a turntable rotates through 5.0 rad in 2.8 s as it is accelerated uniformly from rest. what is the angular velocity at the end of that time?

Answer:

I. 56

II. c is the speed of light in vacuum.

III. 385.180×10¯²⁷ Kg.

Explanation:

I. Determination of the value of p.

²³⁸₉₂U + ¹₀n —> ¹³⁹ₚBa + ⁹⁷₃₆Kr + 3 ¹₀n

92 + 0 = p + 36 + 3(0)

92 = p + 36

Collect like terms

92 – 36 = p

56 = p

Therefore, the value of p is 56

II. Determination of the meaning of c

ΔE = Δmc²

In the Einstein's equation above,

E => is the energy

m => is the mass

c => is the speed of light in vacuum.

III. Determination of the total mass of the element formed after the reaction.

From the reaction above, the elements formed after the reaction are:

Barium–139 and Krypton–97. Thus, we can obtain the total mass of the elements formed as follow:

Mass of Ba–139 = 232.560×10¯²⁷ Kg

Mass of Kr–97 = 152.620×10¯²⁷ Kg

Total mass =?

Total mass = mass of Ba–139 + mass of Kr–97

Total mass = 232.560×10¯²⁷ + 152.620×10¯²⁷

Total mass = 385.180×10¯²⁷ Kg

Answer:

brainless plsss

Answer:

The answer is 315 km

Proteins and complexes coordinate to maintain Ran-GTP gradient.

Ran-GTP is a small GTPase that plays an essential role in nucleocytoplasmic transport. The concentration gradient of Ran-GTP across the nuclear envelope is maintained by the concerted action of several proteins. Here are the steps involved:

Overall, the maintenance of the Ran-GTP gradient across the nuclear envelope is essential for proper nucleocytoplasmic transport, and the coordinated actions of several proteins and complexes are required to achieve this.

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Answer:

C)No

Explanation:

When moving oxidation numbers down as subscripts in an ionic bond, you do not include the charge either positive or negative.

The process of moving oxidation number down as subscript is known as exchange of valency.

The combining power is used in exchanging valency and this is oxidation number exchanged. The number corresponds to the number of electrons usually lost or gained or shared by atoms of elements during chemical combination or the number of positive or negative charges carried by ions.

The combining power is exchanged as simple whole number ratio during the formation of chemical formulae of compounds.

Explanation:

It is given that,

Initial velocity of the projectile, u = 142 ft/s

Initial height off the ground, \(h_o = 93\ feet\)

We need to find the height of the projectile t seconds after its shot. It is a concept of kinematics. The equation of projectile is given by the formula as follows :

\(h= -16t^2+ut+h_o\)

t is time in seconds

So, putting all the values we get :

\(h= -16t^2+128t+112\)

Hence, this is the required solution.

Polymers that have grafting refer to the process of attaching a side chain or branch to the main polymer chain, resulting in a branched structure.

This branching can occur at multiple points along the main chain, resulting in a complex and highly branched structure. On the other hand, polymers that have branching refer to the natural occurrence of branches along the main polymer chain, without the addition of side chains.

This branching can occur randomly, resulting in a more linear or slightly branched structure. polymers with grafting involve the intentional addition of side chains to the main chain, resulting in a highly branched structure, while polymers with branching refer to the natural occurrence of branches along the main chain.

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Answer:it's a chemical change.physical changes occur without 2 or more reactants,a reaction,and a product

Explanation:

The direction of this current's magnetic force on an electron that is moving perpendicular to the page and outward from it on the left side of the wire is downward.

What is Magnetic force?

The force exerted by a magnetic field on a moving charged particle is known as a magnetic force. It is described by the formula F = q(v x B), where F is the magnetic force, q is the particle's charge, v is the particle's velocity, and B is the magnetic field.

The right-hand rule states that when a wire-carrying current is held in the right hand with the thumb pointing in the direction of the current, the fingers will curl in the direction of the magnetic field lines created by the current.

The magnetic field lines will create clockwise circles around the wire because, in this instance, the current flows from the top of the page downward.

Now imagine an electron on the left side of the wire traveling perpendicular to the page. The electron will experience a magnetic force since it travels in a direction perpendicular to both the magnetic field and the current.

We can use the left-hand rule for a negative charge to determine the direction of this force. If the left hand is held with the fingers pointing toward the magnetic field and the thumb pointing toward the electron's velocity, the palm will face the order of the force on the electron.

The thumb points to the left because the electron leaves to the left. The fingers curl because the magnetic field lines go clockwise around the wire. Therefore, the magnetic force acting on the electron is directed downward because the palm is facing downward.

Therefore, the magnetic pull exerted by this current on an electron traveling outward and perpendicular to the page on the wire's left side is directed downward.

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While most pitches are encoded directly by the placement of a frequency on the membrane, low-frequency tones are encoded by the phase-locking of the auditory nerve fibers.

This means that the nerve fibers fire in synchrony with the sound wave and the brain can then interpret this as a low-frequency tone. This is because the membrane's responsiveness decreases at lower frequencies, making it more difficult for it to accurately encode the pitch information.
While most pitches are encoded directly by the placement of a frequency on the membrane, low-frequency tones are encoded by the timing of the membrane's vibrations, also known as phase-locking. This explanation means that low-frequency sounds are represented by the synchronization of the membrane's movements with the incoming sound waves, allowing for accurate encoding of these lower pitches.

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Answer: Both the north and south pole

The magnitude of the electric field at the midpoint between the two charged rings is zero.

The magnitude of the electric field at the midpoint between two charged rings can be calculated using the principle of superposition.

The electric field at the midpoint will be the sum of the electric fields produced by each ring individually. Since the charges on the rings are equal in magnitude and opposite in sign, the electric fields produced by each ring will have the same magnitude but point in opposite directions.

The electric field produced by a uniformly charged ring at a point on its axis can be calculated using the formula:

\(E = (k * Q * x) / (2 * π * ε * R^2 * (R^2 + x^2)^(3/2))\)

Where:

E is the electric field

k is Coulomb's constant\((8.99 x 10^9 N m^2/C^2)\)

Q is the charge on the ring

x is the distance from the center of the ring to the point on its axis

ε is the permittivity of free space \((8.85 x 10^-12 C^2/N m^2)\)

R is the radius of the ring

Since the rings have the same charge and are equidistant from the midpoint, the electric fields produced by each ring will cancel each other out, resulting in a net electric field of zero at the midpoint. Therefore, the magnitude of the electric field at the midpoint between the two charged rings is zero.

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Contaminants are substances or agents that are present in a material or environment, frequently in unwanted or hazardous proportions, and which may harm the environment, and human health.

They include pollutants that are released from industrial operations, agricultural practices, or human activities, such as pesticides, heavy metals, volatile organic compounds (VOCs), and polychlorinated biphenyls (PCBs).

They include pollutants that are released from industrial operations, agricultural practices, or human activities, such as pesticides, heavy metals, volatile organic compounds (VOCs), and polychlorinated biphenyls (PCBs).

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Answer:

We kindly invite you to read carefully the explanation and check the image attached below.

Explanation:

According to this problem, the rocket is accelerated uniformly due to thrust during 30 seconds and after that is decelerated due to gravity. The velocity as function of initial velocity, acceleration and time is:

\(v_{f} = v_{o}+a\cdot (t-t_{o})\) (1)

Where:

\(v_{o}\) - Initial velocity, measured in meters per second.

\(v_{f}\) - Final velocity, measured in meters per second.

\(a\) - Acceleration, measured in meters per square second.

\(t_{o}\) - Initial time, measured in seconds.

\(t\) - Final time, measured in seconds.

Now we obtain the kinematic equations for thrust and free fall stages:

Thrust (\(v_{o} = 0\,\frac{m}{s}\), \(a = 30\,\frac{m}{s^{2}}\), \(t_{o} = 0\,s\), \(0\,s\le t< 30\,s\))

\(v = 30\cdot t\) (2)

Free fall (\(v_{o} = 900\,\frac{m}{s}\), \(a = -9.807\,\frac{m}{s}\), \(t_{o} = 30\,s\), \(30\,s \le t \le 120\,s\))

\(v = 900-9.81\cdot (t-30)\) (3)

Now we created the graph speed-time, which can be seen below.

Yes, the forced oscillations of a system will depend on their natural frequency.

This is because the natural frequency represents the frequency at which the system will oscillate with maximum amplitude when subjected to a disturbance. When a system is subjected to a forcing function, such as an external periodic force, the amplitude of the system's oscillations will depend on the frequency of the forcing function relative to the system's natural frequency.

If the frequency of the forcing function is close to the natural frequency of the system, the amplitude of the oscillations will be large, and the system will experience resonance. On the other hand, if the frequency of the forcing function is significantly different from the natural frequency of the system, the amplitude of the oscillations will be smaller.

Therefore, the forced oscillations of a system are highly dependent on their natural frequency.

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Answer:

1) correct answer is ii  larger size

2) false, 3) false, 4) true, 5) true, 6) true

Explanation:

In this exercise, the answer is asked if the statement is true.

1) in the rapid cooling speed, there is no thermodynamic equilibrium, so the secondary phases do not have time to transform into the main one, therefore many phases appear in the products,

the correct answer is ii

2) False. The transformation of a material to the glass state requires a fixed temperature and rapid changes to reach this temperature,

3) False. The most stable state is the crystalline state, the glass states are metastable, their Gibbs energy is not the lowest possible and they must transition to the crystalline state over time, it can be years or centuries.

4) True. The melting and freezing temperatures change for each material, within the same material it always has the same value, since it corresponds to a change in the state of the system.

5) true. Cast iron is called gray because of the impurities inside that have not had time to move due to rapid cooling.

6) True. The microstructure is reduced in the process of cooling and heating

The gauge pressure required to give an area of contact of 106 cm2 for each tire is 35 lb/in².

Force  is a push or pulls upon an object because of the object's interplay with some different object. stress is a energy that could change the movement of an object. A pressure can cause an object with mass to alternate its pace, i.e., to reinforce up. strain also can be described intuitively as a push or a pull. A force has every significance and route, making it a vector amount.

Calculation:-

P = F/A

The force acting on the car is supported equally on four tires

The mass on each tire is ;

m = Total mass/4

= 1440 kg/4

= 360 kg

Thus, the force on each tire is

F = mg

  = (360 kg)(9.8)

 = 3528 N

The gauge pressure is 35 lb/in²

The phrase 'Force' has a unique meaning. At this degree, it is absolutely appropriate to describe a force as a push or a pull. A force is exerted on one object through another. The concept of a force isn't always restricted to living matters or non-living matters.

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The maximum load (in newtons) the raft can support is  7830kg.

What is buoyancy force?

A fully or partially submerged object is subject to an upward force known as the buoyant force. Upthrust is another name for this thrust upward. A body that is partially or completely submerged in a fluid gives the impression of losing weight because of the buoyant force, or that it is lighter.

What is density?

Density Symbol: D or Formula for Density: D = m/V, where D stands for density, m for mass, and V for volume.

Buoyancy is the upward force that an object feels from the water and when compared to the weight of the object.

Buoyancy force can be calculated with the equation

Fb=Vs×D×g

where F b is the buoyancy force, V s  is the submerged volume, D is the density of the fluid the object is submerged in, and g is the force of gravity.

It can also be given as the sum of the weight of the raft and the weight of the load. That is,

W raft +W load  = Fb=Vs×D×g.

The weight of the raft

W raft=V raft Draft g.

At maximum load, Volume of water displaced is equal to volume of the raft.

max(W load )=(D water −D raft )Vraft g.

=(1020kg/m 3 −150kg/m 3 )(3m×3m×1m)g

=7830kg.

Hence, the maximum load the raft can carry sea water so that the plank just floats in water is 7830kg.

Therefore, the maximum load (in newtons) the raft can support is  7830kg.

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Answer:

I think it is 2m/s2

Explanation:

Have a great day:)

Answer:

Oxygen is an element that can be a solid, liquid or gas depending on its temperature and pressure. In the atmosphere it is found as a gas, more specifically, a diatomic gas. This means that two oxygen atoms are connected together in a covalent double bond.

Answer:

Permissive - allowing or characterized by great or excessive freedom of behavior.

Explanation:

Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!

Answer:

I can't read it if you zoom in its still blurry

Explanation:

read the question to me and I'll try to answer it thx

1. Radial velocity

2. transit

3. Direct imaging

4. gravitational microlensing

5. astrometry

The Total heat required to transform 8 kg of liquid water at 33 °C to the ice at 0 °C is 13,019 J.

The heat required to be removed from a liquid to transform it into a solid is called the heat of fusion. For water, the heat of fusion is approximately 334 J/g. To calculate the amount of heat required to transform 8 kg of liquid water at 33 °C to the ice at 0 °C, we'll need to take into account both the heat of fusion and the heat required to lower the temperature of the water from 33 °C to 0 °C.

First, we'll calculate the heat required to lower the temperature of the water from 33 °C to 0 °C. This can be calculated using the formula:

Q = mcΔT

where Q is the heat required, m is the mass of the water (8 kg), c is the specific heat capacity of water (4.186 J/g·°C), and ΔT is the change in temperature (3temperature change

Q = (8 kg)(4.186 J/g·°C)(33 °C) = 10,347 J

Next, we'll calculate the heat of fusion by multiplying the heat of fusion of water (334 J/g) by the mass of the water (8 kg).

Q = (334 J/g)(8 kg) = 2672 J

To sum up, the total heat required to transform 8 kg of liquid water at 33 °C to ice at 0 °C, is equal to the heat required to lower the temperature + heat of fusion which is 10,347 J + 2672 J = 13,019 J

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Answer:

extension = 0.9 m

Explanation:

The formula relating force to extension for a spring is given as follows:

\(\boxed{F = kx}\),

where:

• F = force applied on spring

• k = spring constant

• x = extension of spring

From the above formula:

\(\frac{F}{x} = k = \mathrm{constant}\)

This means that, for a spring, the ratio \(\frac{F}{k}\) is a constant value. Therefore, we can say:

\(\frac{F_1}{x_1} = \frac{F_2}{x_2}\)

Substituting 2.0N and 0.30m for F₁ and x₁ respectively, and 6N for F₂, in the above equation, we can solve for x₂:

\(\frac{2.0}{0.3} = \frac{6.0}{x_2}\)

⇒ \(x_2 \times \frac{2.0}{0.3} = 6.0\)          [Multiplying both sides of the equation by x₂]

⇒ \(x_2 = 6.0 \div \frac{2.0}{0.3}\)

⇒ \(x_2= \bf 0.9 m\)

Therefore, the extension of the spring when 6N force is applied is 0.9 m.

The extension of the spring when the force applied becomes 6 N is 0.9 m.

The force constant or spring constant of the spring is calculated as follows;

F = kx

k = F/x

where;

k = (2 N) / (0.3 m) = 6.67 N/m

The extension of the spring when the force applied on the spring becomes 6 N is calculated as follows;

x = F/k

x = (6 N) / (6.67 N/m)

x = 0.9 m

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The maximum kinetic energy of the electrons when barium is illuminated by light with a wavelength of 400 nm is approximately 0.622 × 10^(-15) eV.

To calculate the maximum kinetic energy of electrons when barium is illuminated by light of a certain wavelength, we can use the photoelectric effect equation:

E = hf - Φ

Where:

E is the maximum kinetic energy of electrons,

h is Planck's constant (approximately 4.136 × 10^(-15) eV·s),

f is the frequency of the light (related to wavelength by the equation f = c/λ, where c is the speed of light),

Φ is the work function of the metal (given as 2.48 eV).

To solve the problem, we first need to convert the given wavelength of 400 nm to frequency:

λ = 400 nm = 400 × 10^(-9) m

c = speed of light = 3 × 10^8 m/s

f = c/λ = (3 × 10^8 m/s) / (400 × 10^(-9) m) = 7.5 × 10^14 Hz

Now, we can substitute the values into the photoelectric effect equation:

E = hf - Φ

E = (4.136 × 10^(-15) eV·s) × (7.5 × 10^14 Hz) - 2.48 eV

Calculating this equation gives us:

E ≈ (3.102 × 10^(-15) eV) - 2.48 eV

Simplifying further:

E ≈ 0.622 × 10^(-15) eV

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A spiral spring is compressed by 0.5 cm. The energy stored in the spring can be calculated using the formula \(E=1/2*k*x^2\). Given that the force constant is 200 N/m, we can calculate the energy stored in the spring to be 0.00025 J.

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Answer:

between 0s and 0.5s

Explanation:

the objects position is moving away from the origin and the position-versus-time curve has a positive slope

Change in the momentum of the object with mass 4.9 kg on which force of 6.36 N acts for 20.4 s is 31.164kgm/s and change in velocity is 6.36m/s

As we know Force acting on any object is

F = m.a...........(1)

where m ⇒ mass

and a ⇒ acceleration

Also \(a=\frac{v}{t}\)..........(2)

where v ⇒ velocity

t ⇒ time

so equation (1) can be written as:

\(F=\frac{m.v}{t}\)..........(3)

Change in Momentum is equal to

p=m.v.......(4)

where m ⇒ mass

v ⇒ velocity

Now as per the question:

Force, F = 6.36 N

Mass, m = 4.9 kg

Time, t = 20.4s

putting the values in equation (3),

we get \(6.36=\frac{4.9*v}{20.4}\)

by solving this we get a value of v=6.36m/s

putting the values in equation (4)

we get, Change in momentum

\(p=4.9*6.36\\p=31.164kg m/s\)

so the change in velocity is 6.36m/s and change in momentum is 31.164kgm/s

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