what is alpha decay in physics

Answer:

Social media has helped many businesses grow and promote itself, and has helped people find a better way to connect and communicate with one another. On the other hand, it's also provided many people with problems involving mental health, emotional insecurities, and waste of time

Explanation:

what they said is correct

Answer:

High current flow

Explanation:

Generally , the measuring instruments used by technician also have some resistance, though its value is very low  . So when high current is present in the circuit , that current also passes through the instrument which creates a good potential drop across the instrument . So the external voltage used in the circuit measures less voltage .

Answer:

v = 4 m/s

Explanation:

Given :

Ball X :

Mass, m1 = 8kg ;

Initial Velocity, u1 = 2 m/s

Final velocity, v1 = 0

Ball Y:

Mass, m2 = 4kg ;

Initial Velocity, u2 = 0 m/s

Final velocity, v2 = v

(m1u1 + m2u2) = (m2v2 + m1v1)

(8*2 + 4*0) = (4*v + 4*0)

16 + 0 = 4v + 0

16 = 4v

v = 16 / 4

v = 4 m/s

Answer:

Explanation:

This is the Law of Momentum Conservation which for us looks like this:

\([m_xv_x+m_yv_y]_b=[m_xv_x+m_yv_y]_a\) and that should look familiar to you if this is what you are doing in physics. Filling in our particular info:

[(8.0 × 2.0)+ (4.0 × 0.0)] = [(8.0 × 0.0) + (4.0v)] and

16 + 0 = 0 + 4.0v and

16 = 4.0v so

v = 4.0 in the direction of ball X

(a) The kinetic energy of the cart when it moves is 2/3 the way down is 1/3mgh.

(b) The total mechanical energy of the cart at the given height of 5 m is 5mg.

The potential energy of the cart when it is 2/3 way down the given height of 5 m is calculated as follows;

ΔP.E = mghf - mgh₀

ΔP.E = mg(hf - h₀)

ΔP.E = mg(2h/3 - h)

ΔP.E = -¹/₃mgh

ΔK.E = -ΔP.E

ΔK.E = ¹/₃mgh

M.A = P.E + K.E

M.A = ²/₃mgh + ¹/₃mgh

M.A = mgh

M.A = mg(5)

M.A = 5mg

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The local drift speed of electrons at that point in the copper conductor is approximately -3.3 x 10^-5 m/s. The negative sign in the answer indicates that the electrons are moving in the opposite direction to the conventional current flow.

The relationship between current density (J), charge carrier density (n), charge of each carrier (q), and the local drift velocity (vd) of the charge carriers is given by:

J = n x q x vd

where:

J = current density (A/m²)

n = charge carrier density (1/m³)

q = charge of each carrier (C)

vd = local drift velocity (m/s)

In the case of copper, the charge carriers are electrons and the charge of each electron is q = -1.602 x 10⁻¹⁹ C. The charge carrier density in copper is typically on the order of 8.5 x 10²⁸ electrons/m³.

Plugging in the given values, we have:

480 A/m² = (8.5 x 10²⁸ electrons/m^3) ₓ (-1.602 x 10⁻¹⁹ C/electron) ₓ vd

Simplifying this equation, we get:

vd = 480 A/m² / ((8.5 x 10^28 electrons/m³) ₓ (-1.602 x 10⁻¹⁹ C/electron))

vd = -3.3 x 10⁻⁵ m/s

Note that the negative sign in the answer indicates that the electrons are moving in the opposite direction to the conventional current flow. Therefore, the local drift speed of electrons at that point in the copper conductor is approximately -3.3 x 10⁻⁵ m/s.

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Answer:

C. Elements with intermediate number of valence electrons are the most chemically stable.

Answer:

Watch something educational

Explanation:

Like Anime

There are several things you can do to end your boredom time like you can watch movies, you can read books, or can go trekking or something.

According to conventional definitions, boredom is a sentimental and sporadically psychological state that occurs when someone is left without something specific to do when they feel listless and dissatisfied due to a lack of activity or excitement, when they are uninterested in one’s surroundings, or when they think a day or period is tedious.

Scholars also view it as a contemporary phenomenon with a cultural component. There is no agreed-upon definition of boredom.

There are several ways to tackle with boredom:

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Answer:

D. Sound waves

Explanation:

The following options are missing:

A. radio wave

B. X-rays

C. Light waves

D. Sound waves

There are two kinds of waves: longitudinal and transverse.

In longitudinal waves, the vibrations are parallel to the direction of wave travel. Examples of longitudinal waves include: sound waves  and ultrasound waves.

In transverse waves, the vibrations are at right angles to the direction of wave travel. All electromagnetic waves (e.g. light waves, microwaves, radio waves and X-rays) are transverse waves.

Answer: A.0,0097s

Mas a unidade aí deveria ser Hertz (Hz)

Explanation:

Answer:

103 hz

Explanation:

When the area of each plate is doubled while keeping the charge and separation constant, the electric field decreases, the potential difference remains the same, and the stored energy in the capacitor increases four times.

When the area of each plate of a capacitor is doubled while keeping the total charge on each plate and the separation between the plates constant, the following changes occur:

1. Electric Field: The electric field between the plates decreases. The electric field (E) between the plates of a capacitor is inversely proportional to the area (A) of the plates. As the area is doubled, the electric field is halved, assuming the other factors remain constant.

2. Potential Difference: The potential difference (V) across the plates remains the same. The potential difference across the plates of a capacitor depends on the charge (Q) and the capacitance (C), which is determined by the geometric and material properties of the capacitor. Since the total charge and separation between the plates are held constant, the potential difference remains unchanged.

3. Stored Energy: The stored energy in the capacitor increases four times. The energy stored in a capacitor (U) is directly proportional to the area of the plates (A). When the area is doubled, the stored energy is quadrupled (increases by a factor of four).

Therefore, when the area of each plate is doubled while keeping the charge and separation constant, the electric field decreases, the potential difference remains the same, and the stored energy in the capacitor increases four times.

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Increase in speed leads to increase in kinetic energy

Answer:

M.E = 0.241 Joules.

Explanation:

Given the following data;

Spring constant, k = 33.5 N/m

Extension, e = 0.12m

Mass = 1.20kg

To find the mechanical energy (M.E);

Mathematically, mechanical energy is given by this formula;

M.E = ½ke²

Where;

Substituting into the equation, we have;

M.E = ½*33.5*0.12²

M.E = ½*33.5*0.0144

M.E = 0.4824/2

M.E = 0.241 Joules.

Process costing and job-order costing are two instances of costing systems.

April 1 DR Raw Material - Fabric 338,400

DR Raw Material - Polyester filling 470,400

DR Raw Material - Lumber 902,400

DR Raw Material - Glue 32,400

CR Accounts Payable 1,743,600

April 3 DR Work in Process 1,726,400

CR Raw Material - Fabric 315,800

CR Raw Material - Polyester filling 424,400

CR Raw Material - Lumber 986,200

April 3 DR Manufacturing Overhead 34,800

CR Raw Material - Glue 34,800

April 30 Balances in Raw Materials Accounts:

Fabric: 67,500 + 338,400 - 315,800 = $90,100

Polyester filling: 20,200 + 470,400 - 424,400 = $66,200

Lumber: 150,000 + 902,400 - 986,200 = $66,200

Glue: 6,550 + 32,400 - 34,800 = $4,150

The complete question is,

Eclectic Ergonomics Company manufactures designer furniture. Eclectic Ergonomics uses a job order cost system Balances on April 1 from the materials ledger are as follows:

Fabric $67,500

Polyester filling 20, 200

Lumber 150,000

Glue 6,550

The materials purchased during April are summarized from the receiving reports as follows:

Fabric $338,400

Polyester filling 470,400

Lumber 902,400

Glue 32,400

Materials were requisitioned to individual jobs as follows:

Fabric Polyester Filling Lumber Glue Total

Job 81 $127,400 $160,800 $401,200  $689,400

Job 82 97,200 145,200 375,000  617,400

Job 83 91,200 118,400 210,000  419,600

Factory overhead-indirect materials    $34,800 34,800

Total $315,800 $424,400 $986,200 $34,800 $1,761,200

The glue is not a significant cost, so it is treated as indirect materials (factory overhead).

Required:

a. Journalize the April 1 entry to record the purchase of materials in April.*

b. Journalize the April 3 entry to record the requisition of materials in April.*

c. Determine the April 30 balances that would be shown in the materials ledger accounts.

∗Refer to the Chart of Accounts for exact wording of account titles.

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Two examples of costing systems are workflow costing and job-order costing.

Companies will choose a costing system based on the nature of the manufactured goods. Two examples of costing systems are process accounting and job-order costing.

Job-order costing is used because the products being made are bespoke and have unique manufacturing needs. Process costing is used when the consumer products are homogeneous and have equal manufacturing requirements.

Actual direct costs on both labor and materials will often be used because these prices could be related to a particular product. However, since the availability of actual overhead expenses won't be until the conclusion of the term, applied.

Briefing:

April 1 DR Raw Material - Fabric 338,400

DR Raw Material - Polyester filling 470,400

DR Raw Material - Lumber 902,400

DR Raw Material - Glue 32,400

CR Accounts Payable 1,743,600

April 3 DR Work in Process 1,726,400

CR Raw Material - Fabric 315,800

CR Raw Material - Polyester filling 424,400

CR Raw Material - Lumber 986,200

April 3 DR Manufacturing Overhead 34,800

CR Raw Material - Glue 34,800

April 30 Balances in Raw Materials Accounts:

Fabric: 67,500 + 338,400 - 315,800 = $90,100

Polyester filling: 20,200 + 470,400 - 424,400 = $66,200

Lumber: 150,000 + 902,400 - 986,200 = $66,200

Glue: 6,550 + 32,400 - 34,800 = $4,150

The complete question is,

Eclectic Ergonomics Company manufactures designer furniture. Eclectic Ergonomics uses a job order cost system Balances on April 1 from the materials ledger are as follows:

Fabric $67,500

Polyester filling 20, 200

Lumber 150,000

Glue 6,550

The materials purchased during April are summarized from the receiving reports as follows:

Fabric $338,400

Polyester filling 470,400

Lumber 902,400

Glue 32,400

Materials were requisitioned to individual jobs as follows:

Fabric Polyester Filling Lumber Glue Total

Job 81 $127,400 $160,800 $401,200  $689,400

Job 82 97,200 145,200 375,000  617,400

Job 83 91,200 118,400 210,000  419,600

Factory overhead-indirect materials    $34,800 34,800

Total $315,800 $424,400 $986,200 $34,800 $1,761,200

The glue is not a significant cost, so it is treated as indirect materials (factory overhead).

Required:

a. Journalize the April 1 entry to record the purchase of materials in April.*

b. Journalize the April 3 entry to record the requisition of materials in April.*

c. Determine the April 30 balances that would be shown in the materials ledger accounts.

∗Refer to the Chart of Accounts for exact wording of account titles.

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Answer:

Electric field lines are an excellent way of visualizing electric field. Electrical lines of force can be described as a way or path, it can be straight or curved so that the tangent gives the direction of the intensity of the electric field at that point at any point.

Surface 1 is blacktop, Surface 2 is gravel, and Surface 3 is ice. is most likely describe the three surfaces.

Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces, such as the traction needed to walk without slipping, may be beneficial, but they also present a great measure of opposition to motion. About 20 percent of the engine power of automobiles is consumed in overcoming frictional forces in the moving parts.

The major cause of friction between metals appears to be the forces of attraction, known as adhesion, between the contact regions of the surfaces, which are always microscopically irregular. Friction arises from shearing these “welded” junctions and from the action of the irregularities of the harder surface plowing across the softer surface.

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Answer: The answer is B: Convection  

Explanation: Convection transfers heat through a movement of fluids but in this case its through air hope this helps :)

Answer:

cyber physical verbal

Explanation:

these are types of bullying

Answer:

Physical, Social, Verbal, and Cyber are different kinds of bullying.

Explanation:

Physical Bullying- Physical bullying is the use of physical actions to intimidate and gain control over a target. The physical actions are unwanted by the victim and can either cause damage to their body or possessions. This behavior is all too common in schools.

Social Bullying- Social bullying is deliberate, repetitive, and aggressive social behavior intended to hurt others. This type of behavior generally includes gossip or other actions that cause mental and emotional harm and social isolation for the victim.

Verbal Bullying- Verbal bullying is intended to degrade, demean, or insult the target person, which might affect their mental, physical, emotional, and psychological health. A bully might make comments about the appearance, gender, race, and weight of the bullied.

Cyber Bullying- Cyberbullying is bullying with the use of digital technologies. It can take place on social media, messaging platforms, gaming platforms, and mobile phones. It is repeated behavior, aimed at scaring, angering, or shaming those who are targeted.

The answer is option (b) irreflexive, i.e., "is not married to." Therefore, we can conclude that the irreflexive is "is not married to".

Here are two relations: "is married to" and "is not married to." Supposing the universe is the set of all living human beings, which of these is irreflexive.

The irreflexive is "is not married to".What is irreflexive. In Mathematics, a binary relation R over a set X is irreflexive if and only if no element of X is associated with itself under the relation. Symbolically, ∀x ∈ X, ¬(xRx).

For example, the "greater than" relation is irreflexive on the real numbers because no real number is ever greater than itself.

What is a binary relation A binary relation R from a set A to a set B is a subset of the Cartesian product A × B, where A and B are arbitrary sets.In this case, the universe is the set of all living human beings.

Therefore, the relation "is married to" is not irreflexive. However, the relation "is not married to" is irreflexive since no human being is not married to themselves.

Thus, the answer is option (b) irreflexive, i.e., "is not married to."Therefore, we can conclude that the irreflexive is "is not married to".

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The relation "is married to" is reflexive, while the relation "is not married to" is irreflexive. Neither relation is symmetric, asymmetric, or antisymmetric.

The relation "is married to" is an example of a reflexive relation, while the relation "is not married to" is an example of an irreflexive relation.

(a) Reflexive: A relation is reflexive if every element in the set is related to itself. In the case of the relation "is married to," every person in the universe of all living human beings is married to themselves. For example, John is married to John, Mary is married to Mary, and so on. This satisfies the condition of reflexivity.

(b) Irreflexive: A relation is irreflexive if no element in the set is related to itself. In the case of the relation "is not married to," no person in the universe of all living human beings is not married to themselves. This means that everyone is married to themselves, which contradicts the condition of irreflexivity.

The relations "is married to" and "is not married to" are not symmetric, asymmetric, or antisymmetric because they do not satisfy the respective conditions for these properties.

(c) Symmetric: A relation is symmetric if for every element (x, y) in the relation, the element (y, x) is also in the relation. In the case of the relation "is married to," if John is married to Mary, it does not necessarily mean that Mary is married to John. Therefore, the relation is not symmetric.

(d) Asymmetric: A relation is asymmetric if for every element (x, y) in the relation, the element (y, x) is not in the relation. In the case of the relation "is married to," if John is married to Mary, it is not possible for Mary to be married to John. Therefore, the relation is not asymmetric.

(e) Antisymmetric: A relation is antisymmetric if for every element (x, y) in the relation, where x is not equal to y, if (x, y) is in the relation, then (y, x) is not in the relation. In the case of the relation "is married to," if John is married to Mary, it is not possible for Mary to be married to John. Therefore, the relation is antisymmetric.

In summary, the relation "is married to" is reflexive, while the relation "is not married to" is irreflexive. Neither relation is symmetric, asymmetric, or antisymmetric.

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Answer:

4.) added to the atmosphere by photosynthesis and removed by cellular respiration and combustion.

Explanation:

The net force on a vehicle that is accelerating at a rate of 1.8 m/s2 is 2100 N. The approximate mass of the vehicle in kg is 1166.67kg.

The word "force" has a clear definition. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects in the concept of a force.

The vector sum of the forces exerted on a particle or object is known as the net force. The original forces' impact on the motion of the particle is replaced by the net force, which is a single force.

Force ( F ) is 2100N

Acceleration ( a ) is 1.8m/s²

Mass(m)= ?

According to formula;

Force = mass × acceleration

F= m × a

2100 = m × 1.8

2100 / 1.8 = m

Therefore, m = 1166.6kg.

Thus, The net force on a vehicle that is accelerating at a rate of 1.8 m/s2 is 2100 N. The approximate mass of the vehicle in kg is  1166.67kg.

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Answer:

all I know is C

are there more questions? anyone?

-KARL IS STOOPID

Explanation:

Answer:

A balance and a beaker of water!

Explanation:

Krishne wants to measure the mass and volume of a key. The tools that are to be used are – a balance and a beaker of water.

Mass will be represent with the amount of matter that is in an object. This will be measured in terms of kilogram. The mass can easily be measured with balance.

Volume is the quantity of matter that is in the object. This is measured in terms of cubic meter. If you drop the key in a beaker of water, the water inside the beaker will increase and this increases the volume of water that will be equal to volume of key.

To find the electric potential energy of a 4.0-μC charge at a point with an electric potential of 20 V, you can use the following formula:

Electric Potential Energy (EPE) = Charge (Q) × Electric Potential (V)

In this case, Q = 4.0 μC and V = 20 V.

Remember to convert the charge to coulombs by multiplying by \(10^-6\):

Q = 4.0 ×\(10^-6\)

Now, plug in the values:

EPE = (4.0 × 1\(10^-6\) C) × (20 V)

EPE = 8 ×\(10^-5\) J (joules)

So, the electric potential energy of the 4.0-μC charge at that point is 8 × \(10^-5\) joules.

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Answer:

Explanation:

c

The approximate angular separation between the first-order maximum of 640 nm red light and the first-order maximum of 600 nm orange light is around 46.26 degrees.

To find the angular separation between the first-order maximum for 640 nm red light and the first-order maximum for 600 nm orange light, we can use the formula for angular separation in a double-slit diffraction pattern:

θ = (λ / d) * sin(Δθ),

where θ is the angular separation, λ is the wavelength of light, d is the slit separation, and Δθ is the order of the maximum.

Let's calculate the angular separation for the first-order maximum:

For red light of wavelength 640 nm (0.640 μm), and orange light of wavelength 600 nm (0.600 μm), we have:

θ_red = (0.640 μm / d) * sin(Δθ),

θ_orange = (0.600 μm / d) * sin(Δθ).

Dividing the equations:

θ_red / θ_orange = (0.640 μm / d) * sin(Δθ) / (0.600 μm / d) * sin(Δθ).

The slit separation (d) is common in both equations and cancels out:

θ_red / θ_orange = (0.640 μm / 0.600 μm).

Simplifying:

θ_red / θ_orange = 1.067.

To find the angular separation, we take the inverse tangent (arctan) of this ratio:

θ = arctan(θ_red / θ_orange) ≈ arctan(1.067).

Using a calculator, the approximate value is:

θ ≈ 46.26 degrees.

Therefore, the angular separation between the first-order maximum for 640 nm red light and the first-order maximum for 600 nm orange light is approximately 46.26 degrees.

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A bullet and a base ball

Objects with a small mass can produce a large acceleration if they experience a large force. This is described by Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass.

It's important to note that while these objects can produce a large acceleration, they can also cause significant damage or harm if not handled properly. It's important to always take appropriate safety precautions when working with objects that have the potential to produce large forces and accelerations.

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The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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