The peak intensity of radiation from a star named sigma is 2 x 10^6 mmkay. What is the average surface temperature of Sigma rounded to the nearest whole number?

Answer: C) Both are located to the right of visible light on the spectrum

Explanation:

BECAUSE....

Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They travel with the speed of light.

Both radio and microwaves are electromagnetic waves which are adjacent to each other in electromagnetic spectrum towards lower frequency and higher wavelength.

The relationship between wavelength and frequency of the wave follows the equation:

[tex]\nu=\frac{c}{\lambda}[/tex]

where,

v = frequency of the wave

c = speed of light  

[tex]{\lambda}[/tex]= wavelength of the wave

* Hopefully this helps: ) Mark me the brainliest:)!!

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Answer:

C.) Both are located to the right of visible light on the spectrum

     ↓↓↓

Explanation:

Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They travel with the speed of light.

Both radio and microwaves are electromagnetic waves which are adjacent to each other in electromagnetic spectrum towards lower frequency and higher wavelength.

The relationship between wavelength and frequency of the wave follows the equation:

where,

v = frequency of the wave

c = speed of light  

= wavelength of the wave               ↑↑↑

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~Nuha

   <3

Kinetic energy

When the pendulum hit the metal lid or pan it shakes

Answer:

Using the sun's energy to heat a building; the windows, walls, and floors can be designed to collect, store, and distribute solar energy in the form of heat in the winter (and also to reject solar heat in the summer).

Lemme know if this helped :D!

a system of putting the sun's energy to use without requiring mechanical devices to distribute the collected heat.

Yes, a metal piece of 18cm away can be attracted by a magnet that has 20cm of magnetic field.

The magnet is having a magnetic field of 20cm. And the Metal piece is 18cm far from the magnet.  Usually, magnetic fields decrease in strength as you move farther away from the magnet. The strength of the attraction will depend on various factors, including the strength of the magnet, the properties of the metal, and the orientation of the magnet

However, since the metal is within the 20 cm range of the magnet's magnetic field, it experiences some level of attraction.

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Final answer:

A piece of metal 18 cm away from a magnet, which has a 20 cm magnetic field, will be attracted to the magnet because it falls within the magnet's magnetic field range, where magnetic forces are strong enough to attract ferromagnetic materials.

Explanation:

If a magnet has a 20 cm magnetic field and a piece of metal is 18 cm from the magnet, the piece of metal will indeed be attracted to the magnet. This is because the piece of metal falls within the magnet’s magnetic field range. The magnetic field is the region around a magnet where magnetic forces are exerted on ferromagnetic materials like iron, nickel, and cobalt. Since the piece of metal is closer than the full extent of the magnetic field (20 cm), it falls within the sphere of influence where it can be attracted to the magnet.

Magnetic fields are invisible but can be visualized through the use of iron filings or other methods. They illustrate how magnetic forces decrease with distance. However, within its range, a magnet can exert a force sufficient to attract compatible materials. Hence, a piece of metal located 18 cm from a magnet, within the 20 cm range of its magnetic field, will be subject to this magnetic force and drawn towards the magnet.

W = 4.9N. The weight of a basketball with a mass of 0.5Kg is 4.9N.

The weight of an object is the force of gravity on the object and can be defined as the product of the mass by the acceleration of gravity, w = mg.

W = (0.5Kg)(9.8 m/s²) = 4.9N

The weight of the basketball is calculated by multiplying the mass of the ball by the acceleration due to gravity. The gravitational potential energy is calculated using the height of the ball above the ground when the player is about to shoot.

The weight of a basketball with a mass of 0.5 kg can be found by using the formula for weight (W = mg), where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s2 on Earth). To calculate the gravitational potential energy (GPE) of the netball when the player is about to shoot, the formula for potential energy (GPE = mgh) is used, where h is the height of the ball above the ground. The ball's mass is given as 0.5 kg, and from the provided information, the total height (h) when she is about to shoot is the sum of her height and the distance the ball is held above her head (1.7 m + 0.5 m), which totals to 2.2 m. Therefore, the gravitational potential energy at that moment is GPE = 0.5 kg × 9.81 m/s2 × 2.2 m.

The bottom of this wave is called the Trough.

Answer:

Time is represented by dots at 1-second intervals.  

Velocity vectors change direction as the object’s direction changes.

Explanation:

I just did the problem and got it right! :)

The acceleration of circular path is continuous and the direction of the acceleration is inward.

Circular motion:

It is the motion of an object in the circular path at constant velocity.

Velocity if the circular path is constant and the direction of velocity is tangent to the object' motion.

The acceleration of circular path is continuous and the direction of the acceleration is inward.

Therefore, for uniform circular motion maps, time is represented as the dots of one second intervals.

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Answer:

1.transfer energy from one place to another.

2.can be reflected.

3.can be refracted .

Explanation:

I only know that much

The four common properties of waves in the electromagnetic spectrum are wavelength, frequency, amplitude, and speed. These properties are integral to defining how electromagnetic waves behave and are used in technological applications.

Four wave properties that are common to all members of the electromagnetic spectrum include:

Wavelength: This is the distance between two consecutive peaks or troughs of the wave. Different parts of the electromagnetic spectrum have different wavelengths, from short gamma rays to long radio waves.

Frequency: Refers to the number of wave cycles that pass a given point per unit time. Frequency and wavelength are inversely related by the speed of light.

Amplitude: This represents the height of the wave peaks, corresponding to the intensity of the radiation.

Speed: All electromagnetic waves travel at the speed of light in a vacuum, which is approximately 299,792,458 meters per second (c).

These properties are essential for understanding how electromagnetic waves interact with matter and how they are utilized in various applications.

Answer:

I think it's Law of Motion.

Explanation:

Hope my answer has helped you!

I believe it is the Law of motion. The frog leaping upward off his lily pad is law of motion

Answer: Open Series Circuit

Explanation: In a Series Circuit everything is connected together, but in Parallel Circuit it is not, it's Parallel R1, R2, etc.

The question related to understanding open and closed as well as series and parallel circuits in physics. In series circuits, current will not flow if there's an open connection, while in parallel circuits, it can still flow through other branches. Household electrical systems typically employ both series and parallel circuits for efficiency and functionality.

The student's question pertains to the behavior of electrical circuits, specifically the difference between open and closed circuits, as well as series and parallel configurations. An open circuit is one where the path for the electric current is interrupted, preventing current from flowing. This can occur in both series and parallel circuits. Conversely, a closed circuit is one where the path for the current is complete, allowing the current to flow unimpeded. This too can happen in both series and parallel circuits.

In a series circuit, all components are connected end-to-end to form a single path for current flow. If any component is disconnected, creating an open circuit, no current will flow through the circuit. In a parallel circuit, the components are connected alongside each other with their own separate paths for current. If one branch is open, current can still flow in the other branches. Therefore, choice (B), an open series circuit, will not allow the flow of current, but choice (C), a closed parallel circuit, and choice (D), a closed series circuit, will allow current to flow.

Looking at household electrical systems, a combination of series and parallel circuits is often used for efficiency. For example, a house's lighting system may use parallel wiring to ensure that if one light bulb fails, the others continue to operate. Similarly, complex appliances like a washing machine may use both types of circuits to control different components accurately.

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Answer:

a

Explanation:

Answer: D (sandy clay loam)

Explanation:

It is because it is 55 percent sand, and 25 percent clay, so it has to be more sandy than silty. Much of it is by sand, so it is sandy. Loam is a fertile soil of clay and sand, so it is D.

Answer:

D. sandy clay loam

Explanation:

This soil type is normally made up of sand along with varying amounts of silt and clay.

Answer:

D.Radiography uses ionizing radiation, but sonography does not.

Explanation:

Radiography is the process of using x-rays or gamma rays to capture images showing internal parts of the human body for medical examinations.X-rays are commonly used in this process.x-rays are categorized as a cancer causing agent thus exposure to such rays could cause development of cancer.In sonography, high frequency sound waves are used. There is no exposure to any ionization radiation like in radiography.

a. distance: 10 km

The distance covered is equal to the sum of the distance of each part of the journey.

In this case, Sarah's trip consists of three parts:

- 2 km north from the house to the grocery store

- 3 km north to grandma's house

- 5 km back to reach home

So the distance covered is the sum of all these parts:

d = 2 km + 3 km + 5 km = 10 km

b. displacement: 0

Instead, displacement is defined as the distance (measured in a straight line) between the final point of the motion and the initial point of the motion. So displacement does not depend on the path taken by the object, but only on the final and initial position.

Here we have:

- Final position of Sarah's journey: home

- Initial position of Sarah's journey: home

So, the displacement is zero, because the final point corresponds to the initial point.

Answer:

it is the same size as the object ( B )

Explanation:

An image formed/produced by a plane mirror is different than an image produced by a a convex mirror because image produced by a plane mirror appears the same size as the object while the image produced by a convex mirror does not appear is smaller than the object.

images produced by a convex mirror is usually smaller than the original object, they are upright and they are virtual. they also seem to appear behind the convex mirror. while plane mirror produce images of same size as the object.

Answer:

D) transferred electron provides both elements with a full outer energy level.

Explanation:

Ionic or Electrovalent bonds are interatomic bonds that are formed as result of transfer of electrons between two atoms. The more electronegative atom would attract the electron to itself.

Na, sodium has an electronic configuration of 2,8,1 with a Valence electron.

Cl, chlorine is an halogen with an electronic configuration of 2,8,7.

When atoms combines, the goal is to form an octet configuration to mimic those of noble gases.

If Na, loses one electron, it would have a configuration of 2,8 which looks like a Neon atom. This configuration is stable for Na.

If the electron lost is gained by Cl, the configuration becomes 2,8,8 and resembles an Argon atom.

We can see that by the loss and gain of electrons between Na and Cl the atoms attain a stable octet configuration.

The atom Cl has more affinity for the electron. This would leave a net negative charge on its ion.

The electropositive and metallic Na would donate the electron. Its atom would then show a perfect octet of Ne, Neon. This leave a net positive charge on its ion.

Therefore, the bond type between Na and Cl is an Electrovalent bond.

Answer:

Greatest-A Middle-B Last-C

Answer:

Earth is heated by energy from the Sun.

Explanation:

This is correct on edge.

Radiation examples: Earth heated by Sun's energy, soup microwaved. Other options involve conduction or convection, not radiation.

Radiation refers to the transfer of heat energy through electromagnetic waves. Based on the given options, the examples of radiation are:

Earth is heated by energy from the Sun.

This is an example of radiation because the Sun emits heat energy in the form of electromagnetic waves, which travel through the vacuum of space and reach Earth, warming it in the process.

Soup is heated in a microwave.

Microwaves use electromagnetic radiation to heat food. Microwaves are a form of electromagnetic waves, and they directly heat the water molecules inside the food, causing it to heat up.

Water is boiled in a pot on a stove burner.

This is also an example of radiation. When the stove burner heats the pot, the pot, in turn, heats the water through the process of conduction, but there is also radiation involved. As the pot gets hot, it emits infrared radiation, which further heats the water.

The other examples mentioned (Troy's hand being burned, hot dog getting warm over a fire) involve conduction and convection, not radiation.

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Circuit-A is a series circuit.  There's only one road that electrons can take to get from one battery terminal to the other one.  There's no point in the circuit where an electron has to decide which path to take.

Circuit-B is a parallel circuit.  At each of the two 'dimples' across the top, an electron has a choice:  It can turn right and go through a bulb, OR keep going straight on to the NEXT bulb.

Circuit-C is a series circuit.  There's only one road that electrons can take to get from one battery terminal to the other one.  There's no point in the circuit where an electron has to decide which path to take.

Circuit-D is called a "series-parallel circuit", because it has characteristics of both kinds.  Devices #2 and #3 are in parallel, but Device #1 is in series with them.

Circuit-E is a parallel circuit.  There are two places across the top where an electron has a choice:  It can decide to take a right turn and go through the bulb OR keep going straight on to the next bulb.  

Answer:

250 N

Explanation:

The acceleration of the 50 kg cart under 750 N of force is:

F = ma

750 N = (50 kg) a

a = 15 m/s²

To accelerate from 13 m/s to 17 m/s takes:

v = at + v₀

17 m/s = (15 m/s²)t + 13 m/s

t = 4/15 s

To accelerate in 3 times as many seconds (t = 4/5 s):

17 m/s = a (4/5 s) + 13 m/s

a = 5 m/s²

So the force is:

F = ma

F = (50 kg) (5 m/s²)

F = 250 N

You could also have reasoned this without the calculations.  3 times the time means 1/3 the acceleration which means 1/3 the force.

Answer:

C. is correct option.

Explanation:

Speed of sound in a particular temperature depends upon bulk modulus and density of material.

It is directly proportional to bulk modulus of material and inversely proportional to the density.

As we move from air to aluminium, their density increase which decrease speed of sound in them. But as we move down to their bulk modulus also increases and increase in that bulk modulus is too much comparable to their increase in density.(You can google their density and bulk modulus respectively).

So, at the end their bulk modulus factor overcome the sound that decreased due to density.

And overall sound increases .

Therefore the speed of sound is higher in solids than in liquids.

Answer: A

Explanation:the other ones was wrong

Answer:

480 J/kg/°C

Explanation:

To find the heat capacity of the metal, we must first find the heat lost by the metal, which means we must find the heat gained by the water.

Heat gained by water:

q = mCΔT

q = (0.150 kg) (4200 J/kg/°C) (20°C - 15°C)

q = 3150 J

Heat lost by metal:

q = mCΔT

-3150 J = (0.100 kg) C (15°C - 80°C)

C ≈ 480 J/kg/°C

Answer:

The current through the circuit is 5A

Explanation:

Ohm's Law

The intensity of current through a circuit is directly proportional to the voltage or voltage of the same and inversely proportional to the resistance it presents.

[tex]I=\frac{V}{R}[/tex]

Where I is the intensity that is measured in amperes (A), V the voltage that is measured in volts (V); and R the resistance that is measured in ohms (Ω).

With a 50V battery and a 10Ω

[tex]I=\frac{50V}{10ohms}=5A[/tex]

Answer:

The correct answer is ice caps.

Explanation:

Ice caps are the largest source of available freshwater on Earth; especially in Antarctica.  

Answer:

ice caps is the correct answer.

Explanation:

The largest source of available freshwater on Earth is ice caps.

Freshwater is a naturally occurring water and concentration of the dissolved salts is low.

Fresh water carries water in ice caps as the largest sources and water in glaciers, ponds, lakes, streams, rivers, ice sheets.

Antarctica contains 90% of the fresh water on the Earth's surface but it is iced in the form of the ice caps.

Recoil = Cannon Ball / cannon x speed of cannon ball.

7.42 = 32.5/ cannon x 388

7.42 = 32.5 x 388 / cannon

7.42 = 12,610 /cannon

7.42 x cannon = 12610

Cannon = 12610/7.42

Cannon = 1699.46 kg. ( Round answer as needed)

Answer:

volcanic eruptions

Explanation:

The volcanic eruptions are the ones that manage to cause changes to the lithosphere by building up new material on the surface. Through the volcanic eruptions we have release of pyroclastic material on the surface, and more importantly and in much higher amount lava flows. The lava flows quickly cool off on the surface on the Earth, and as they do they pile up new layers of igneous rocks, thus new crust on the surface of the Earth, causing changes on the lithosphere and shaping it for the foreseeable future.

Answer:

A. volcanic eruptions

Explanation:

the answer is (c) because if you say

[tex]moment = f \times d| = 500n \times 2.0m = 1000nm[/tex]

The total moment about point P of the diver and the board is 1000N.m. The correct option is C.

The equal and opposite force acting at a point from the axis of rotation is called the moment of force.

M = F x r

Given is the force = 500N and the distance between diver and board r =2m, the moment will be

M = 500 x 2

M  = 1000N.m

Thus, the correct option is C.

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Answer:

11.3 A

Explanation:

First of all, we need to find the equivalent resistance of the two appliances in parallel, which is given by:

[tex]\frac{1}{R_{12}}=\frac{1}{R_1}+\frac{1}{R_2}=\frac{1}{15 \Omega}+\frac{1}{20 \Omega}=0.116 \Omega^{-1}\\R_{12} = 8.6 \Omega[/tex]

Then we know that these two appliances are connected in series to another resistor of

[tex]R_3 = 2 \Omega[/tex]

So the total resistance of the circuit is

[tex]R=R_{12}+R_3 = 8.6\Omega + 2\Omega = 10.6\Omega[/tex]

And since we know the voltage of the source,

V = 120 V

We can now calculate the current in the circuit by using Ohm's law:

[tex]I=\frac{V}{R}=\frac{120 V}{10.6 \Omega}=11.3 A[/tex]

Answer:

Explanation:

An endothermic reaction absorbs heat, so it will be cold to touch.

When it will be cold to touch, an endothermic reaction will be present.

The endothermic reaction is the reaction which absorbs heat and reduces the temperature.

When we are feeling cold to touch any object, that object has undergone the reaction like endothermic reaction.

For example: In refrigerator, the endothermic reaction will let each food item to make cold.

Thus, endothermic reaction feels cold to the touch.

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Answer:

[tex]\Delta T = 0.81 ^oC[/tex]

Explanation:

As we know by energy conservation

All its kinetic energy will convert into thermal energy to raise its temperature

[tex]\frac{1}{2}mv^2 = ms\Delta T[/tex]

now divide both sides by mass of the object

[tex]\frac{1}{2}v^2 = s\Delta T[/tex]

so change in temperature is given as

[tex]\Delta T = \frac{v^2}{2s}[/tex]

[tex]\Delta T = \frac{25^2}{2\times 387}[/tex]

[tex]\Delta T = 0.81^oC[/tex]

To calculate the increase in temperature for the copper sphere, one needs to equate its kinetic energy to the heat gained by the copper and solve for the temperature increase using the copper's specific heat capacity. Without knowing the mass of the sphere, the calculation cannot be completed.

Understanding the Increase in Temperature of a Copper Sphere

When a copper sphere moving at 25 m/s hits another object and all its kinetic energy (KE) is converted into thermal energy, the increase in temperature can be calculated using the equation for kinetic energy and the formula for heat transfer involving specific heat capacity:

KE = ½ * m * v2

Where m is the mass of the sphere and v is the velocity. Once the kinetic energy is known, his is linked to the thermal energy (ΔQ) gained by the copper sphere:

ΔQ = m * c * ΔT

Here, c is the specific heat capacity of copper, and ΔT is the temperature increase we need to find. Given that the entire KE is converted to thermal energy, we set ΔQ equal to KE and solve for ΔT, which directly gives us the increase in temperature of the copper sphere.

Without the mass of the copper sphere, we cannot determine the exact temperature increase from the information provided. However, if we have the mass, we can use the above equations to find the numerical value of the increase in temperature.