Need help as fast as possible please
I will mark BRAINLIST only for correct answers babes :)
Thank you!

Answer:

the correct answer is :

heat produced = I^2RT

Answer:

A. Conservation of energy.

Explanation:

Kirchhoff's loop rule is an example of conservation of energy.

B.Electrcity

Explanation:

invlove attraction and repulsion between charges particles

Explanation:

maybe both

hope it helps

Answer:

B

Explanation:

Trust me

Wavelength is the only one that CAN be.

A, B, or D can't be.

Answer:

It will become one third of its original value

Explanation:

Answer:

i would use the grapefruit and throw it into the water 1 by 1 one leaving sometime in between to see the sharks reaction to it. If they get attracted to it i would throw 1 in then use the bucket to push foward as fast as i can with all of my strength so i can get an equal and opposite reaction from the water to push me foward, i would keep this up for as long as i can. The size of the bucket and the amount of grapefruit were never specified so i would use this for my benefit to say its enough to get to shore

Explanation:

Answer:

8.9 g/cm^3

Explanation:

density = mass/volume

volume = length * width * height

volume = (8.4 cm)(5.5 cm)(4.6 cm)

volume = 212.52 cm^3

mass = 1896 g

density = (1896 g)/(212.52 cm^3)

density = 8.9 g/cm^3

Answer:

wavelength= 5.35×10cm=0.535m

f= 16000hz

v= wavelength × f= 0.535×16000=8560m/sec

Answer:B

Explanation:

Answer:

The answer is B

Explanation:

Answer:

In chemistry and atomic physics, an electron shell may be thought of as an orbit followed by electrons around an atom's nucleus. The closest shell to the nucleus is called the "1 shell", followed by the "2 shell", then the "3 shell", and so on farther and farther from the nucleus.

Explanation:

Answer:

An electron shell is the outside part of an atom around the atomic nucleus. It is a group of atomic orbitals with the same value of the principal quantum number n

Explanation:

Answer:

Molecules are more spread apart in gasses than in solids.

Explanation:

In gasses, molecules are free to move around in their given space, allowing them to spread more.

Gases are less dense than solids because their volume is comparatively more than solids.

Answer:

Answer:answer is C

is the magnetic field

Answer:

Our Solar System consists of our star, the Sun, and its orbiting planets (including Earth), along with numerous moons, asteroids, comet material, rocks, and dust. Our Sun is just one star among the hundreds of billions of stars in our Milky Way Galaxy. The universe is all of the galaxies – billions of them!

Answer:

Our Solar system has a our sun and many other planets that you are familar with such as mars, jupiter, venus.  A galaxy is broad term meaning it any gravitionaly bound system with stars, planets, dust, dark matter, etc.

Explanation:

Pretty much a solar sytem consits of "our" planets like jupiter, mars, earth, etc. A Galxy is just a part of space that is not spefic to us.

:)

Answer:

thanks

Explanation:

willow ptarmigan

Answer: C. The needle is aligned with the magnetic field from the coil.

The best explanation for the position of the compass needle in the investigation is "The needle is aligned with the magnetic field from the coil." The correct option is C.

A magnetic field is a region in space where a magnetic force can be detected. It is created by moving charges, such as electrons in a current or the motion of the Earth's molten core. The strength and direction of the magnetic field depend on the properties of the magnetic source and can be visualized using magnetic field lines. The magnetic field plays a fundamental role in electromagnetism and has important practical applications in a wide range of devices, from electric motors and generators to MRI machines and particle accelerators.

Here in the Question,

The strength of an electromagnet depends on the strength of the magnetic field produced by the current flowing through the coil. As the current flows through the coil, it generates a magnetic field around it, which causes the compass needle to align with the field lines. The direction of the magnetic field around the coil depends on the direction of the current flowing through it, and the compass needle aligns itself with the magnetic field lines produced by the coil.

Option (a) The needle is aligned with the coil is not a correct explanation because the compass needle is not aligned with the physical coil itself but with the magnetic field generated by the coil.

Option (b) The needle is aligned with the electrical field from the battery is not a correct explanation because the electrical field produced by the battery does not affect the position of the compass needle. The electrical field is used to create a current in the coil, which produces a magnetic field that the compass needle aligns with.

Option (d) None of the above is not a correct explanation because the compass needle is indeed aligned with the magnetic field produced by the coil.

Therefore, the best explanation for the position of the compass needle is that it is aligned with the magnetic field from the coil.

To learn more about Faraday's law click:

https://brainly.com/question/1640558

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Answer:

see below

Explanation:

frequency of a wave is the number of complete waves produced per second

so 70 Hz

means, that 70 complete waves are produced in one second,

hope this helps

Answer:

Energy stored, E = 5929 J

Explanation:

Given that,

The mass of a test dummy, m = 55 kg

It is launched 11 m into the air.

We need to find the energy stored in the bungee cords. It can be calculated as follows :

[tex]E=mgh\\\\E=55\times 9.8\times 11\\\\E=5929\ J[/tex]

So, 5929 J of energy is stored in the bungee cords.

it may help you have a great day

Answer:

2.77 * 10^5 m/s

Explanation:

Let us recall that kinetic energy is given by 1/2 mv^2

Where;

m = mass of the body

v = velocity of the body

In this case,

m = 3.38 * 10^31 kg

KE= 1.30 * 10^42 J

KE = 1/2 mv^2

v = √2KE/m

v = √2 * 1.30 * 10^42/3.38 * 10^31

v = √7.69 * 10^10

v = 2.77 * 10^5 m/s

Answer:

Mass of the truck is [tex]1154[/tex] Kg

Explanation:

As we know that

Force is the product of mass and acceleration.

F = m * a

Here acceleration, a [tex]= 39[/tex]  m/s^2

Force, F [tex]= 45000[/tex] Newton

Mass = [tex]\frac{F}{a}[/tex]

Mass

[tex]= \frac{45000}{39} \\= 1154[/tex] Kg

Answer:

[tex]\boxed {\boxed {\sf 133,500 \ Joules}}[/tex]

Explanation:

Since we are given the specific heat, mass, and change in temperature, we should use this formula for heat energy.

[tex]q=mc \Delta T[/tex]

The mass is 2 kilograms. Iron's specific heat is 445 Joules per kilogram degree Celsius. The temperature increases by 150 degrees Celsius.

[tex]m= 2 \ kg \\c= 445 \ J/kg \textdegree C\\\Delta T= 150 \textdegree C[/tex]

Substitute the values into the formula.

[tex]q= (2 \ kg)( 445 \ J/kg \textdegree C)(150 \textdegree C)[/tex]

Multiply the first two numbers. The kilograms will cancel.

[tex]q= 890 \ J/\textdegree C (150 \textdegree C)[/tex]

Multiply again. This time the degrees Celsius cancel.

[tex]q= 133, 500 \ J[/tex]

The pan absorbs 133,500 Joules of heat energy.

Answer:

Fluid theories of electricity are outdated theories that postulated one or more electrical fluids which were thought to be responsible for many electrical phenomena in the history of electromagnetism.

I hope it's helpful!

Answer:

x = 3.6 10⁷ m

Explanation:

The speed of an electromagnetic wave is constant, in a vacuum its value is    c = 3 10⁸ m / s, this speed decreases when entering a material medium,

         v = c / n

where n is the refractive index, but in this case the refractive index of air is n = 1.00002. The refractive index of a vacuum is n = 1, so we can assume that the change in velocity is negligible.

For the calculation we can use the relations of the uniform motion

        v = x / t

        x = v t

let's calculate

        x = 3 10⁸ 0.12

        x = 3.6 10⁷ m

Answer:

Respect is a feeling of admiration for someone or something elicited by their abilities, qualities or achievements.

Explanation:

the I'm pact force of 0.5 is lol u guys go and study why r u asking answers

Answer:

Concave mirror

Explanation:

Because as we move the object far away from the mirror, the image gets inverted.

Answer:

Concave mirror

Explanation:

Answer:

b

Explanation:

Vector, in physics, a quantity that has both magnitude and direction.

Answer:

a for the first one b for the second

Answer:

options?!?

Explanation:

give us some options