Why do we think tiny quantum ripples should have been present in the very early universe?.

Answer:

No it wont help you sleep better

Explination:

Velocity of the satellite that is orbiting earth is 83.45m/s, which makes the velocity of the rivet relative before striking also 83.45m/s and the time duration of collision is 4.53× 10⁻⁵ s. The avg force that is exerted by the rivet on the satellite is 9.27N and the energy that is generated by the collision is 1.63J.

a) Velocity of the satellite in an orbit 900 km above Earth's surface can be calculated as follows: Formula: `v = sqrt(GM/r)` Where,v = velocity, M = Mass of Earth, r = radius of the orbit (r = R + h)R = radius of the Earth = 6.37 × 10⁶ mh = height above Earth's surface = 900 km = 9 × 10⁵ mG = 6.67 × 10⁻¹¹ N m²/kg²By substituting the given values, we getv = sqrt((6.67 × 10⁻¹¹ × 5.97 × 10²⁴)/(6.37 × 10⁶ + 9 × 10⁵))= sqrt(6.965 × 10³) = 83.45 m/s.

Therefore, the velocity of the satellite in an orbit 900 km above Earth's surface is 83.45 m/s.

b) Velocity of the rivet relative to the satellite just before striking it can be calculated as follows: Velocity of the rivet, `v_rivet = v_satellite * sin(θ)`Where, v_satellite = 83.45 m/sθ = 90°By substituting the given values, we getv_rivet = 83.45 * sin 90°= 83.45 m/s.

Therefore, the velocity of the rivet relative to the satellite just before striking it is 83.45 m/s.

c) The time duration of collision, `Δt` can be calculated as follows:Δt = (2 * r_rivet)/v_rivet, Where,r_rivet = radius of the rivet = 3/2 × 10⁻³ m. By substituting the given values, we getΔt = (2 * 3/2 × 10⁻³)/83.45= 4.53 × 10⁻⁵ s.

Therefore, the time duration of collision is 4.53 × 10⁻⁵ s.

d) The average force exerted by the rivet on the satellite, `F` can be calculated as follows: F = m_rivet * Δv/ΔtWhere,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/sΔt = time duration of collision = 4.53 × 10⁻⁵ sBy substituting the given values, we get F = (0.5 × 10⁻³ * 83.45)/4.53 × 10⁻⁵= 9.27 N.

Therefore, the average force exerted by the rivet on the satellite is 9.27 N.

e) The energy generated by the collision, `E` can be calculated as follows: E = (1/2) * m_rivet * Δv²Where,m_rivet = mass of the rivet = 0.5 g = 0.5 × 10⁻³ kgΔv = change in velocity of the rivet = 83.45 m/s. By substituting the given values, we getE = (1/2) * 0.5 × 10⁻³ * 83.45²= 1.63 J.

Therefore, the energy generated by the collision is 1.63 J.

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Answer:

0.9 m

Explanation:

Hooke’s Law

\(\large\boxed{F = ke}\)

where:

Given values:

Substitute the given values into the formula to find k:

\(\implies 2.0=0.30k\)

\(\implies k=\dfrac{2.0}{0.30}\)

\(\implies k=\dfrac{20}{3}\; \sf N/m\)

To find the extension if the force applied is 6 N, substitute the found value of k and the given value of F into the formula and solve for e:

\(\implies 6=\dfrac{20}{3}e\)

\(\implies 18=20e\)

\(\implies e=\dfrac{18}{20}\)

\(\implies e=0.9\; \sf m\)

The all forces acting on the steel beam are weight, tension in the cable and air resistance

The forces acting on the steel beam are:

Weight: The force of gravity acting on the steel beam, pulling it downwards.

Tension in the cable: The force exerted by the cable, which is holding the steel beam up and preventing it from falling.

Air resistance: The resistance of the air to the motion of the steel beam.

To draw a free-body diagram of the object, we represent the object as a point and show all the forces acting on it as arrows pointing away from the point. The size of the arrows represents the magnitude of the forces.

The free body diagram is shown in the figure

Where:

T represents the tension force in the cable

W represents the weight force of the steel beam

Note that the air resistance force is usually neglected in such diagrams, as it is often relatively small compared to the other forces.

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Answer:

C. Compression

Explanation:

✧✧✧EMOTIONAL DAMAGE✧✧✧

kleann

The net force on the block of mass 2 m moving upward at constant speed V is B, 2 mg.

Since the masses are moving upward at constant speed, the net force on each of the blocks must be zero.

Considering the block of mass 2m, the net force acting on it is the tension T₁ in the string pulling it upward minus the force of gravity pulling it downward.

Thus:

T₁ - (2m)g = 0, where g is the acceleration due to gravity.

T₁ = (2m)g

Now, considering the block of mass 3m, the net force acting on it is the tension T₂ in the string pulling it upward minus the force of gravity pulling it downward.

Thus:

T₂ - (3m)g = 0

T₂ = (3m)g

Finally, considering the block of mass m, the net force acting on it is the force of gravity pulling it downward minus the tension T₁  in the string pulling it upward.

Thus:

(m)g - T₁  = 0

Substituting T₁  = (2m)g:

(m)g - (2m)g = -mg

Therefore, the net force on the block of mass 2m is mg downward.

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The complete question is:

3 blocks with masses m to 2m and 3m are connected by Strings as shown in the figure after an upward force f is applied on block and the masses move upward at constant speed V what is the net force on the block of mass 2 m.

A Zero

B 2 mg

C 3 mg

D 6 mg

Explanation:

"1 meter per second per second" means acceleration of an object. It is equal to the rate of change of velocity. Its SI unit is \(m/s^2\).

It is simply given by :

\(a=\dfrac{dv}{dt}\)

dv is change in velocity

dt is small interval of time

"1 meter per second per second" means that the velocity of an object can increase by 1 meter per second.

If energy is conserved, then initial (PE + KE) = final (PE + KE). So, the correct option is A.

The law of conservation of energy states that, energy can neither be created nor be destroyed, but can be transformed from one form to another.

Here,

According to law of conservation of energy,

The total energy of an isolated system remains constant. That means, the total energy of the system in the initial state will be same as that in the final state.

The total mechanical energy is the sum of kinetic energy and potential energy.

TE = KE + PE

Therefore, the energy to be conserved in the system,

Initial TE = Final TE

So, Initial (KE + PE) = Final (KE + PE)

Hence,

If energy is conserved, then initial (PE + KE) = final (PE + KE).

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For the 100 kg roller coaster that comes over the first hill of height 20 meters at 2 m/s, we have:

1) The total energy for the roller coaster at the initial point is 19820 J

2) The potential energy at point A is 19620 J

3) The kinetic energy at point B is 10010 J

4) The potential energy at point C is zero

5) The kinetic energy at point C is 19820 J

6) The velocity of the roller coaster at point C is 19.91 m/s

1) The total energy for the roller coaster at the initial point can be found as follows:

\( E_{t} = KE_{i} + PE_{i} \)

Where:

KE: is the kinetic energy = (1/2)mv₀²

m: is the mass of the roller coaster = 100 kg

v₀: is the initial velocity = 2 m/s

PE: is the potential energy = mgh

g: is the acceleration due to gravity = 9.81 m/s²

h: is the height = 20 m

The total energy is:

\( E_{t} = KE_{i} + PE_{i} = \frac{1}{2}mv_{0}^{2} + mgh = \frac{1}{2}*100 kg*(2 m/s)^{2} + 100 kg*9.81 m/s^{2}*20 m = 19820 J \)

Hence, the total energy for the roller coaster at the initial point is 19820 J.

2) The potential energy at point A is:

\( PE_{A} = mgh_{A} = 100 kg*9.81 m/s^{2}*20 m = 19620 J \)

Then, the potential energy at point A is 19620 J.

3) The kinetic energy at point B is the following:

\( KE_{A} + PE_{A} = KE_{B} + PE_{B} \)

\( KE_{B} = KE_{A} + PE_{A} - PE_{B} \)

Since

\( KE_{A} + PE_{A} = KE_{i} + PE_{i} \)

we have:

\( KE_{B} = KE_{i} + PE_{i} - PE_{B} =  19820 J - mgh_{B} = 19820 J - 100kg*9.81m/s^{2}*10 m = 10010 J \)

Hence, the kinetic energy at point B is 10010 J.

4) The potential energy at point C is zero because h = 0 meters.

\( PE_{C} = mgh = 100 kg*9.81 m/s^{2}*0 m = 0 J \)

5) The kinetic energy of the roller coaster at point C is:

\( KE_{i} + PE_{i} = KE_{C} + PE_{C} \)            

\( KE_{C} = KE_{i} + PE_{i} = 19820 J \)      

Therefore, the kinetic energy at point C is 19820 J.

6) The velocity of the roller coaster at point C is given by:

\( KE_{C} = \frac{1}{2}mv_{C}^{2} \)

\( v_{C} = \sqrt{\frac{2KE_{C}}{m}} = \sqrt{\frac{2*19820 J}{100 kg}} = 19.91 m/s \)

Hence, the velocity of the roller coaster at point C is 19.91 m/s.

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Answer:

If you want definition, here it is:

Dispersion is defined to be the spreading of white light into its full spectrum of wavelengths. Refraction is responsible for dispersion in rainbows and many other situations. The angle of refraction depends on the index of refraction, as we saw in The Law of Refraction.

The word intermolecular is made up of two parts - "inter" meaning between and "molecular" meaning relating to molecules. Intermolecular forces of attraction refer to the forces that exist between molecules.

These forces are responsible for the physical properties of substances such as their boiling and melting points. There are different types of intermolecular forces such as van der Waals forces, dipole-dipole forces, and hydrogen bonding. Van der Waals forces are the weakest and result from the temporary dipoles that occur in molecules. Dipole-dipole forces are stronger and result from the attraction between polar molecules. Hydrogen bonding is the strongest type of intermolecular force and occurs when hydrogen is bonded to a highly electronegative atom such as nitrogen, oxygen, or fluorine. This results in a strong dipole-dipole interaction between molecules.

Analyze the parts of the word "intermolecular" and define intermolecular forces of attraction.

The word "intermolecular" can be broken down into two parts:

1. "Inter" - This prefix means "between" or "among."
2. "Molecular" - This term refers to molecules, which are the smallest units of a substance that still retain its chemical properties.

When combined, "intermolecular" describes something that occurs between or among molecules.

Now let's define intermolecular forces of attraction:

Intermolecular forces of attraction are the forces that hold molecules together in a substance. These forces result from the attraction between opposite charges in the molecules, and they play a crucial role in determining the physical properties of substances, such as their boiling points, melting points, and density. Some common types of intermolecular forces include hydrogen bonding, dipole-dipole interactions, and London dispersion forces.

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The labels A and B in the triangle's supplied picture stand for the transitions from a gas to a liquid and a gas to a solid, respectively.

Arrow A, which descends one side of the triangle from the top labelled "gas," symbolises condensation, the transformation of a gas into a liquid.

When a gas loses energy and changes into a liquid state, condensation takes place.

The transition from a gas to a solid is shown by arrow B, which also descends from the top and is labelled "gas" but is located on a different side of the triangle. Deposition is the term for this alteration. When a gas loses energy, it decomposes into a solid without changing to a liquid state, which is known as deposition.

Arrow C travels horizontally from the point designated "liquid" on the bottom of the triangle to the place designated "solid." This illustrates freezing, the transition from a liquid to a solid state. When a liquid loses energy, it freezes and changes from a liquid state to a solid state.

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Answer:

See the answers below.

Explanation:

A transformer is a static electrical machine, it should be borne in mind that although the voltage can be increased or decreased, the power must always be equal.

For this case:

The power in the first coil can be calculated by means of the following formula.

\(P=V*I\\\)

where:

V = voltage = 12 [V]

I = current =2 [A]

a)

Therefore the power:

\(P=12*2\\P=24[W]\)

b)

Now in the second coil, the power must be the same:

\(P_{secondcoil}=V*I\\24=144*I_{secondcoil}\\I_{secondcoil}=24/144\\I_{secondcoil}=0.166[A]\)

For r > R, the electric field is given by:

E = λ_total / (2πε₀r).

To summarize:

For r < R: E = λ / (2πε₀r).

For r > R: E = λ_total / (2πε₀r).

Let's consider a cylindrical Gaussian surface with radius r and length L, where L is much greater than the length of the charge distribution. The surface is coaxial with the distribution, meaning it shares the same axis.

For r < R:

Inside the charge distribution, we can imagine a cylindrical Gaussian surface of radius r and length L, which is entirely enclosed within the charge distribution. Gauss's law states that the electric flux through a closed surface is equal to the charge enclosed divided by the permittivity of free space (ε₀). Since the electric field is radially symmetric, it will have a constant magnitude at every point on the Gaussian surface.

The charge enclosed by the Gaussian surface is given by:

Q_enclosed = λ * L,

where λ is the charge per unit length of the distribution.

By Gauss's law, the electric flux through the Gaussian surface is:

Φ = E * A,

where E is the magnitude of the electric field and A is the area of the Gaussian surface.

Since the electric field is constant over the entire surface, we can write:

Φ = E * A = E * 2πrL,

According to Gauss's law, the electric flux is also equal to the charge enclosed divided by ε₀:

Φ = Q_enclosed / ε₀ = (λ * L) / ε₀.

Setting the two expressions for Φ equal to each other:

E * 2πrL = (λ * L) / ε₀,

Simplifying:

E = λ / (2πε₀r).

Therefore, for r < R, the electric field is given by:

E = λ / (2πε₀r).

For r > R:

Outside the charge distribution, the enclosed charge is the total charge of the distribution. However, instead of using the charge per unit length (λ), it is more convenient to use the total charge (Q) divided by the length of the distribution (L). This quantity is the linear charge density, denoted as λ_total.

The charge enclosed by the Gaussian surface is:

Q_enclosed = λ_total * L.

Applying Gauss's law again, the electric flux through the Gaussian surface is:

Φ = E * A = E * 2πrL,

Equating Φ to Q_enclosed / ε₀:

E * 2πrL = (λ_total * L) / ε₀.

Simplifying:

E = λ_total / (2πε₀r).

Therefore, for r > R, the electric field is given by:

E = λ_total / (2πε₀r).

To summarize:

For r < R: E = λ / (2πε₀r).

For r > R: E = λ_total / (2πε₀r).

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Using this data the quantity which is trying to find is average speed thus option C is correct.

Average speed is defined as the total distance traveled in total time taken it means that we can calculate the average speed obtained by an object.

Average Speed = Total distance travelled/Total time taken

It's S.I unit is m/s

Using this data the quantity which is trying to find is average speed thus option c is correct.

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The induced current moves in a clockwise direction.

Induced current is formed in a conductor as a result of a change in the magnetic flux flowing through the area.

The magnetic field vector in the conducting loop is pointing straight up.

A current is induced in the magnetic field as a result of the constant strength increase.

The induced current moves in a clockwise direction when seen from above.

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Answer:

Plasma is by far the most common form of matter. Plasma in the stars and in the tenuous space between them makes up over 99% of the visible universe and perhaps most of that which is not visible. On earth we live upon an island of "ordinary" matter.

The symbols that completes the given nuclear equation are written as follows:

An alpha decay can be defined as a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle, thereby, producing chemical elements with a different atomic nucleus.

During an alpha decay, the radioactive element has a mass number that is decreased by four (4) and an atomic number that is decreased by two (2), which is typically an atom of Helium (⁴He₂).

A beta particle can be defined as an isotope which typically undergoes radioactive decay through the emission of a radiation with a -1 charge. This ultimately implies that, an atom of neutron becomes a proton and an electron (₀e⁻¹) and an atom of proton also becomes a neutron and a positron (⁰⁻e₁⁺) during beta decay.

In conclusion, the symbols that completes the given nuclear equation are written as follows:

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Explanation:

this might help you i think so

The  distance from Earth to the sun is approximately 1.5 x 10^8 kilometers.

To convert miles to kilometers, we can use the conversion factor 1 mile = 1.609344 kilometers.

So, to find the distance from Earth to the sun in kilometers, we can multiply the given distance in miles by the conversion factor:

d (km) = 9.3 x 10^7 miles x 1.609344 km/mile
d (km) = 1.496 x 10^8 km

Therefore, the distance from Earth to the sun is approximately 1.5 x 10^8 kilometers.

The closest answer choice is A) 1.5 x 10^8 km, which is the correct answer.

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The reaction is the force applied by the player's glove on the ball.

Newton's third law of motion states that when one body exerts a force on the other body, the first body experiences a force which is equal in magnitude in the opposite direction of the force which is exerted”.

The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

The direction of the force on the first object is opposite to the direction of the force on the second object.

According to this question, a player catches a ball. The action is the force to the ball against the player's glove while the reaction or opposite force will be the player's glove against the ball.

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Running at 11 m/s around the curve of an olympic track with a radius of 36.5 m results in a centripetal acceleration of 3.31 m/s2. The pace at which the velocity changes in mechanics is known as acceleration.

The vector quantity of accelerations (in that they have magnitude and direction). The direction of the net force imposed on an object determines its acceleration in relation to that force. the amount of acceleration experienced by an item. A force that causes a body to follow an arc is known as a centripetal force (from the Latin centrum, "centre," and petere, "to pursue").

centripetal acceleration equals v2/r

Centripetal acceleration is (11)2/36.5, and centripetal acceleration is 121/36.5, which equals 3.31 m/s2.

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The correct answer to this open question is the following.

Although there are no options attached we can say the following.

The structure of the article makes the author's argument more effective because the author shares factors that drive people from behaving correctly to behave incorrectly. And these factors are the following. Anonymity when people hide to do damage. Dehumanizing and offend others. Make people feel there are unworthy and despicable. Another one, power and control of people and situations.

In October 2004, author Melissa Dittmann wrote the article "What Makes Good People Do Bad Things?" in the American Psychological Association (APA).  In her article, she refers to the fact that under certain circumstances, good people can end up doing horrible things. Social situations force normal people to transform their behavior and they cause harm to others. The specific case she mentions is the abuse of Iraqi prisoners at Aby Ghraib. This situation was documented by Philip G. Zimbardo, professor of Standford University.

Zimbardo's classic prisoner study at Stanford University revealed how social roles influence our behavior. It was conducted by Philip Zimbardo in 1971. It was used to illustrate the theory of Cognitive Dissonance and the power of authority.

The abuse scandal in Abu Gharib prison in Iraq (2003)  depicted soldiers abusing detainees. Eleven US soldiers were convicted for crimes committed against prisoners.

The speed of the  Toyota Corolla would have  been 143.9 mph.

The acceleration of the F-15 can be calculated as follows:

Acceleration = Velocity Change / Time = (Take-off Speed) / Time

where;

Take-off Speed = √(2dg /t²)

Take-off Speed = √(2 x  (270 ft)  x 32.2 ft/s² / (2 s)²)

T  = √(17496) = 131.6 ft/s

Acceleration = Velocity Change / Time

= (131.6 ft/s) / (2 s) = 65.8 ft/s²

We can use the same acceleration to launch the Toyota Corolla, and calculate its final velocity:

Final Velocity = Initial Velocity + Acceleration x Time

where;

Final Velocity = 0 + (65.8 ft/s²) * (2 s) = 131.6 ft/s

Finally, we can convert the velocity from feet per second to miles per hour:

Velocity (mph) = Velocity (ft/s) x (1 hour/3600 s) x (5280 ft/mile)

= 131.6 ft/s x  (1 hour/3600 s)  x (5280 ft/mile)

= 143.9 mph

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Answer:

yes

Explanation:

this is true don't believe other people whether right or wrong

Answer:

The rock would orbit the earth at a velocity of 17,500 MPH next to the satellite. 

Answer:

sequence

Explanation:

sequences are the way in which things are ordered, for example: 1, 2, 3, 4 is a sequence:)

The voltage across the 20 Ω resistor is calculated as V₁ = 3.69 V (approx). It is given that circuit operates in sinusoidal steady state and frequency = 32/ 24 ω.

Given circuit is as shown below: We are given the frequency ω = 32/24 = 4/3 kHz. Let us consider the mesh current as shown below:

Applying KVL to the mesh we get:20I₁ - 30I₂ + 10(I₁ - I₂) = 0.⇒ 30I2 - 20I₁ = 10(I₁ - I₂).⇒ 40I₁ - 40I₂ = 0.⇒ I₁ = I₂. So, the mesh current is the same through both meshes. Therefore, voltage across 20 Ω resistor = V₁ = I₁(20 Ω) = I₂(20 Ω)

Hence, the voltage across 20 Ω resistor is, V₁ = I₂(20 Ω). Therefore, V₁ = I₂ × 20 = (240/650) × 20 = 48/13 V = 3.69 V (approx)

Therefore, the voltage across the 20 Ω resistor is V₁ = 3.69 V (approx).

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The voltage is \($1133.2 + j413.4 , \text{V}$\).

Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light.

Given the circuit as shown below and it operates in the sinusoidal steady state with a value of \($\omega = \frac{32}{24}$\).

The voltage in the circuit can be calculated as shown below, where \($V$\) is the voltage.

Voltage calculation:

\(V = 50(\cos(20) + j\sin(20)) \times 24\Omega$\\$V = 1200(\cos(20) + j\sin(20))$\\$V = 1200\cos(20) + j1200\sin(20)$\\$V = 1133.2 + j413.4$\)

The voltage is \($1133.2 + j413.4 , \text{V}$\).

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