What causes an electric current in a wire?

Answer: Wavelength increases and frequency decreases.

Explanation:

Electromagnetic spectrum is formed of radiations varying in frequency and wavelength like gamma rays, radio waves, UV rays, visible, and microwaves. We know that wavelength is proportional to frequency. Since the wavelength is proportional to frequency, the wavelength increases.

Electromagnetic waves, moving from gamma rays to radio waves along the electromagnetic spectrum, the wavelength increases and frequency decreases.

The waves that are related to both electricity and magnetism are known as electromagnetic waves. These waves are made up of time-varying electric and magnetic fields that travel over space.

These waves are made up of time-varying electric and magnetic fields that travel over space. These waves, which are related to electricity and magnetism, would undoubtedly spread in space.

Wavelength is inversely proportional to the frequency. The wavelength of the gamma rays are more than the radio wave.

So that Electromagnetic waves, moving from gamma rays to radio waves along the electromagnetic spectrum, the wavelength increases and frequency decreases.

Thus, option C is correct.

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Answer:

The atmosphere extends up to an altitude of about 200 miles. ( second choice)

Answer:

200 miles

Explanation:

the second chose

Answer:

The instantaneous velocity at any time during the second hour of the trip is 60 mph east

(C) is correct option

Explanation:

Given that,

Distance in first hour = 25 miles

Distance in second on hour = 60 miles

Instantaneous velocity :

Instantaneous velocity is equal to the distance divided by the time

We need to calculate the instantaneous velocity at any time during the second hour of the trip

Using formula of instantaneous velocity

.[tex]v = \dfrac{d}{t}[/tex]

Where, d = distance

t = time

Put the value into the formula

[tex]v = \dfrac{60}{1}[/tex]

[tex]v= 60\ miles/hr[/tex]

The direction of the instantaneous velocity is in east .

Hence, The instantaneous velocity at any time during the second hour of the trip is 60 mph east

The instantaneous velocity at any time during the second hour of the trip is 60 mph east.

Instantaneous velocity is the rate of change of position for a time interval.  The instantaneous velocity is the velocity at a particular time.

Instantaneous Velocity Formula of the given body at any specific instant can be formulated as:

where

Δx = change in position

Δt = small time interval

During the second hour of the trip, the instantaneous velocity at that particular time is

The instantaneous velocity = 60 mph east

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Answer:

Ryan is examining the energy of the particles in a bar of gold. Ryan is most likely studying internal energy

Explanation:

Ryan is examining the energy of the particles in a bar of gold. Ryan is most likely studying internal energy.

The energy is the ability to do work. It can be external or internal.

Any object is made up of atoms or molecules or particles equal to the Avogadro number. It has the energy occupied into its volume. This energy is contained by each and every particle of the atom.

The study of the gold particles is the study of internal energy.

Thus, Ryan is most likely studying internal energy.

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[tex]\boxed{KE=\dfrac{1}{2}mv^2}[/tex]

Hope this helps.

r3t40

Answer:

Explanation:

[tex]{\underline{\underline{\bf{\orange{What \: is \: Kinetic\: Energy\:?}}}}}[/tex]

[tex]{\underline{\underline{\bf{\green{Formula\:Derivation\::-}}}}}[/tex]

[tex]\star\:\sf{Consider,}[/tex]

[tex]:\implies\:\:\sf{v^{2} -u^{3} = 2a}[/tex]

[tex]:\implies\:\:\sf{0-v^{2} = 2as}[/tex]

[tex]:\implies\:\:\sf{-v^{2}=2as}[/tex]

[tex]:\implies\:\:\sf{a = \dfrac{-v^{2}}{2s}}[/tex]

The opposing force on the body,

By Newton's 3rd law, the force applied by the body :-

[tex]:\implies\:\:\sf{-F = -\bigg( -\dfrac{mv^2}{2s}\bigg) = \dfrac{mv^2}{2s}}[/tex]

[tex]{\boxed{\bf{W = Force \times Displacement}}}[/tex]

[tex]:\implies\:\:\sf{W = F \times S}[/tex]

[tex]:\implies\:\:\sf{W = \dfrac{mv^2}{2s}\times s = \dfrac{1}{2}mv^2}[/tex]

[tex]\star\:\:{\underline{\boxed{\sf{\red{K.E = \dfrac{1}{2}mv^{2}}}}}}[/tex]

Answer:

To know the substances and number of atoms and molecules involve in the chemical equation.

Explanation:

The chemical equations are the linear presentation of chemical reactions. In our day to day life, different kinds of chemical reactions occur such as rusting of iron, curdling of milk. To represent such reactions we use chemical equations, where the left-hand side components are reactants and right-hand components are products. The reactants are the substances that are combined to form the reaction and results of the product. One can write chemical equations in words or in symbols. From the chemical equation, one can know how many numbers of atoms or molecules involve in the chemical reaction.

Answer:

Sample Response: Chemical equations show how chemicals interact when a reaction occurs. They use symbols and formulas to show the chemical reaction so that chemical names do not need to be written out. They also help keep track of all elements and the number of atoms of each element on each side of the equation.

Explanation:

Answer:

a convex mirror

Explanation:

a convex mirror is a type of curved mirror that uses its outside as the reflecting surface;

A mirror whose reflecting surface curves outwards is called a convex mirror. In convex mirrors, the bulging portion is also the reflecting surface. These types of curved mirrors are widely used in vehicles as rear view mirrors since they are able to form diminished images and thus give us a larger view.

a convex mirror

Explanation:

Answer:

434.4 N

Explanation:

There are two forces acting on the person when it is at the bottom of the trajectory:

- Its weight W = mg (m= mass, g= acceleration of gravity), acting downward

- The normal reaction N, acting upward

So the net centripetal force Fc is given by

[tex]F_c = N- mg [/tex]

Substituting:

N = 895 N

m = 47 kg

We find:

[tex]F_c = 895 N - (47 kg)(9.8 m/s^2)=434.4 N[/tex]

Answer:

434 also works for acellus

Explanation:

Answer:

Ans is B option

Explanation:

e.g oxygen has 8 atomic number means it has 8 protons

Answer:

Newton was able to state the Law of Universal Gravitation: “Every particle of matter attracts every other particle with a force proportional to the product of the masses of the two particles and inversely proportional to the square of the distance between them.” Stated more simply, the gravitational attraction between two bodies decreases rapidly as the distance between them increases.

Explanation:

this means if you put Newton’s three Laws of Motion which are:

01 - Every body continues at rest or in motion in a straight line unless compelled to change by forces impressed upon it. (Galileo first formulated this, and Newton recast it.)

02 - Every change of motion is proportional to the force impressed and is made in the direction of the straight line in which that force is impressed. (A planet would continue outward into space but is perfectly balanced by the Sun’s inward pull, which Newton termed “centripetal” force.)

03 - To every action there is always opposed an equal reaction, or the mutual action of two bodies on each other is always equal and directed to contrary parts.

Final answer:

A psychrometer is not used to measure wind; it's used to calculate humidity. Wind measurement is done using a wind sock, weather vane, and anemometer, with the latter measuring wind speed.

Explanation:

When it comes to measuring wind, there are specific instruments designed for this purpose. A psychrometer is not used to measure wind; it measures humidity levels by using a pair of thermometers, with one being covered with a wet cloth and the other kept dry. The difference in temperature readings between the two is used to calculate humidity.

On the other hand, instruments such as a wind sock, weather vane, and anemometer are specifically designed to measure various aspects of wind. A wind sock and a weather vane are used to determine wind direction, while an anemometer measures wind speed, often in miles per hour, kilometers per hour, or knots.

All scientific investigations begin with some sort of observation.

So, although there are different ways to approach a scientific investigation, all scientific investigations begin with some sort of observation.

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Answer: The location where two air masses meet.

Explanation:

A front is a middle zone between two air masses. Each air mass exhibit different densities. The air masses also differ in humidity and temperature. The front is responsible for changing the climatic condition of a region.

Answer:

The location where two air masses meet.

Answer:

4th

Explanation:

The line is nonlinear because it does not stay in a line i curves

Fourth graph represents a nonlinear relationship.

A linear relationship exists when changing one variable n times will result in a comparable change in the other variable of n times. In other words, doubling one variable also doubles the other.

To completely comprehend the world around us, it is vital to examine non-linear relationships because they are fundamental to the majority of physical and statistical events.

Numerous extremely significant physical phenomena are linear, and linear interactions are the most straightforward to comprehend and research.

However, it does not encompass all of our mathematical methods, and non-linear correlations play a crucial role in many of the most significant and fascinating physical and social phenomena today. Here 4th graph represents a nonlinear relationship.

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For this case we have that by definition, a micrometer is equivalent to a thousandth of a millimeter, that is, 0.001 millimeters.

Then, in other words, we have 0.001 millimeters in a micrometer.

Answer:

In a micrometer there are 0.001 millimeters.

Answer:

In an exothermic reaction the energy gained by the surroundings must be equal to the energy lost by the reaction.

Explanation:

Exothermic reactions occur by the loss of energy in the form of heat to the surroundings (apparatus and the system).

The heat gained can be quantitatively analysed and measured  provided no product escapes the system and it is numerically equal to the amount of heat lost by the reaction.

Answer:

~~Now, you have left your question very open ended and didn't ask for any particular kind of answer so I'll do my best to get what you're looking for.~~

A physical change in a substance doesn't change what the substance is. It can possibly melt or freeze an object. I mean heat makes things expand while cooling makes them retract.... In chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

Answer:

Sulfur

Explanation:

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Every acid contains hydrogen atoms. Hydrogen is what allows these substances to act as acids, capable of donating hydrogen ions (protons) in reactions.

Explanation:

The correct answer is that every acid contains hydrogen atoms. In the context of acids, a hydrogen atom is usually present as a part of the acid's chemical formula and can be released as a proton (H+) during the dissociation process in a solution. Acids are substances that donate a hydrogen ion to another substance in a chemical reaction. For example, sulfuric acid, H2SO4, contains hydrogen atoms that can be released as hydrogen ions. Other examples include hydrochloric acid (HCl), which also contains hydrogen atoms, and nitric acid (HNO3), with its single hydrogen atom.

Answer:

423.36 J

Explanation:

Change in gravitational potential energy= mgh where m is the mass of the displaced object g is the acceleration due to gravity and h is the displacement along a plane parallel to gravity vector.

From the question.m= 72kg, h=60cm=0.6m

g=9.8m/s²

Δ PE= 72kg×9.8m/s²×0.6m

=423.36 J

The change in potential energy of the person is 423.36 J.

Potential energy is the energy of a body by virtue of its position in the gravitational field.

To calculate the increase in the gravitational potential energy of the person, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The change in potential energy of the person is 423.36 J.

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equal and opposite reaction.

Answer:

A

Explanation:It is relatively massive

Its direction of deflection shows it possitively charged

It brings one element into another by bombardment(transmutation)

Answer:

A. It increases the number of protons

Explanation:

When alpha radiation is emitted by a particle, its number of protons decrease by two, that is, the particle lost two protons.

Option B is true because alpha particle is composed by 2 protons and 2 neutrons.

Option C is true because a change in the structure of atomic nuclei of the parent particle is produced.

Option D is correct because alpha radiation is heavier than beta and gamma radiations.

Answer:

Explanation:

A field is a region of space where force is felt or exerted.

A magnetic field as such is an area where the impact of magnetic force can be felt.

The earth behaves like a giant bar magnet due to movement of liquid metals in the outer core. This giant magnet exerts a magnetic field on the entire earth. The core of the earth falls at the centre of the globe and it dissipiates magnetic force outwards.

In terms of the magnetic field of the earth, it covers the entire planet due to the location of its source.

The poles are deflected just a little bit from the geographic north and south by a little angle. This angle is known as magnetic declination. It varies from time to time due to the strength of the magnetic field.

A compass needle aligns with Earth's magnetic field, with its north pole pointing towards the geographic North Pole, which is near Earth's magnetic south pole. The Earth's magnetic field is extensive, reaching far into space, and the locations of magnetic poles can shift and even reverse over time.

A compass contains a magnet which aligns itself with the Earth's magnetic field. A compass needle's north pole is attracted to Earth's magnetic south pole, which is actually near the Earth's geographic North Pole. Here are three predictions based on what we know about magnetic forces and Earth's magnetism:

The reasoning behind these predictions is that a compass needle is essentially a small bar magnet, and it aligns itself so that its north-seeking pole (magnetic north) points towards the Earth's magnetic south pole due to magnetic attraction.

Answer:

There are many forms of potential energy, including, kinetic energy, gravitational, magnetic, electrical, chemical, and elastic potential energy.

Answer:

C. South pole on the left end and north pole on the right end

Explanation:

From the figure, we can conclude that the poles of the magnet are on either sides of the magnet

Therefore, options 1 and 2 are excluded

It is a convention that the magnetic field lines move out of the north pole of a magnet and into the south pole of the magnet

From the figure, we can see that the magnetic field lines are moving out from the right end and into the left end

This means that the north pole is at the right end and that the south pole is at the left one

Hope this helps :)

Answer: South Pole on the left end and North Pole on the right end

Explanation:

The correct answer is A. Direction

Explanation:

The word "displacement" is used to describe the change in the position of a body or object. Moreover, displacement involves direction (vector of movement) because it considers not only the distance the body moved but also the initial and final position of it. Indeed, the displacement is determined by drawing a straight line between point A (initial position) and point B (final position), which helps to determine the direction vs. movement of the body. According to this, displacement is distance combined with direction.

Displacement of an object is the distance of that object combined with the direction. Option A is the correct option.

Displacement is the shortest distance between the initial point to the final point. Displacement is the vector quantity , which means it has both magnitude as well as direction.

Let suppose a object move on a circular path, and stop where, the object started taking a full round. Then the displacement travelled by the object is zero, as the initial and final point is same and body does not displace any amount from its initial position.

Distance is the total amount of space between the two points, in a particular path. Distance is the scaler quantity, which has only magnitude and not the direction.

Let suppose a object move on a circular path, and stop where, the object started taking a full round. Then the distance travelled by the object equal to the circumference of the circular path.

As displacement is the vector quantity while the distance is scaler quantity. This means that the displacement has both magnitude as well as direction, whereas the distance has only magnitude and not the direction.

Thus, by adding the direction with the distance travelled by an object gives the displacement of that object.

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Answer:

A. They are large and so they have a lot of gravity

Explanation:

The moons are formed from the ingredients that are left over from their parent planet or can also be formed as asteroids that are captured by planets with a stronger gravitational force. Since the giant planets have a large mass, they had enough material to be they will form the moons and by having a much greater gravitational attraction they manage to capture a large number of asteroids.

They are large and so they have a lot of gravity is the correct answer. The gravitational force of a gas giant is capable of capturing and retaining smaller objects, such as asteroids or icy bodies, as moons.

Gas giants, such as Jupiter and Saturn, have many moons primarily because of their large size and strong gravitational pull. The gravitational force of a gas giant is capable of capturing and retaining smaller objects, such as asteroids or icy bodies, as moons. The immense mass of the gas giants allows them to exert a significant gravitational influence on nearby objects, attracting them into stable orbits around the planet.

Option B, referring to violent surface conditions emitting rocks that form moons, is not an accurate explanation.

Option C, stating that gas giants are located within an asteroid belt, is incorrect. Gas giants are typically located beyond the asteroid belt in our solar system.

Option D, mentioning rings of particles eventually forming moons, is not entirely accurate either. While gas giants can have ring systems composed of particles, these particles generally remain in the form of rings and do not coalesce to form moons.

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For the given question, the mass of the cart is 320 Kg.

Answer: Option B

Explanation:

According to Newton’s second law, the rate of change in momentum exerted by an object is directly proportional to the unbalanced force exerted on the object. So

        [tex]\text {Unbalanced Force } F=\frac{d(\text {momentum})}{d t}[/tex]

As momentum of an object is derived from the product of mass and velocity of the object. Thus,

                        [tex]\text {Momentum}=m \times v[/tex]

So,

               [tex]\text {Unbalanced Force } F=\frac{d(m \times v)}{d t}[/tex]

As mass of an object tend to be same irrespective of time and velocity can vary with time, we obtain,

[tex]\text {Unbalanced Force } F=m \times \frac{d v}{d t}=m \times \text { accelearation }[/tex]

As it is known that rate of change in velocity is equal to the acceleration exerted by the object. Thus, Newton’s second law can also be stated as that the external unbalanced force exerted on the object will be equal to the mass of the object and the acceleration exerted by the object. So in the present case, as we known the force and acceleration, the mass of the object will be determined by the formula F = ma.

               [tex]F=m \times \text {acceleration}[/tex]

Therefore,

             [tex]\text {Mass}=\frac{\text { Force }}{\text { Acceleration }}=\frac{8480}{26.5}=320 \mathrm{kg}[/tex]

Hello again! Thanks for acknowledging me in your question^^ I’m a he though^^ Okay, so moving onto my answer, it is D) semidiurnal tides. The proof that I’m going to provide to you isn’t exactly the answer but is says everyday so it should be correct. Please trust me and tell me if the answer is correct or not. I would choose that answer though. Here is proof:

Answer:  semidiurnal tides

Explanation: I"M ON K12

And this correct because Semidiurnal Tides it does when an area covered by the ocean faces the moon, the moon's gravitational force on the water causes a high high tide.

Answer:

die

Explanation:

Our sun is a star. As all stars, our sun ages, and as it does it experiences changes. After the hydrogen is burned up, the sun will start to expand, becoming significantly larger in volume than it is now. After this process ends, the sun will start to shrink, becoming a dwarf, much smaller and much less bright than it is now. Eventually, the sun's existence will come to an end, and at the end of its dwarf phase it will explode, destroying the objects around it as well.

Hello! My name is Zalgo and I shall be helping you out on this mystical day~! The answer that you are looking for is... "In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. It is calculated by the formula W = f x d. Therefore, we calculate the problem above as follows:

W = f x d

4000 = f x 20

f = 200 N"

I hope this answer helps! :P

"Stay Brainly and stay proud!" - Zalgo

(By the way, can you give me Brainliest? I'd greatly appreciate it, Thank you! X3)