what is the peak current through a 500-w room heater that operates on 120-v ac power?

Spectral shifts are caused by the movement of the spectrum to shorter wavelengths, while the Big Bang Theory is supported by spectra analyses because we can determine how spectra of electromagnetic radiation from stars changes depending on their relative position.

The Big Bang Theory is a widely accepted model in physics about the boring of the Universe, which it is believed occurred though a big explosion, while light spectra refers to the observation of the electromagnetic radiation emitted by stars.

Therefore, with this data, we can see that the Big Bang Theory obtains supportive evidence from the emission of electromagnetic spectra of stars.

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Answer:

M= mv= 10kg x 37 m/s= 370 Kg x m/s

Answer:

-scalar

Explanation:

-A scalar is any quantity that has a magnitude, but no direction

-quantities with no specified direction.

hope it helps:)

The power provided by the secondary coil can be calculated using the formula P2 = (N2/N1)^2 * P1, where P1 is the power provided by the primary coil, N1 is the number of turns in the primary coil, N2 is the number of turns in the secondary coil, and P2 is the power provided by the secondary coil.

Using this formula, we can determine that the power provided by the secondary coil is: In order to calculate the power provided by the secondary coil of a step-up transformer, we need to know the power provided by the primary coil, as well as the number of turns in both the primary and secondary coils. Once we have this information, we can use the formula P2 = (N2/N1)^2 * P1 to calculate the power provided by the secondary coil.For this problem, we know that the primary coil draws 100W of power. We don't know the number of turns in either the primary or secondary coils, but we can assume that the transformer is a step-up transformer, which means that the secondary coil has more turns than the primary coil. This is because a step-up transformer is designed to increase voltage and decrease current, which is only possible if the secondary coil has more turns than the primary coil.In order to use the formula, we need to know the ratio of turns between the primary and secondary coils. This ratio is given by N2/N1. We don't know this ratio, but we do know that it is greater than 1 because the transformer is a step-up transformer. Therefore, we can set N2/N1 = x, where x is some number greater than 1.Using this ratio, we can rewrite the formula as P2 = x^2 * P1. We know that P1 = 100W, so we can substitute this value into the formula to get:P2 = x^2 * 100WTo solve for P2, we need to know the value of x. We don't know this value, but we do know that x is greater than 1. Therefore, we can make an estimate of x and use that estimate to calculate P2. For example, if we assume that x is equal to 2, then we can calculate:P2 = 2^2 * 100W = 400W

The power provided by the secondary coil of a step-up transformer can be calculated using the formula P2 = (N2/N1)^2 * P1. In order to use this formula, we need to know the power provided by the primary coil, as well as the ratio of turns between the primary and secondary coils. For this problem, we were given the power provided by the primary coil but not the ratio of turns. We can assume that the transformer is a step-up transformer, which means that the secondary coil has more turns than the primary coil. Using this assumption, we can estimate the value of the ratio of turns and use that estimate to calculate the power provided by the secondary coil.

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Answer: Artificial Selection

Explanation: Artificial Selection is described as the identification of desirable traits in both plants and animals, then enhance them, so that those traits can be manifested in future generations.

This is the scope behind cross breeding of plants and animals and this have largely been used in agricultural sector to improve input (such as disease-resistant seeds) and other biotechnological settings.

Darwin's described artificial selection as the human form of natural selection.

Answer:

Metal appears cool on touching because heat flows from body( at higher temperature) to iron( at lower temperature)

The heat transfer mechanism that requires the movement of material is convection. Convection involves the transfer of heat through the bulk movement of a fluid (liquid or gas).

This movement can occur due to the density differences caused by temperature variations within the fluid.

In the process of convection, heat energy is transferred from one location to another as the heated fluid expands, becomes less dense, and rises. Conversely, cooler fluid descends as it becomes denser. This circulation creates a continuous flow, enabling the transfer of heat.

Convection is commonly observed in various scenarios, such as the heating of a room through a convection heater, the cooling of a computer through a fan, or the circulation of hot air currents in the atmosphere, resulting in wind patterns. It is an important mechanism for heat transfer in both natural and engineered systems.

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The time of fall of an object is not directly related to its weight (mg), but rather to the acceleration due to gravity (g) and the distance it falls.

In the case of coffee filters, assuming they have a similar shape and size, the weight (mg) will be proportional to the mass (m) of the filters.

Doubling the mass of the falling filters will not have a direct effect on the time of fall if we assume that air resistance is negligible. According to the equation for the time of fall, which is derived from the

kinematic equations:

Time = √((2 * distance) / g)

The mass of the falling object does not appear in this equation. Therefore, doubling the mass will not change the time of fall if other factors such as distance and acceleration due to gravity remain constant.

However, in real-world scenarios, where air resistance is present, the time of fall can be affected by the mass of the falling filters. Increased mass can lead to increased air resistance, which can slow down the filters and increase the time of fall. This effect becomes more significant as the mass and size of the falling object increase.

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According to the question the force applied by the person above is 1401.4 N.

Force is a physical quantity that is a measure of the interaction between objects. It is a vector, which means it has both magnitude and direction. Force is an influence that can cause an object to accelerate, decelerate, change direction, or remain in its current state. It is the result of an interaction between two objects that either attracts or repels them. Examples of forces include gravity, friction, electromagnetic force, and the force of a muscle. Force is a fundamental concept in physics and is necessary for understanding the behavior of matter and its interactions with energy.

The magnitude of the force applied by the person above can be calculated using the equation F = mgsinθ, where m is the mass of the crate (200 kg), g is the acceleration due to gravity (\(9.8 m/s^2\)), and θ is the angle of the stairs (45°).
Therefore, the force applied by the person above is
\((200 kg)(9.8 m/s^2)(sin45^\circ) = 1401.4 N.\)

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Complete Question:

The expression (sqrt(5) + 2)(4 - sqrt(5)) simplifies to 2sqrt(5) + 3.

To evaluate the expression using the FOIL method, we need to multiply the first terms, outer terms, inner terms, and last terms.

The expression is (sqrt(5) + 2)(4 - sqrt(5)).

First, multiply the first terms: sqrt(5) * 4 = 4sqrt(5).

Next, multiply the outer terms: sqrt(5) * -sqrt(5) = -5.

Then, multiply the inner terms: 2 * 4 = 8.

Lastly, multiply the last terms: 2 * -sqrt(5) = -2sqrt(5).

Now, combine the like terms: 4sqrt(5) - 5 + 8 - 2sqrt(5).

Simplify the expression: 4sqrt(5) - 2sqrt(5) - 5 + 8.

Combine the like terms again: (4 - 2)sqrt(5) + 3.

Finally, simplify further: 2sqrt(5) + 3.

Therefore, the expression (sqrt(5) + 2)(4 - sqrt(5)) simplifies to 2sqrt(5) + 3.

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The best describes the image of a concave mirror when the object is at a distance greater than twice the focal point distance from the mirror is (c) virtual, upright, and magnification less than one.

When the object is placed beyond twice the focal length of a concave mirror, the image formed is virtual, meaning it cannot be projected onto a screen. The image is also upright, having the same orientation as the object.

In addition, the magnification of the image is less than one, indicating that the image is smaller in size compared to the object. This is because the concave mirror forms a reduced and virtual image when the object is located beyond the focal point.

The distance between the object and the mirror affects the size and position of the virtual image formed.

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fjfjfj

Explanation:

rufifiriirifieif

Answer:it’s all of the above for the ck-12

Explanation:

The resulting equation of motion for the system is given by m × x''(t) + k × x(t) = f(t), which is 2 × x''(t) + 18 * x(t) = 2 * sin(2t).

What is  equation of motion?

The equations of motion are a set of mathematical relationships that describe the motion of objects under the influence of forces. There are different sets of equations of motion, depending on the specific scenario and the type of motion being considered (linear motion, projectile motion, circular motion, etc.). The equations of motion for linear motion, also known as the equations of uniformly accelerated motion.

To find the equation of motion for the system, we start with Newton's second law of motion, which states that the sum of forces acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the 2-kg mass attached to the spring.

The force exerted by the spring is proportional to the displacement of the mass from its equilibrium position, and it can be expressed as F_spring = -k× x(t), where k is the spring constant and x(t) is the displacement of the mass at time t.

In addition to the force exerted by the spring, there is an external force f(t) = 2 ×sin(2t) acting on the mass.

Applying Newton's second law, we have the equation of motion: m ×x''(t) + k ×x(t) = f(t).

Substituting the given values, m = 2 kg and k = 18 N/m, we obtain 2 ×x''(t) + 18 × x(t) = 2 ×sin(2t).

Therefore, the resulting equation of motion for the system is 2 × x''(t) + 18 × x(t) = 2 × sin(2t).

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Answer:

5238747643782 mph

Explanation:

i assure u it is

Answer:

16.67 kg

Explanation:

Acceleration = 3 m/s^2

Force = 50 N

Force = mass * acceleration

mass = force / acceleration

mass = 50 / 3

mass = 16.67 kg

the electric flux through the annulus is 34.3 V m.

Given that the inner radius of the annulus, a = 1.6 m, the outer radius of the annulus, b = 3.8 m, the magnitude of the electric field, E = 9.9 m V, and the angle between the horizontal and electric field, θ = 65.9°.

The formula to calculate the electric flux is given by,Φ = E.A cosθWhere E is the magnitude of the electric field, A is the area of the surface, and θ is the angle between the electric field and the normal to the surface.

The area of the annulus is given by,A = π(b² - a²)Substituting the given values in the above equation, we get,A = π(3.8² - 1.6²)A = 12.2 π m²Now substituting the values of E, A, and θ in the electric flux formula, we get,Φ = E.A cosθΦ = 9.9 × 12.2π × cos 65.9°Φ = 34.3 V mHence,

the electric flux through the annulus is 34.3 V m.

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The change of velocity is from 18.5 to 46.1 m/s or 46.1 - 18.5 = 27.6 m/s. The time of change is 2.47 s. So the acceleration is 27.6 m/s / 2.47 s = 11.17 m/s^2. The distance traveled is average velocity times time of travel.

The phenomenon you are describing is known as the generation of eddy currents. When a metallic surface is exposed to a changing magnetic field, such as when a magnet is moved near it, eddy currents are induced in the metal. These currents circulate within the metal and generate their own magnetic field.

The direction of the eddy currents' magnetic field is such that it opposes the original magnetic field. This is due to Lenz's law, which states that the induced current will always flow in a direction that creates a magnetic field that opposes the change in the original magnetic field.
To understand this concept better, consider an example: Imagine a metal plate placed in the vicinity of a magnet. When the magnet is moved towards the plate, the magnetic field lines passing through the plate change. As a result, eddy currents are induced in the plate, flowing in circular paths. These currents, in turn, generate a magnetic field that opposes the change in the original magnetic field. This opposition slows down the motion of the magnet, demonstrating the action of the eddy currents.
In summary, eddy currents are induced from a metallic surface when it is exposed to a changing magnetic field. These currents generate a magnetic field that opposes the original magnetic field, according to Lenz's law. Understanding this phenomenon helps explain the behavior of eddy currents in various applications.

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Explanation:

Acc=change in velocity/time

a=30-0 / 6

a =30/6

a = 5m/s^2

a. The angular speed of the rotating nylon line is 314.16 radians per minute.

b. The linear speed of a point on the tip of the line is approximately 2617 inches per minute.

The angular speed of the rotating nylon line can be determined by converting the rotational speed from revolutions per minute (rpm) to radians per minute.

Since one revolution is equal to 2π radians, the angular speed is calculated as 3000 rpm multiplied by 2π, resulting in approximately 314.16 radians per minute.

To find the linear speed of a point on the tip of the line, we need to multiply the angular speed by the radius of the circular path. Given that the line is 5 inches long, the radius is half of that, or 2.5 inches.

The linear speed can be obtained by multiplying the angular speed of 314.16 radians per minute by the radius of 2.5 inches, resulting in approximately 785.4 inches per minute.

Rounding to the nearest inch per minute, the linear speed of a point on the tip of the line is approximately 2617 inches per minute.

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Answer:

I think the answer is C.

Explanation:

the verticale distance of a wave from its crest to its trough

The frequency of the cord when only 0.38 kg hangs from it is 6.18 Hz.

As per the given information, an elastic cord vibrates with a frequency of 3.0 Hz when a mass of 0.60 kg is hung from it. We have to calculate the frequency of the cord when only 0.38 kg hangs from it. Let's solve the problem step by step:Formula: f = 1/(2π)√(k/m)Given, mass when frequency is 3.0 Hz is 0.60 kg.

We can substitute these values in the formula to find the value of k.f1 = 3.0 Hzm1 = 0.60 kgSubstitute these values in the formula and solve for k.f1 = 1/(2π)√(k/m1)3.0 = 1/(2π)√(k/0.60)3.0 = (1/2π) * √(k/0.60)(3.0 * 2π) = √(k/0.60)k = (3.0 * 2π)^2 * 0.60k = 22.68π^2 N/m

Now we can calculate the frequency of the cord when only 0.38 kg hangs from it. We can substitute the given values and the value of k in the formula to find the frequency of the cord.f2 = 1/(2π)√(k/m2)f2 = 1/(2π)√(22.68π^2/0.38)f2 = 6.18 Hz

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Answer:

A. How much matter an object has, plus the magnitude and direction  of its motion

Explanation:

Momentum is defined as the product of mass by velocity, in the international system of measurements (SI) momentum has the following Units [kg*m/s].

P = m*v

where:

P = momentum Lineal [kg*m/s]

m = mass [kg]

v = velocity [m/s]

Therefore the answer is A) How much matter an object has, plus the magnitude and direction  of its motion

Answer:

A is correct

Explanation:

A P E X

Answer:

Explanation:

The amount of space between rock and soil that can hold water is known as porosity. Porosity is a measure of the void spaces in a material, typically expressed as a percentage of the total volume of the material. In other words, it's the ratio of the volume of pore space in a rock or soil to the total volume of the rock or soil.

The porosity of rock and soil can vary widely, depending on the type of rock or soil and the conditions under which it formed. For example, some types of rock, such as sandstone, have high porosity (around 30-40%) because they are composed mostly of grains of sand that are held together by a small amount of cement. Other types of rock, such as granite, have very low porosity (around 1-2%) because they are composed mostly of tightly packed mineral crystals.

Soil, on the other hand, can have a wide range of porosity depending on the soil type. Sandy soils tend to have higher porosity than clay soils, but even within a soil type, porosity can vary greatly depending on the soil structure, organic matter content, and other factors.

In general, the porosity of rock and soil can range from less than 1% to over 40%. In order to hold water, the porosity should be greater than zero.

Answer:

which language is these

Explanation:

we only use english , Hindi ,tamil , bengali and Malayalam

please tell us that it is which language. From that we will slove this

Answer:

a = vf-vi / t

a = (54 km / h-36 km / h) / 2

a = 18/2

a = 9ms⁻²

Answer: 0.8

Explanation:

The efficiency is defined as the ratio of total imput energy that is actually utilized to the end of the device.

So if we have a total transfer of 1500j of energy, and 1200j are used to heat the thing inside the kettle, 300j are not used to the actual function of the kettle.

So the efficiency is n = 1200j/1500j = 0.8

This means that a 80% of the energy imput is actually used to heat the kettle.

Answer:

7.45 Ω

Explanation:

From the question given above, the following data were obtained:

Resistor 1 (R₁) = 2.50 Ω

Resistor 2 (R₂) = 4.95 Ω

Voltage (V) = 12 V

Equivalent Resistance (Rₑq) =?

Since the resistors are in series arrangement, the equivalent resistance can be obtained as follow:

Rₑq = R₁ + R₂

Rₑq = 2.5 + 4.95

Rₑq = 7.45 Ω

Therefore, the equivalent resistance is 7.45 Ω

Answer:

p = 18 kg-m/s

Explanation:

Given that,

The mass of tyre, m = 6 kg

The velocity of the tyre, v = 3 m/s

We need to find the momentum of the tyre. We know that, the momentum of an object is equal to the product of mass and velocity. SO,

p = mv

\(p=6\ kg\times 3\ m/s\\\\=18\ kg-m/s\)

So, the momentum of the tyre is equal to 18 kg-m/s.

The name given to it is "terminal velocity".

In reality, it isn't a velocity, and it doesn't happen in free-fall.

Go figure.