In the following diagram, the voltage is 1.5 volts and the resistance is 7.5 ohms. Use Ohm's law to determine the current in the circuit.



11.3 amps
5.0 amps
6.0 amps
0.2 amps

Answer:

correct order of work done is given as

2 > 3 > 4 > 1

Explanation:

When positive charge is dragged opposite to electric field then in that case work done is positive while if negative charge is dragged opposite to electric field then the work done is negative

So here we will have

positive work for charge 2, 3 and 4 while for negative charge particle 1 the work done is negative

now here we also know that work done is product of force and displacement

so here work depends on displacement of charge particle

maximum displacement is force particle 2

minimum is for particle 4

so correct order of work done is given as

2 > 3 > 4 > 1

Answer:

2, 3, 4, 1

Explanation:

on edg

Based on the information in the question, a light year is the distance traveled light in one year. Then if the light from the star Centauri takes 4.2 years to reach the earth, then its distance from earth is 4.2 light years.

Answer:

The correct choice is

A. 4.2 light years

Explanation:

v = speed of light = 300,000 km/s

t = time taken for the light to travel from Proxima centauri to earth = 4.2 years

d = distance traveled by light in 1 year = 1 light year

So

distance in 1 year = 1 light year

distance in 4.2 year = 4.2 light year

Hence

distance of star Proxima Centauri from earth = 4.2 light year

Because like poles repel and unlike poles attract. This is a property of every magnet.

Final answer:

Magnets have both north and south poles, which cannot be separated; like poles repel each other, preventing north poles or south poles from meeting. Cutting a magnet results in new pairs of poles, as they always occur in pairs.

Explanation:

Every magnet has two types of poles, a north pole and a south pole. These poles always come in pairs and cannot be separated; they exhibit a fundamental property of magnets. The reason a north pole does not meet another north pole, or a south pole another south pole, is due to the magnetic fields that they generate. Like poles will always repel each other, which means the north pole of one magnet will repel the north pole of another magnet, and the same goes for two south poles.

When a magnet is cut, even into very small fragments, each piece will retain a north and a south pole. It is impossible to isolate a north pole or a south pole on its own, which is a basic principle of magnetism. Therefore, regardless of how much you divide a magnet, you will never end up with a single pole; new pairs of poles will emerge in each fragment. This inherent characteristic is verified by experiments and is even observable on the atomic level with elements that exhibit magnetic properties, such as iron.

What does "which" mean ?  Does it mean to pick the right one out of a list that you're hiding from us ?

There's no way we can begin to make a choice if we don't know WHAT the samples are samples OF.

I CAN give you some info, however, that will probably help you make the right choice from the hidden list that you have.

If water is on the list, then that's the answer, EXCEPT if liquid ammonia is on the list.  Liquid ammonia is the only known substance on Earth that beats water as the answer to this question.

If neither liquid ammonia NOR water is on your secret list of samples, then you're on your own, Bunky.

Answer: if you are on usa test prep the answer is aluminum

Explanation:

Answer

B. X

A plate of glass or metal ruled with very close parallel lines, producing a spectrum by diffraction and interference of light.

diffraction grating is an optical component that splits and diffracts light into several beams travelling in different directions. The light emerges with its colours separated.

Answer:

X

Explanation:

I just answered this question on my quiz

Answer:

The windowpanes are- transparent.

The color of the panes are due to the wavelengths of light that the glass- allows to pass through

Explanation:

Just answered the question.

Answer:

The two answers are:

Explanation:

1) transparent

2) allows to pass through

I also just did this question. No lie. I hope this helps!

- sincerelynini

Gamma rays have extremely shorter wavelengths than microwaves and therefore have higher frequencies.

Gamma rays have a higher frequency than microwaves. In the electromagnetic spectrum, the frequency and energy increase from radio waves to gamma rays. Gamma rays are the most energetic, and microwaves are on the lower energy end of the spectrum.

Gamma rays have a higher frequency than microwaves. In the electromagnetic spectrum, frequency and energy increase from radio waves to gamma rays, making gamma rays the most energetic form of electromagnetic waves. Simply put, gamma rays' frequency is higher and their wavelength is shorter than microwaves.

Microwaves are on the lower energy end of the spectrum, used in applications such as cooking and telecommunications. They have a frequency ranging from about 10⁹ Hz to 10¹² Hz.

Shortly, gamma rays are nuclear in origin and encompass the highest-frequency electromagnetic radiation of any type, meaning they have a higher frequency than microwaves.

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c the objects particles move faster

Answer: c.The object’s particles move faster

Explanation:

When the temperature of an object increases, the particles of that object gain kinetic energy and move faster.

Kinetic energy is related to motion. If an object has multiple particles, as faster they move, they will collision with each other.

So, the speed of the particles is related to the temperature. (And also the mass of the particle)

The true statement is that mixtures are classified based on the distribution of particles in them. Mixtures are a combination of two or more pure substances that retain their individual properties. Elements and compounds, often components of a mixture, are not inherently mixtures themselves.

Among the statements given about mixtures, the true one is statement D: mixtures are classified based on the distribution of particles in them. Mixtures are a combination of two or more pure substances in which each substance keeps its own properties. They are not chemically combined. Elements and compounds can often form part of a mixture but are not, in themselves, mixtures. Elements, compounds, and mixtures each have different classifications and properties in the field of chemistry.

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do c or A I personally would do c

Formula

H = m*c*ΔT

Givens

H = 1004 J

m = 111.6

ΔT = 20 - 0

ΔT = 20

c = ?

Solution

1004 = 111.6 * c * 20          Multiply the right.

1004 = 2232*c                  Divide to get c

1004/2232 = c                  Do the division

0.4498     =   c

Specific heat of iron = 0.4498

it will weigh less on the moon.

ANY object will weigh  83% less on the Moon than weighs on Earth.

Your 10kg rock weighs  98N (22.4 lbs)  on Earth and  16N (3.6 lbs)  on the Moon.

the answer is 46 because the year is 2047 and you was eighteen in 2019 so you was born in 2001

To calculate the age after 28 years from getting married at age 18 in 2019, you add 28 to 18, resulting in an age of 46 years.

If someone gets married at the age of 18 in the year 2019, to calculate their age after 28 years have passed, you simply add 28 to their age at marriage. Here's the step-by-step calculation:

Therefore, after 28 years have passed since getting married in 2019, the person would be 46 years old.

An electric current produces a magnetic field because of the motion of charged particles. While the original question suggests moving protons, it is actually the movement of electrons in the current that generates the magnetic field. This process is closely related to the principle of induction, where changing magnetic fields induce electric currents in conductors.

An electric current produces a magnetic field due to the magnetic field from the moving charges in the current. When electric charges are in motion, such as when electrons flow through a conductor, they generate a magnetic field around them. This is a fundamental principle of electromagnetism, informed by Oersted's discovery and formalized by the works of Faraday and Henry. The key underlying concept relating to the production of magnetic fields by electric currents is the motion of charged particles, which in most cases are electrons.

To address the original question: An electric current produces a magnetic field because of B.) The Moving Protons. However, this is a misleading choice as it is actually the electrons that move in a conductor, not protons. A more accurate statement would be the movement of charged particles—typically electrons in circuits—produces a magnetic field.

One can induce a magnetic field through the interaction of magnets with conductors, a process known as induction. For example, moving a bar magnet through a wire loop (as stated in the provided information), known as motional emf, will induce an electric current in the wire loop due to the changing magnetic flux.

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The horizontal motion has no effect on the vertical drop.

From a drop, the distance the ball falls in 'T' seconds is

D = 4.9 T^2

so

2.2 = 4.9 T^2

T^2 = 2.2/4.9

T^2 = 0.449 sec^2

T = 0.67 second

We have that A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65m/s off a cliff. Assuming no air resistance will take t to reach the ground

t=0.670sec

From the question we are told that

A ball is thrown horizontally at a height of 2.2 meters

a velocity of 65m/s off a cliff

Generally the equation for the Time is mathematically given as

s=ut+1/2gt^2

Therefore

[tex]2.2=0t+1/2(9.8)t^2\\\\t=\sqrt{\frac{2.2}{0.5*9.8}}\\\\t=0.670sec[/tex]

Therefore

A ball is thrown horizontally at a height of 2.2 meters at a velocity of 65m/s off a cliff. Assuming no air resistance will take t to reach the ground

t=0.670sec

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Final answer:

Climate change is primarily driven by the emission of greenhouse gases like carbon dioxide and methane, mainly from the burning of fossil fuels, deforestation, agriculture, and manufacturing. Human-caused factors are the most significant contributors to the current rates of global warming, surpassing natural influences on the climate.

Explanation:

One significant factor contributing to climate change is the emission of greenhouse gases such as carbon dioxide (CO2) and methane. The largest driver of warming comes from burning fossil fuels like coal, oil, and natural gas, which is the main source of CO2 emissions. This is further compounded by deforestation, agriculture, and manufacturing. Other manmade causes include increases in near-surface ozone from internal combustion engines, and aerosols such as carbon black and dust, which impact the Earth's albedo and its ability to reflect solar radiation.

It is essential to distinguish between natural factors that have historically influenced climate, such as changes in Earth's orbital patterns, plate tectonics, solar output, and volcanic activity, versus the anthropogenic (human-caused) factors driving the current unprecedented rates of climate change. Human-related factors far outweigh natural influences, which cannot fully explain the rapid increase in global temperatures observed today. The use of fossil fuels for energy and transportation is identified as the critical factor in fueling the current trend of climate change, contributing directly to the greenhouse effect.

Efforts to reduce emissions, transition to renewable energy sources, and implement more sustainable practices are vital steps in addressing the ongoing climate crisis. This reflects a dire need for coordinated global action to mitigate the impacts on food supply, water resources, ecosystems, and human health.

Answer:

B. 14

Explanation:

For an element:

- Atomic number: is the number of protons in the nucleus (p)

- Mass number: it is the number of protons (p) + neutrons (n) in the nucleus

For Al (aluminium), we have:

p = 13

p + n = 27

Substituting the first equation into the second one, we find the number of neutrons:

n = 27 - p = 27 - 13 = 14

Answer:

14

Explanation:

plato

"If a ray of light passes across the boundary from a material in which it travels slowly into a material in which travels faster, then the light ray will bend away from the normal line."

I hope this helps, it bends away from the normal

Velocity = (displacement) / (time)

Displacement = straight-line distance between start-point and end-point

If you stop at the same point you started from, then your displacement for the trip is zero.

The answer is A

Velocity = (displacement) / (time)

Displacement = straight-line distance between start-point and end-point

If you stop at the same point you started from, then

your displacement for the trip is zero, and your average

velocity is also zero.

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Answer:

A) Alpha particle

Explanation:

An alpha particle is identical to a helium nucleus, since consists of 2 protons and 2 neutrons.

The charge of an alpha particle is +2e and its mass is 4 a.m.u.

Alpha particles are produced in alpha decays. Alpha decays occur when a nucleus emits an alpha particle: as a result, the atomic number of the nucleus decreases by 2 units, while its mass number decays by 4 units.

The equation that represents an alpha decay is

[tex]_Z^AX \rightarrow _{Z-2}^{A-4}Y+_2^4 \alpha[/tex]

The direction of the acceleration is the same as the direction of the net force: 34 degrees. Apply the equation <eq04017> to find the magnitude of the net force, giving you 35.4 N. Use the magnitude of the force and the mass to find the magnitude of the acceleration: a = F/m = (35.4 N)/(0.10 kg) = 354 m/s2.

Answer: it’s Fnety =(FT)(Sin 32°)- Fg

Explanation:

I guessed it right

We know that acceleration due to gravity is the same for all objects. But if we drop a flower petal and a hammer from the same height, the hammer falls faster. Why does this happen?

Let me try to explain. The petal falls slower as the resistance it faces by air slows it down much more. Even though the hammer is also affected by this resistance, the speed decrease is negligible due to its weight.

To simplify, a petal is much lighter than a hammer. Even though gravity accelerates them at the same speeds, the petal slows down due to air resistance but the hammer doesn't, as its weight counteracts the air resistance.

I may be confusing at times, so please ask me if you want anything clarified :)

Hope this helps you!

How does a magnet affect another magnet, something made of iron or a similar metal, and moving charges?

It exerts a magnetic force.

~Hope this answers your question!~

Answer: The correct answer is "it exerts a magnetic force".

Explanation:

Magnet: It has magnetic properties. It has two poles: south pole and north pole.

Magnets attract the iron or other metal. It is due to the influence of their magnetic field. The atoms of the iron gets align their electrons. In this way, the iron gets magnetized.

There is a magnetic force of attraction between the opposite poles. There is a magnetic force of repulsion between the same poles.

The current carrying conductor produces the magnetic field around it.

If the compass needle is placed near the current carrying conductor then it will show the deflection. It shows the presence of the magnetic field around the current carrying conductor. It exerts a magnetic force.

Therefore, the option "It exerts a magnetic force" is a correct.

Answer

Hello,

This is a double replacement reaction.

Explanation

A double replacement reaction occurs wherein the two principle reactants exchange after reaction. In this example, Cl will combine to K to form KCl and H will add to OH to form H2O.The cations and anions switch between the reactants to produce new products.

Wish you Luck!

Neglecting losses in a transformer, it's input and output power are equal. (C)

The input power in the transformer are equal to the output power of a transformer.

Answer : Option C

Explanation:

The transformers have power on either side as input or output to be constant. This is so because the transformers are the electrical device which transfer the energy between the circuits. There are two types of transformers, step up transformers and step down transformers.

Both follows the following expression of power = voltage x current. According to the type of transformer, the turns of wire and voltage and current are kept varying but the power remains constant.

Answer: False

Explanation:

Observation is a detailed record of the data obtain after the implementation of the scientific procedure. It does not include the description of the subject as it is already mentioned in the literature review or writing theory or principle of the scientific research or experiment.

the average kinetic  energy of the particles in an object is directly proportional to its TEMPERATURE.

Answer: B

Explanation: the answer is b

Sound waves are longitudinal wave which propagates in form of compression and rarefaction through the medium

As the medium is have compression and rarefaction then we will have few positions in the medium where we have pressure maximum and few points of less pressure.

this pressure difference creates disturbance into our ear drum and this disturbance or this signal is convey to brain as sound.

The transmission of this signal is always in form of electrical signal which are carried by neurons into our brain

Answer:

A. Electrical signal waves

Explanation:

ANSWER:

the planet that is larger than earth is Saturn

~batman wife dun dun dun...aka ~serenitybella

it would be Saturn

The equatorial diameter of Saturn is 120,536 km; that's about 9.5 times bigger than the diameter of the Earth. The surface area of Saturn is 83 times the area of Earth, and the volume is 764 times the volume of Earth. In other words, you could fit 764 planets the size of Earth inside Saturn.

If you're referring to this question :

A container of soymilk has the instruction on its label to "shake well before opening." The soymilk is most likely a !suspension!

Suspension is the answer.

Hope this helps,

Davinia.