Two points on a progressive wave are out of phase by 0.41 rad.
What is this phase difference?
[1 mark]
A 23° [e]
B 47° [e]
C 74° [e]
D 148° [e]

Answer:

39.04 J

Explanation:

Definition of work

[tex]W=fd[/tex]

[tex]W=[/tex] Work

[tex]f=[/tex] force

[tex]d=[/tex] displacement

In this case,

[tex]f=6.4[/tex]

[tex]d=6.1[/tex]

[tex]W=6.4*6.1[/tex]

[tex]W=39.04[/tex]

it take the ant   68.9 seconds to get across  the other edge of a long strip.

If the ant is moving at a constant speed, the velocity vector will have the same magnitude at any point, and can be decomposed in two vectors, along directions perpendicular each other.

So then, if we choose these directions coincident with the long edge of the paper, and the other perpendicular to it, the components of the velocity vector, along these axes, can be calculated as the projections of this vector along these axes.

We only are interested in the component of the velocity across the paper, that can be calculated as follows:

vₓ = v* sin θ, where v is the magnitude of the velocity, and θ the angle that forms v with the long edge.

We know that v= 0.6 cm/s, and θ = 40º, so we can find vₓ as follows:

vₓ = 0.6 cm/s x sin 40 º

Vx = 0.6 cm/s x 0.7451 =  0.447 cm/s

Applying the definition of average velocity, we can solve for t:

time =  30.8 cm/ 0.447

time = 68.9 seconds

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Answer:

let the first point be a second be b third be c fourth be d and last point be e.

The point a and d are incorrect. because tye plotting of the is incorrect

For the chain: linear density =ρ, length =l. The chain is placed on a smooth plane. The speed of the chain when the left end leaves the plane is the same as its initial speed, which is zero.

Generally, To determine the speed of the chain when the left end leaves the plane, we need to consider the forces acting on the chain and use Newton's second law to find the acceleration of the chain.

The forces acting on the chain are the force of gravity and the normal force from the plane. The force of gravity is downward and is equal to the weight of the chain, which is given by the equation:

Fg = mg

where m is the mass of the chain and g is the acceleration due to gravity. The normal force from the plane is upward and is equal to the force of gravity, since the chain is stationary at this moment.

Newton's second law states that the acceleration of an object is equal to the net force acting on it divided by its mass. Therefore, the acceleration of the chain is given by:

a = (Fg - Fn)/m = (mg - mg)/m = 0 m/s^2

Since the acceleration of the chain is zero, the speed of the chain does not change as it drops.

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CQ not found

The scenario that involves at least one chemical change happening is your summer job for the year is to pick strawberries. At the end of the day, you have to crush the ones turning rotten to make strawberry jam. The correct option is D.

When bonds between molecules or atoms are created, disrupted, or both, chemical changes result. This implies that a substance with a particular set of properties—such as melting point, color, flavor, etc.—becomes a substance with a different set of characteristics.

Three essential chemical components are used in the production of jam: Acids, sugar, and pectin.

Therefore, the correct option is D, Your summer job for the year is to pick strawberries. At the end of the day, you have to crush the ones turning rotten to make strawberry jam.

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one of released energy for each coulomb of charge that travels across electrodes with a one volt potential difference. V joule, J/C is the correct way to describe this relationship.

A tool that transfers electricity from just an instrument to something like a patient for therapy or surgery. Examples include a tiny metal plate or needle. In order to help recorders diagnose certain problems, electrodes can also transport electrical impulses from the heart, brain, muscles, skin, or other physiological regions.

An electrode is a conductor for electricity that establishes electrical contact with nonmetallic components of a circuit, like an electrolyte, a semiconductor, or a vacuum. This may also go by the names anode or cathode if it is a part of an electrochemical cell.

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Mgsin, As a result, at a state of dynamic equilibrium, the frictional force exerted on a mass sliding down an incline is proportional to the object's weight times the sine of the incline angle.

In contrast to velocity, which describes the speed and direction of such an object's movement, speed is the speed of moves along a path. Alternatively, velocity is a vector while speed is a scalar quantity.

A motion or activity has velocity when it moves quickly. Another term for speed is celerity, which is also a synonym. The measurement of an object's rate and direction of positional change is known as its velocity in physics.

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The psychologist who emphasizes the social learning perspective explain this behavior would say that Ibrahim has observed others who model aggressive behavior. Option B

According to social psychology, aggression refers to any conduct or action intended to hurt a person, an animal, or cause physical injury to property. Here are a few instances of aggressive behavior: physical harm. screaming, cursing, and foul language.

Aggression is an overt or covert social engagement that is frequently harmful and intended to cause harm to another person.

Aggressive behavior is forceful, reactive, and impulsive behavior that frequently leads to breaching social norms or the law.

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The ratio of k is equal towards the temperature constant for such reaction constants at a certain temperature, and the values of the rate constants for the forward or reverse reactions are concentrations at that temperature.

A forward response is a reversible reaction wherein products are created from reactants so it moves from left to right. A reversible reaction that moves from right to left is referred to as a backward reaction since reactants are created from products.

In some oxidation processes, the reaction's products might combine to form the reactants' original form. Reversible reactions are what they are referred to as. To illustrate them, use the formula: A + B C + D.

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The values of the rate constants for the forward or reverse reactions are concentrations at that temperature, and the ratio of k is equal towards the temperature constant for such reaction constants.

Why is a reaction reversible?

A chemical reaction that is reversible occurs when the reactants generate products, which then combine to return the reactants to their original state.

When the rate of the forward reaction and the rate of the reverse reaction are equal, equilibrium is reached. At equilibrium, the concentrations of all the reactants and products are fixed. The amount of reactant to product in a chemical reaction can be compared to derive the equilibrium constant, which is used to predict chemical behavior. The rate constants are fixed at some temperature.

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The momentum of the blobs after the collision of a 1 kg blob of putty moving at 10 m/s with another 1 kg stationary blob will be 5 m/s.

The term "completely inelastic collision" is used to describe every time two masses cling together after colliding. Any inelastic collision will result in the internal energy of the objects being transformed into kinetic energy. Because of this, even though the system's energy is conserved (no outside forces are at action), its internal energy is changing in an unknowable and unpredictable fashion. This implies that the concept of energy conservation in inelastic collisions is absolutely meaningless to us. However, the conserved quantity that we can monitor is momentum.

Initial momentum is expressed as p = m1v1 + m2v2,

where, I denotes vector quantities.

v2 = 0  (because the second blob is at rest).

As a result, p=m1v1, |p|=m1|v1|=1*10= 10 kg*m/s,

The total amount of momentum is conserved in a closed system. The end momentum is 10 kg*m/s and is therefore also directed in the same direction as the beginning momentum.

The combined mass is now M=m1+m2= 1+1 = 2 kg due to the fact that two blobs are now clumped together. As a result, p = mv= 10 =2v; from this, v= 10/2 = 5 m/s, headed in the same direction as the first blob's starting velocity.

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The remote PIC should be aware of the wind gust because of a)  the rapid change in direction and speed which causes turbulence.

The wind gust is a sudden short-term increase in wind speed. According to US weather observation practice, a gust is reported when the maximum wind speed reaches at least 16 knots and the difference between the maximum wind speed and the light wind speed reaches at least 9 knots. Wind forces can disrupt a building's load path or pierce the building's skin. Doors and windows can burst in really high winds. In other cases, nearby debris can be caught in the wind and flung into the building's envelope.

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The x is the number of hours. want to determine the probability (P) x >= 13 To convert it to a percentage, multiply it by 100, yielding 84.13%.

Probability is simply the likelihood of something occurring. When we are uncertain about the result of an event, we might discuss the probabilities of several outcomes—how likely they are. Statistics is the study of occurrences guided by probability. If x is N(14,1), it can be transformed to N(0,1) using z = (x - mean) / standard deviation and the probability can be calculated using a conventional normal probability table.

P(x > 13)

= P(z > (13 - 14)/1)

= P(z > -1)

= 1 minus P(z -1)

= 1 minus 0.1587

= 0.8413

To convert it to a percentage, multiply it by 100, yielding 84.13%.

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Higher temperatures or lower activation energies result in more sufficiently energetic collisions, which increases the fraction of such collisions, increases the value of k, and increases reaction rates.

The consequences are explained by the collision theory. These variables include temperature, catalysts, surface area, concentration, and reactant type. Each of these influences raises the number and energy of collisions, which increases reaction rate.

The hypothesis states that responding particles usually collide without reacting. For interactions to take place, reacting particles need to collide with enough energy, in the appropriate direction, and with enough mass.

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Answer:

Below

Explanation:

When the switch is closed the circuit is complete....the coil in the circuit will act as a solenoid magnet and draw the iron in thus raising the sign.

Answer:

B. Wechsler tests distinguishes between general and specific intelligence; Stanford-Binet tests did not.

Explanation:

One of the main differences between the Wechsler and Stanford-Binet tests is that the Wechsler tests distinguish between general and specific intelligence. This means that the Wechsler tests provide separate scores for different types of intelligence, such as verbal comprehension and perceptual reasoning, whereas the Stanford-Binet tests did not. Additionally, the Wechsler tests measure a wider range of abilities than the Stanford-Binet tests, including musical ability and memory. The Wechsler tests also do not use the concept of mental age, which was a key feature of the Stanford-Binet tests.

The water purification procedure, such as filtration, sedimentation, distillation, etc.

Analysis of the reduction in microbes that is enough to protect against the transmission of pathogens in water is debated below. Chlorination is the most widely used method for disinfecting water supplies in the United States.

The most efficient way to desalinize salt water is by using a method called distillation. This is where you boil the water and then assemble the condensation. The steam will provide fresh salt-less water for you to drink.

So we can conclude that Chlorination is the activity of adding chlorine to drinking water to kill parasites bacteria and viruses.

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Answer:

The equation for the velocity component in the x-direction is : vx(t) = v(0) Cosθ.

Explanation:

here v(0) is the initial velocity

Answer:

ω = (K / M)^1/2   fundamental frequency for Simple Harmonic Motion

ω = (49 kg-m / (sec^2 - m) * 7.2 kg)^1/2 =  2.61 /sec

F = -K A    Hooke's Law and spring constant

A = 7.2 kg * 9.80 m/s^2 / 49 n/m = 1.44 m       amplitude

V =  ω A = 2.61 / sec * 1.44 m = 3.6 m/s        maximum speed

Answer:

1000m

Explanation:

Pressure = p x g x h

0.1 x 10^6 = 10 x 10 x h

(0.1 x 10^6) / 100

h = 1000m

I hope my answer helps you.

In quantum mechanics, an eigenfunction is a function that satisfies a particular differential equation and is used to describe the behavior of a physical system. An eigenvalue is a scalar value that corresponds to an eigenfunction and represents the magnitude of a physical property of the system.

An example of an eigenfunction in quantum mechanics is the wavefunction, which is used to describe the probability distribution of a particle in a particular state. The wavefunction is an eigenfunction of the Schrödinger equation, which is a fundamental equation in quantum mechanics that describes the time evolution of a physical system.

An example of an eigenvalue in quantum mechanics is the energy of an atom in a particular state. The energy of an atom is an eigenvalue of the Hamiltonian operator, which is a mathematical operator that describes the energy of a physical system.

In general, eigenfunctions and eigenvalues play a central role in the analysis of quantum mechanical systems and are important tools for understanding the behavior of particles at the atomic and subatomic scales.

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All of the magnetic domains in an unmagnetized item, such as the original piece of metal in our experiment below, point in different directions.

When a metal gets magnetized, as when it is rubbed with a strong magnet, all like magnetic poles line up and point in the same direction. Atoms in ferromagnetic materials form formations known as domains. A domain is an internal region of a material in which groups of magnetic moments spontaneously align in the same direction. When the external field is withdrawn, the domain walls are pinned in their new orientation, and the aligned domains generate a magnetic field. This is what happens when a ferromagnetic material is "magnetized" and transformed into a permanent magnet.

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Answer: 3 (c)

Explanation: The only force acting on the object is the force of gravity, mg, which acts straight downward. Even though the object has horizontal velocity, there is no horizontal force after the object is done being thrown.

Answer: D. 34.03

Explanation:

To solve this problem, we can use the equation for the conservation of energy, which states that the change in internal energy of a closed system is equal to the heat added to the system. We can express this equation as follows:

Kinetic energy gained by the falling ball is equal to the change of potential energy is because mechanical energy remains conserved ,it only converts from one form to another form.

The mechanical energy stays rationed when just inner powers follow up on the body and no outside powers are in real life. It implies that motor and potential might continue to change all through the excursion. Be that as it may, their total is steady at each point.

The forces are moderate, i.e., they don't rely upon the way of the moving article and are just subject to the beginning and last position. For instance, the gravitational power is moderate in nature, though the opposition presented via air is non-moderate in nature as it relies upon the way.

From the diagram,we can see that object has potential energy =mgh because of height h.When it was dropped from height h potential energy starts decreasing and kinetic energy starts increasing because of velocity attained by the body.Since mechanical energy is conserved,therefore kinetic and potential energy is equal.

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the refrigeration capability, in tons, is 4.905 tons, the coefficient of performance, in kW, is 4.17 KW, and the compressor power, in kW, is 4.1336 KW.

Electrical Expense = HP *.746 * hours * Kw cost * motor efficiency. As an illustration, consider a 50 HP compressor that consumes $.06 per Kwh of electricity and has a 90% efficiency electric motor. $5,172.26 is the yearly cost for 50 HP multiplied by.746 over 2,080 hours.

In order to create energy which can be kept in a tank for later use, air compressors work by applying pressure to atmospheric air. Similar to an open balloon, when the compressed air is purposefully released, pressure builds up, transforming the potential energy into productive kinetic energy.

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The total voltage in the circuit is 8 V. Then, the current passing through the resistor R3 is 1.95 A. The power supply to this resistor by the batteries is 15.6 W.

According to Ohm's law, the voltage through a closed circuit is the product of the current passing through the circuit and resistance through it.

Hence, V = I R.

Given that the resistance through the resistor R3 = 4.10 Ω

The voltage across each batteries = 4 V

Total voltages =  4 + 4 = 8V

Current = voltage/ resistance

             = 8 V/ 4.10 Ω

             = 1.95 A.

Power through a circuit is the product of current and voltage through it.

P = I V

Power supplied to R3 = 1.95 A × 8 V = 15.6 W.

Therefore, the power supplied by the batteries to the resistor R3  is 15.6 W.

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According to the information given, the continent weighs 2.422 * 10²¹ kg.

Volume is the amount of space a thing occupies, whereas mass is the amount of stuff it contains.

What is the rock's mass?

The following formula is used to calculate the rock's mass:

Volume times Density = Mass

The rock has a density of 2830 kg/m³

Area of side * Depth of rock equals the volume of the rock.

The rock's volume is equal to 5.5 * 10⁶ m x 5.5 * 10⁶ m x 2.83 * 10⁴ m

The rock's volume is  8.56 * 10¹⁷ m³

Rock mass: 8.56 * 10¹⁷ m³ * 2830 kg/m³

The rock weighs 2.422 * 10²¹ kg

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The general driving forces behind most chemical interactions is the need for atoms to be electrically neutral and to complete their outer electron orbital area (shell).

When both the cases are fulfilled i.e. when the enthalpy change is negative and the entropy change is positive, the reaction is said to be spontaneous and thus enthalpy and entropy are the two thermodynamic driving forces of chemical reactions.

There are several factors that affects the driving force:

1. Release of heat (exothermic reactions are driven)

2. Free energy – the change in free energy should be negative

3. Entropy – An increase in entropy drives a reaction

4. Equilibrium Shift - Removal of products drives the reaction

The general driving forces behind most chemical interactions is the need for atoms to be electrically neutral and to complete their outer electron orbital area (shell).

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