what are the three elements that can be used to make a magnet?

Magma is a combination of three things: the liquid portion called melt, the solid portion which consists of fragments of formed igneous rock, and the gaseous portion called volatiles. Magma is also classified as either mafic or felsic. Mafic magma has low viscosity, high temperature, and low gas content.

The terms that should be included in the answer are "melt," "solid portion," and "volatiles."Magma is a molten rock material that is found beneath the Earth's surface. On the other hand, felsic magma has high viscosity, low temperature, and high gas content. Magma is responsible for the creation of igneous rocks through the process of crystallization. When magma cools and solidifies, it forms solid rocks called igneous rocks. The type of igneous rock that forms depends on the type of magma and the rate of cooling.

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Igneous rocks consist of three main components: melt (liquid portion), solid fragments of formed igneous rock, and volatiles (gaseous portion).

Igneous rocks are formed from the solidification of molten rock material, known as magma. Magma is composed of three main components: melt, solid fragments, and volatiles.

The melt refers to the liquid portion of the magma. It consists of molten minerals and elements that are in a liquid state due to the high temperatures beneath the Earth's surface.

The solid portion of igneous rocks consists of fragments of previously formed igneous rocks. These fragments are often referred to as phenocrysts or xenoliths. Phenocrysts are larger crystals that grow within the magma before it solidifies, while xenoliths are foreign rock fragments that get incorporated into the magma as it rises towards the surface.

Volatiles are the gaseous components found within magma. They include gases such as water vapor (\(H_{2} O\)), carbon dioxide (\(CO_{2}\)), sulfur dioxide (\(SO_{2}\)), and various other gases. Volatiles are released from the magma during volcanic eruptions and contribute to the explosive nature of some volcanic activities.

Hence, these components play a significant role in the formation and characteristics of igneous rocks.

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Answer:

12.m

Explanation:

Answer The force is multiplied times 9

Explanation:

1 ft²= 0.09290304m²

so:

43560ft²= 0.09290304m²×43560

= 4,046.8564224 m²

Answer: 4046.9m² (approx.)

Explanation:

An acre is 43560 ft², but the US has two feet, the International foot, and the (old) Survey foot. Since 1983, the answer varies by state according to which foot the State has adopted for surveying. (Previously, it was always the Survey foot).

International: 43560 ft² x (0.3048 m/ft)² = 4046.856 422 m²

Survey: 43560 ft² x (1200/3937 m)² = 4046.872 610 m²

Both round to 4046.9 m² if that’s good enough, but there is a tiny difference.

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Answer:

D. Blackbody radiation

Explanation:

Such absorbs all colors of light due to the spectrum determined by temperature only.

The inductive reactance, XL, is modeled as XL= wL, For a purely inductive circuit, Z= XLpl q3. and fixed inductance l, in a circuit with a very large driving generator frequency, XL is large.

Given an inductor of fixed inductance L in a circuit with a very large driving generator frequency, the inductive reactance, XL, can be determined using the formula XL = ωL, where ω is the angular frequency.

Since the angular frequency ω is very large, when you multiply it by the fixed inductance L, the inductive reactance XL will also be large. Therefore, in a circuit with a very large driving generator frequency and a fixed inductance, XL is large.

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Answer:

(a) 165.46 V

(b) 7.78 A

Explanation:

(a) From the question,

Vrms = V₀/√2...................... Equation 1

Where V₀ = maximum potential difference across a lamp connected to the outlet.

make V₀ the subject of the equation.

V₀ = √2(Vrms)............... Equation 2

Given: Vrms = 117 V.

Substitute into equation 2

V₀ = (√2)(117)

V₀ = 165.46 V.

(b) Similarly,

I₀ = √2(Irms)....................... Equation 3

Given: Irms = 5.5 A

Substitute into equation 3

I₀ = (√2)(5.5)

I₀ = 7.78 A.

If you change the magnetic field inside a closed loop of wire, you induce in the loop is current .

As per the Faraday law, the current help to induce the electric field in a close loop.

Electric field- it is defined as the electric force per unit charge. The direction of the field is taken to be in the direction of the force which applied on a positive test charge.

If you change the magnetic field inside a closed loop of wire, you induce in the loop is current .

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The charge on the second sphere is -9.6×10⁻⁶ C.

The force of attraction or repulsion between two charged things is directly proportional to the product of their charges and inversely proportional to the square of their distance, according to Coulomb's law.

Given, Q1 = +2.3 x 10⁻⁶ C

distance, r = 2m

attraction force, Fa = 0.05N

now by using Coulombs law,

Fa = k×Q1×Q2/r

0.05 =  9×10⁹×2.3 x 10⁻⁶ × Q2 /2

Q2 = 2×0.05/ 9×10⁹×2.3 x 10⁻⁶

Q2 = 9.6×10⁻⁶ C.

Since it is an attractive force therefore charges will be opposite,

The charge on the second sphere is -9.6×10⁻⁶ C.

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Answer:

The answer is 160 N

Explanation:

I did the test

Hope this helps :)

The mass would stay the same, but the weight would be only 16.5%.

Explanation:

Mass is the amount of "matter" in an object, which stays the same everywhere. Weight is the force acting on an object by gravity, which changes depending on nearby bodies. In this case, weight on the moon is 16.5% of that on Earth.

Answer: I think ions I’m not 100% sure if it’s not let me know

Explanation:

Part (a) To find the total capacitance of the circuit, we need to use the formula for capacitors in parallel and series. In this case, the accelerationare in both parallel and series, so we need to break it down into steps.

First, we can find the equivalent capacitance of C1 and C2 in parallel: C12 = (C1 x C2) / (C1 + C2) = (7.8 ?F x 13.2 ?F) / (7.8 ?F + 13.2 ?F) = 4.96 ?F.

Then, we can find the total capacitance of C12 and C3 in series: C123 = 1 / ((1 / C12) + (1 / C3)) = 1 / ((1 / 4.96 ?F) + (1 / 4.9 ?F)) = 2.45 ?F.

Therefore, the total capacitance of the circuit is 2.45 ?F.

Part (b) To find the total energy stored in the capacitors, we can use the formula U = 0.5 x C x V^2, where U is the energy stored, C is the capacitance, and V is the voltage.

For C1, U1 = 0.5 x 7.8 ?F x (12 V)^2 = 673.92 ?J.
For C2, U2 = 0.5 x 13.2 ?F x (12 V)^2 = 1,411.2 ?J.
For C3, U3 = 0.5 x 4.9 ?F x (12 V)^2 = 352.8 ?J.

The total energy stored in the capacitors is U = U1 + U2 + U3 = 2,437.92 ?J.

Therefore, the numerical value of the total capacitance of the circuit is 2.45 ?F and the numerical value of the total energy stored in the capacitors is 2,437.92 ?J.

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Answer:

A horizontal line on a phase change graph means there has been

no change. Often longer periods of research are needed to see

significant change.

The option that summarizes the production of energy at Hoover Dam is A. Mechanical Energy of the flowing water is transformed into electrical energy by rotating coils in a magnetic field, producing an alternating current.

The Hoover Dam is a hydroelectric dam, which means it generates electricity by harnessing the mechanical energy of flowing water. The dam has a system of turbines that are turned by the flow of water, which then rotates coils of wire in a magnetic field.

This interaction produces an alternating current (AC) electrical signal, which is then transformed into usable electrical energy that can be distributed to power homes and businesses.

In this way, Hoover Dam and other hydroelectric dams generate electricity without producing any greenhouse gas emissions, making them an important source of clean and renewable energy.

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Options for this question are:

Waves can be classified into two main types, which are mechanical and electromagnetic waves. They difference cab be described based on the way they move through space and matter.

Mechanical waves are those that require a medium to travel through, whereas electromagnetic waves don't require a medium. Based on this, we can tell the difference between waves.

A wave is a disturbance that propagates through space and matter, transferring energy from one location to another without transporting matter.

Mechanical waves are classified as either transverse or longitudinal waves based on the orientation of their wave motion.

Electromagnetic waves are classified based on their frequency and wavelength, and they are divided into seven categories: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

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The mass of cake deposited per unit volume of filtrate collected (c) and the mass of solids in feed slurry per unit volume of liquid (cF) are related by the filtration coefficient, K.

The relationship is given by the following equation:K = c/cFwhere K is the filtration coefficient, c is the mass of cake deposited per unit volume of filtrate collected, and cF is the mass of solids in feed slurry per unit volume of liquid.The filtration coefficient is a measure of the ability of a filter medium to remove solids from a feed slurry. It is an important parameter in the design and operation of filtration equipment.The filtration coefficient can be determined experimentally by measuring the mass of cake deposited per unit area of filter medium per unit time under specified conditions of pressure, temperature, and slurry concentration. The value of K depends on the properties of the filter medium, the properties of the slurry, and the operating conditions.

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The thermal pollution has has been reduced by the use of cooling towers is the correct statement among the following.

Thermal pollution is primarily a problem in the summer, as the warmer water temperatures can cause an imbalance in the natural thermal structure of the environment, impacting the health of aquatic organisms, plants, and other forms of life. It is rarely lethal, but it can cause a decrease in the growth and reproduction of organisms, and can also lead to increased mortality of aquatic species.

Thermal pollution is not regulated in the US, though some states have adopted their own standards in an effort to reduce thermal pollution. The most common way of reducing thermal pollution is through the use of cooling towers, which transfer the heat from the water to the air.

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complete question: thermal pollution

(a) is primarily a problem in the winter.

(b) is rarely lethal.

(c) is not regulated in the united states.

(d) has been reduced by the use of cooling towers.

The core is almost entirely comprised of metal, notably iron and nickel, in contrast to the crust and mantle, which are rich in minerals. The iron-nickel alloys in the core are denoted by the chemical symbols NiFe.

The densest sort of solid matter in space is metal. They are often made of heavier metals that have not undergone chemical fusion. Iron and nickel are the most frequent metallic elements that have not yet been mixed, at least inside our Solar System. As we can see from Earth's structure, metals may be liquid like rocks in the hot cores of huge bodies. Consequently, the iron- and nickel-rich metals dominate the core. In the case of Earth, we know that the metal is melted in the outer core, yet there is high-pressure solid metal within that liquid (inner core).

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Red shirt appears red because:

a. The shirt reflects red light

A red shirt appears red because the shirt reflects red light.

Thus, An important topic for astronomers is "red shift." The phrase can be taken literally; when the light's wavelength is extended, the light is perceived as having "shifted" toward the red portion of the spectrum.

When a source of sound moves in relation to an observer, sound waves experience a similar phenomenon.

The frequency of sound waves varies if the source of the sound and the observer are moving relative to one another, according to Austrian mathematician Christian Andreas Doppler, who made this discovery.

The observer hears a frequency that is higher when the two are moving closer together and lower when they are moving farther apart and red shift.

Thus, A red shirt appears red because the shirt reflects red light.

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Answer:

the 70kg man

Explanation:

because he has more weight and is moving faster

We are able to walk toward because b) we push on the ground.

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_

_

\( 😘 \: 😉 \: 😈 \; 😫 \: 😤 \: 😡 \: 😘\)

Answer:

c and a

Explanation:

ape x

Explanation:

Position-time graphs measure/express the position of a skater over time relative to the start or finish of the race (depends on how it is used). Note: are the skaters in line vertically or horizontally? Like is one directly behind the other or are they next to each other?

If the two skaters are in line horizontally with each other, then their position will be the same relative to the start or finish of the race. This means if one passes the other one, the position would be different for all times after they pass. On the graph, it would look like one single line at the start (as position is same) which splits into 2 (representing the new difference in position due to 1 passing the other.

If the two skaters are in line vertically, their lines on the graph will appear parallel to each other (assuming they are going same speed) because the position is changing at the same rate, one is just reaching the same point after the other. If the skater behind overtakes the one in front. The lines on the graph will cross and continue either in parallel but with the other line on top to represent the moment where their position is the same right before they pass and after, where the second skater is now in front.

Hope this helped!

Newton's Law of Cooling is described by the first-order linear differential equation dt/dT = k(T - Ts), where T(t) is the temperature of the object at time t, Ts is the surrounding environmental temperature, and k is the constant of proportionality.

The temperature of an object, governed by Newton's Law of Cooling

(i) To find the temperature of the object as a function of time, we first solve the differential equation dt/dT = k(T - Ts). This is a separable differential equation, and the solution can be obtained by rearranging and integrating:

dt/dT = k(T - Ts)

dt = k(T - Ts) dT

∫ dt = ∫ k(T - Ts) dT

t = k * ∫ (T - Ts) dT

t = k * (T^2/2 - Ts*T) + C

Now, we apply the initial condition T(0) = T0. At t=0, the temperature of the object is T0:

T(0) = T0

k * (\(T0^2\)/2 - Ts*T0) + C = T0

C = T0 - k * (\(T0^2\)/2 - Ts*T0)

C = T0 - k * (\(T0^2\)- 2 * Ts * T0) / 2

C = T0 - k * (\(T0^2\) - 2 * Ts * T0) / 2

So, the equation becomes:

t = k * (\(T^2\)/2 - Ts*T) + (T0 - k * (\(T0^2\)- 2 * Ts * T0) / 2)

(ii) Now, we can find the temperature of the object after 5 minutes (t = 5 minutes). We'll use the initial condition T(0) = T0 and the formula obtained in part (i):

t = 5 minutes = 5/60 hours = 1/12 hours

T(t) = Ts + (T0 - Ts) * exp(-kt)

T(1/12) = Ts + (T0 - Ts) * exp(-k * (1/12))

This equation gives us the temperature of the object after 5 minutes, considering the given initial temperature T0 and the surrounding environmental temperature Ts.

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Answer:

True

Explanation:

Answer:

Increase the power of a hypothesis test

Use a larger sample. ...

Improve your process. ...

Use a higher significance level (also called alpha or α). ...

Choose a larger value for Differences. ...

Use a directional hypothesis (also called the one-tailed hypothesis).

The two main ways of increasing the current in an electrical circuit are by increasing the voltage or by decreasing the resistance.