres (m) and the time is measured in seconds (s).

Speed is a unit of measurement for how quickly something is moving. The most popular speed measurements are miles per hour (mph), kilometers per hour (km/h), and metres per second (m/s).

Mass of the sport utility = 1600kg

Initial velocity (v1) - 15m/s, (152 = 225)

Final velocity (v2) - 40m/s, ( 402 = 1600)

To find the energy required, Kinetic energy (K.E) = 1/2 mv2

K.E = final K.E - initial K.E

= 1/2(v2-v1)

= 1/2×1600×(1600-225)

= 80 × 1375

= 11000 J

Power = Energy (E)/Time (t) = 1100joule/4sec

= 2725Watt.

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In order to reduce reflections, reduce atmospheric haze, and improve color saturation, photographers frequently place polarizing filters, also known as "polarizers," in front of camera lenses.

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She ignores the above average quality of the most of Lian's work, focusing exclusively on what she does incorrectly. Instance of FITB bias is this.

When people's perceptions of the likelihood of an outcome are clouded by similarities between objects or events, this phenomenon is known as the representativeness heuristic bias. People frequently believe that two related things or events are more closely correlated than they actually are. The Stanford Prison Experiment is frequently used as an example of unethical research. She disregards the above average quality of the majority of Lian's work, focusing solely on what she does incorrectly. As a result, the experiment cannot be replicated by researchers today because it does not adhere to the standards established by numerous ethical codes, including the Ethics Code of the American Psychological Association. This is an illustration of FITB bias.

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Projectile motion is the motion in which a body moves in two-dimensional.

Options 2 & 3 are important to keep in kind while working on projectile motion.

Projectile motion is a type of motion that an item or particle (a projectile) experiences when it is launched into a gravitational field, such as from the surface of the Earth, and moves along a curved route only under the influence of gravity. Most calculations make the assumption that air resistance has passive and minimal effects in the specific scenario of Earthmoving like a projectile. Galileo demonstrated that the curved path of objects in projectile motion is a parabola, while it is possible that it might also be a straight line when the object is hurled directly above. Ballistics is the study of such motions, and this trajectory is a ballistics trajectory. Gravity is the only force acting on the item that has any mathematical meaning.

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The force of gravity on a 1-kg mass at earths surface is 9.77 N

The formula for the force of gravity is:

F = G Mm/r²

Where, in this case

G = constant of gravity = 6.674 x 10⁻¹¹ N.m²/kg²
M = mass of earth = 6 x 10²⁴ kg

r = radius of earth = 6.4 x 10⁶ m

m = mass of object = 1 kg

Plug these parameters into the formula:

F = 6.674 x 10⁻¹¹ x  6 x 10²⁴  x 1 / ( 6.4 x 10⁶)²

  = 40 x 10¹³ / (40.96 x 10¹²

  = 9.77 N

Hence, the force of the gravity, or the weight, of a 1-kg mass is  9.77 N

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For laminar flow in a circular pipe, the kinetic energy correction factor is 2

Kinetic energy correction factors for different cases are as follows:

1. For laminar flow in circular pipe =2

2. For laminar flow between parallel plates =1.543

3. For turbulent flow in circular pipe = 1.03-1.06

Laminar flow in fluid dynamics is characterized by fluid particles traveling in layers along clean routes, passing each other without much or any mixing between them. Adjacent layers glide past one another like playing cards when the fluid is moving at moderate speeds because it prefers to flow without lateral mixing. No fluid eddies, swirls, or cross-currents parallel to the flow direction exist. Laminar flow is characterized by relatively ordered fluid particle motion, with particles near a solid surface traveling in straight lines parallel to that surface. High momentum diffusion and low momentum convection are characteristics of laminar flow.

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At an instant when the resistor is dissipating electrical energy at a rate of 0.850 j/s , the speed of the bar is  25.88m/s

The fundamental property of electromagnetism known as Faraday's law, commonly referred to as "Faraday's law," aids in our ability to predict how a magnetic field will interact with an electric circuit to produce an electromotive force (EMF). Electromagnetic induction is the term for this phenomenon.

The electromagnetic induction rules were put forth by Michael Faraday in 1831. The observation or findings of Faraday's experiments are known as the law of electromagnetic induction or Faraday's law. To understand electromagnetic induction, he conducted three key experiments.

There are two laws in Faraday's Laws of Electromagnetic Induction. The induction of emf in a conductor is described by the first law, and the emf that is created in the conductor is quantified by the second law.

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Imagine your local  radio station broadcasting plane Radio waves that are moving in the opposite direction of the x-axis. This is the electrical field for a radio wave: -0.231 N/C.

The physical electric field that surrounds electrically charged particles and acts to either attract or repel all other charged particles in the field is known as an electric field (or E-field).

The electromagnetic spectrum's longest wavelengths, which are found in radio waves, are typically found at frequencies of 300 gigahertz (GHz) and lower. Is called Radio waves.

Here speed c=3.0x10^8 m/s

frequency f = 105.5 MHz =1.055x10^8 Hz

E0 = 0.24 N/C  

(x,t) = kx + wt = 2.21x+6.629*10^8*t

(-3.8,3.5*10^-9) = 2.21*3.8 +6.629*10^8*3.5*10-9 =10.718

electric field is-

0.24x*sin(10.718 rad)= -0.231N/C

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The complete question is -

Radio waves travel through air at approximately the speed of light, c. Imagine your local FM radio station broadcasts plane waves travelling in the negative x-direction with a frequency of f = 105.5 MHz. The waveform of the electric-field component is E(x, t) = E0sin(Φ(x, t)), where Φ(0, 0) = 0 and the amplitude is E0 = 0.24 N/C.

The mysterious light is a wavelength of 464nm

from the condition of the constructive interference:

d sinθ=mλ

for small angles: sinθ=θ=tanθ=x/l

the difference in the separation of the two fringes is,

x₁-x₂=(mλ₁l/d-mλ₂l/d)

x₁-x₂=ml/d(λ₁-λ₂)

(λ₁-λ₂)=(x₁-x₂)d/ml

λ₂=λ₁-(x₁-x₂)d/ml

=(690×10⁻⁹m)-(1.13×10⁻³m)[tex]\frac{0.60*10^{-3} }{2(1.50)}[/tex]

=0.464×10⁻⁶m

=464nm

The wavelength, or the distance over which the shape of a periodic wave repeats, is the spatial period in physics. It is a property of both traveling waves and standing waves, as well as other spatial wave patterns. It is the distance between two successive corresponding locations of the same phase on the wave, such as two neighboring crests, troughs, or zero crossings. The spatial frequency is the reciprocal of the wavelength. The Greek letter lambda () is frequency used to denote wavelength.

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Maximum kinetic energy and maximum potential energy  of  a particle is oscillating with simple harmonic motion (SHM) of amplitude x₀ is = 1/2mω²x₀².

A motion in which the restoring force is directly proportional to the body's displacement from its mean position is known as a simple harmonic motion, or SHM.

This restoring force always moves in the direction of the mean position. A particle moving in simple harmonic motion accelerates as a(t) = -ω²x (t). Here, ω denotes the particle's angular velocity.

Maximum kinetic energy of  a particle is oscillating with simple harmonic motion (SHM) of amplitude x₀ is = 1/2mω²x₀².

Maximum potential energy of  a particle is oscillating with simple harmonic motion (SHM) of amplitude x₀ is = 1/2mω²x₀².

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Answer:

Approximately [tex]6.04\; {\rm m\cdot s^{-2}}[/tex], assuming that [tex]g = 9.81\; {\rm N \cdot kg^{-1}}[/tex] and that the mass of the bag is negligible.

Explanation:

There are two forces on the paper bag:

It is given that the tension in the handle [tex]F(\text{tension})[/tex] should not exceed [tex]298\; {\rm N}[/tex].

Let [tex]g[/tex] denote the gravitational field strength. The mass of the bag and its contents is [tex]m = 18.8\; {\rm kg}[/tex]. Their weight will be [tex]F(\text{weight})= m\, g[/tex].

SInce [tex]F(\text{tension})[/tex] and [tex]F(\text{weight})[/tex] are in opposite directions, the resultant force on the bag will be:

[tex]F(\text{net}) = F(\text{tension}) - F(\text{weight})[/tex].

Divide the net force by mass to find the acceleration [tex]a[/tex] of the bag:

[tex]\begin{aligned}a &= \frac{F(\text{net})}{m} \\ &= \frac{F(\text{tension}) - F(\text{weight})}{m} \\ &= \frac{F(\text{tension}) - m\, g}{m} \\ &= \frac{F(\text{tension})}{m} - g\end{aligned}[/tex].

Since [tex]F(\text{tension}) \le 298\; {\rm N}[/tex]:

[tex]\begin{aligned} a &= \frac{F(\text{tension})}{m} - g \\ &\le \frac{298\; {\rm N}}{18.8\; {\rm kg}} - 9.81\; {\rm N \cdot kg^{-1}} \\ &\approx 6.04\; {\rm N \cdot kg^{-1}} \\ &=6.04\; {\rm m\cdot s^{-2}}\end{aligned}[/tex].

Note the unit conversion: [tex]1\; {\rm N \cdot kg^{-1}} = 1\; {\rm (kg \cdot m\cdot s^{-2})\, kg^{-1}} = 1\; {\rm m\cdot s^{-2}}[/tex].

Answer:

Acceleration = 6.05 m/s²

Explanation:

Fmax = 298 N

m = 18.8 kg

g = 9.8 m/s²

___________

a - ?

According to Newton's 2nd law:

Fmax = m·(g + a)

g + a = Fmax / m

Acceleration:

a = Fmax / m - g

a = 298 / 18.8 - 9.8 ≈ 6.05 m/s²

The normal force on the boy would be 150 N.

What is force?
A force is indeed an influence that can alter an object's motion in physics. A force can cause an object to mass to change its velocity, or accelerate (for example, moving from a state of rest). An intuitive way to describe force is as a push or a pull. A force is a vector quantity because it has both magnitude and the direction. It is computed using the SI unit of newton (N). F is used to represent force (formerly P). The net force acting on an object is proportional to the frequency at which its momentum changes over time, according to Newton's second law in its original formulation. This law suggests that an object's acceleration is directly proportional to the total force acting on it if the object's mass remains constant.

The normal force on the boy is equal to his weight, or 45 lbs (20 kg). This is because the normal force is the force that the surface exerts on the object, in this case the boy, to prevent him from sinking or moving. The force of 150 N applied by the parent does not affect the normal force on the boy; it just provides the force to lift him up.

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The direction in which the swimmer should head in order to arrive at a landing point due east of his starting point is 36.86° or N53.14°E.

How to find out swimmer's direction who is to arrive at a landing point due east of his starting point?

Given:

Velocity of the river: 1.2mi/h

Velocity of the swimmer: 1.2mi/h

The velocity of the river can be represented by:

V= -1.2j (negative sign represents as we head towards south)

So, the velocity of the swimmer can be represented by the vector U as:

U=2cosθi + 2sinθj

Let the true velocity of swimmer be determined as W:

W = U + V

To land at point in the east for the swimmer, he should move horizontally

Hence, the vertical component is equal to zero.

i.e., 2sinθ - 1.2 = 0

2sinθ = 1.2

sinθ = [tex]\frac{1.2}{2}[/tex]

θ = 36.86°

The direction which the swimmer should take is: 36.86° or N53.14°E.

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Every action has an equal and opposite response, according to Newton's Third Law.

Newton's Third Law of Motion is essential for rocket launch. Through action and reaction, a rocket engine generates thrust. Hot exhaust gases from the engine exit via the back of the engine. In response, the opposing reaction produces a propelling force.

Forces always act in pairs that are equal but opposite, according to Newton's third law of motion. Another way to put it is that there is an equal but opposing reaction to every action. In other words, when you push against a wall, the wall pushes back at you with a force equal to your own.

There is an equal and opposite reaction to every action, according to Newton's third law. The implication of the statement is that there are always two forces acting on the two interacting objects. The force acting on the first object is equal in size to the force acting on the second.

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A force of friction on a box going down an incline is 3 lbs (N)

Frictional force is the force created when two surfaces come into contact and slide against one another. The following variables impact the frictional force: Surface roughness and the amount of force pressing them together have the biggest an impact on these forces. friction, a force that prevents two solid objects from rolling or sliding over one another. Although frictional forces, such as the traction required to walk without slipping, can be advantageous, they also pose a significant amount of resistance to motion.

The resistive force of friction (Fr) divided by normal or perpendicular force (N) pushing the objects together yields the coefficient of friction (fr), which is a numerical value. Equation fr = Fr/N serves as a representation of it.

The force that prevents one solid item from moving across another is known as friction. The four basic types of friction are fluid friction, rolling friction, sliding friction, and static friction.

10 lbf = 44.4822161525 N

0.30 us = 0.30 KJ

Weight = 0.25

0.30us-10lbf=3lbs

1. Decide which natural force is present between the object and the earth. Consider a typical force of 0.10 lbf (N)

2. Establish the frictional factor. We can opt for a friction coefficient of 0.30us.

3. Multiplying these figures by one another: (0.10lbf(N)) x 0.30us = 3 pounds (N)

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The right answer, as per the statement, is that copper heats up more quickly than aluminum.

Heat is the result of the movement of kinetic energy within a material or an item, from a power source to a material or an object. Radiation, conduct, and convection are the three mechanisms through which such energy can be transferred.

In order to measure heat, calories are used. The energy it takes to elevate one teaspoon of water by one degree Celsius is one calorie. A sample of water's change in temperature is divided by the water's mass to calculate heat.

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The mass on the moon is  22.80kg.

The Moon's mass the only naturally occurring satellite of the Earth, has a mass of roughly 7.4 x 10²²kg. Although the moon is the fifth largest satellite in the solar system, it is the largest relative to the planet it circles because of its mass, which is 1/4 that of Earth.

We are given that ,

Mass on the earth = 150 kg

Thus, to calculate the mass on moon of 150 kg we can use the formula,

Mass on the moon =(mass on the earth)/(9.8m/s²)×1.622m/s

Mass on the moon =(150kg)/(9.8m/s²)×1.622m/s²

Mass on the moon = 22.80kg

Thus ,the mass on the moon is  22.80kg.

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[tex]1.73×10^-5[/tex] s after closing the switch will the current through the inductor reach one-half of its maximum value.

Electric current is a term used to describe how much electricity flows across a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). The more electricity flowing across the circuit, the higher the ampere value.

While electrons move from negative to positive, current moves from positive to negative. The quantity of electrons that flow through a conductor's cross section in a second defines current. The unit of measurement for current is the ampere, abbreviated "amps." The letter "A" is used to represent amps.

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There needs to be some form of differentiation between what size makes a planet because Eris was larger than Pluto and other planets were only marginally smaller than Pluto.

Asteroid: A relatively small, stony object that circles a star; asteroids are classified as "small solar system bodies" by the government.

Comet :A comet is a tiny, ice object that revolves around a star. Comets are classified as "small solar system bodies," the same category as asteroids.

Dwarf planet: An object that orbits the Sun and is sufficiently large that gravity has shaped it almost spherically, but which does not meet the criteria for designation as a planet because it has not yet cleared its orbital neighborhood. The asteroid Ceres and the Kuiper belt objects Pluto, Eris, Haumea, and Makemake are classified as dwarf planets in our solar system.

Meteor: An explosion of light brought on by a space particle burning up in our atmosphere.

A meteorite is a space rock that falls on Earth.

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a. The angle does the wheel turn in the first 2.0 s is 1.7507 rev.

b. The angular speed at that time is 3.14 rad/s.

in a circular motion, the angular change in an object moving in a circle in one unit of time. The size of this angle is the angle of travel in question in the problem. Circular motion consists of uniform circular motion and uniformly changing. In this problem using the concept of uniformly changing circular motion because the angular velocity changes, then:

a.  The angle does the wheel turn in the first 2.0 s is:

Δθ = ω₀t + 1/2 αt²

= (1.0 rad/s) (2.0 s) + 1/2 (4.5 rad/s²) (2)²

= 11 rad= 1.7507 rev

b. The angular speed at that time is:

ω = 2π/T

= (2 x 3.14) / 2

= 3.14 rad/s

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