Help me out please I need to find this out quick

Answer: A.

Explanation:

took the test just now

A battery supplies electrical energy to a circuit Chemical reactions in a battery cause positively and negatively charged particles to separate and become concentrated at the battery terminals. The correct option is A.

A chemical reaction is a process in which one or more substances, also known as reactants are converted to one or more different substances, known as products. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

Chemical reactions in a battery cause positively and negatively charged particles to separate and become concentrated at the battery terminals resulting in the transformation into electrical energy therefore the correct option is A.

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Answer:

The answer is d =10^6.43 Mpc

Explanation:

Solution

To calculate the absolute magnitude of the star, we apply or use the relation with the period

Mv = - [ 2.76 (log₁₀ (P) - 1.0)] -4.16

Here P =+ 0.5 days

Mv = - 0.569

To calculate m, we have the following relation given below:

Mₓ = - 2.5 Log₁₀ (Fₓ/Fₓ,0)

Fₓ,0 = 1 w/m² (This is assumed)

Fₓ = 2.3 * 10^-11 W/m^2 (Given)

Thus

Mₓ = - 2.5 Log₁₀ (2.3 * 10^ ⁻11

Mₓ = 26.595

Now, applying the formula we have the following given below:

d = ₁₀ ( Mₓ -Mv + 5)/5

d =₁₀ (26.595 - 0.569 +5)/5

d =10^6.43 Mpc

Answer:

is it pulley

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Answer:

108N

Explanation:

According to the question ,

And we need to find the force which is required to accelerate a 54kg body at 2m/s² . As we know that ,

\(\sf\red{\longrightarrow}\) Force = mass × acceleration

Substituting the respective values, we have,

\(\sf\red{\longrightarrow}\) Force = 54kg × 2m/s²

\(\sf\red{\longrightarrow}\) Force = 108 kg m/s²

\(\sf\red{\longrightarrow}\) Force = 108N

Answer:

b: density decreases

e: volume increases

Explanation:

When the water changes to ice, there won't be a loss of water, so the mass will be the same. However the ice will occupy more space, so the volume will increase. Then, since density is the mass divided by the volume, if the volume increase and the mass stays the same, the density decreases.

So, the answers are:

b: density decreases

e: volume increases

The phenomenon of wind blowing across suspended power lines causing them to vibrate at their natural frequency and producing audible sound waves is commonly referred to as an aeolian harp.

When wind flows across a power line, it sets up alternating areas of high and low pressure on either side of the line. These pressure differences can cause the line to vibrate back and forth, much like a guitar string being plucked. If the frequency of the wind-induced vibration matches the natural frequency of the power line, resonance can occur, resulting in a sustained and amplified sound wave.

The sound produced by an aeolian harp can vary in pitch and volume depending on the wind speed and direction, the size and shape of the power line, and other environmental factors. In some cases, the sound can be loud enough to be heard from a significant distance away, leading to complaints from nearby residents.

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Answer:

There are four basic states of matter

Answer:

d. Is indicated when a magnetometer measures intervals of magnetism that are weaker than expected

Explanation:

Magnetic field intensity is measured with a magnetometer on the surface of the Earth. Areas in which the magnetic field strength is lower or more than average are known as areas with magnetic anomalies, which may be due to  the presence of rocks that have a different magnetic characteristics

Where the magnetic anomaly is negative, it is indicative of a magnetic field strength reading that is lower than average magnetic field which is generally obtainable

Therefore, the correct option is indicated when a magnetometer measures intervals of magnetism that are weaker than expected

Electrical energy can be described as the energy transferred through the movement of charges, typically in the form of an electric current

define  Electrical energy  ?

Electrical energy is a form of energy that results from the movement of electric charges, typically in the form of an electric current. It is the energy that is transferred or converted from electric potential energy, which is the energy stored in a system due to the separation of charges. Electrical energy can be harnessed and used for various purposes, such as lighting, heating, powering electronic devices, and driving motors. It is an essential form of energy in modern society and plays a crucial role in many aspects of daily life.

The correct answer is 1. Electrical energy can be described as the energy transferred through the movement of charges, typically in the form of an electric current. Options 2, 3, and 4 refer to other forms of energy related to electricity but do not fully describe electrical energy itself.

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In the Van de, Graaff generator is a rubber belt stretched over two pulleys. At the bottom is the drive pulley connected to the motor. In the generator above the drive, the pulley is covered with felt and the top pulley is bare plastic.

Van de Graaff Generators are devices used to generate large amounts of static electricity. Static electricity is created by an extra charge stored somewhere to keep things from moving. Fees generally don't like to accumulate in one place. They seek out opposite charges as partners and like to run away from particles with the same charge.

When switched on the dome of the Van de Graaff generator is charged positively or negatively depending on the design. Anything that touches the dome receives the same charge. When a person has a dome, it is charged and can stand on end if the hair is long and dry enough. Most Van de Graaff generators store a positive charge in the dome by separating the negative charge from the positive charge.

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Answer:

The correct option is;

2. Some of the laws that govern nature cannot be detected by scientists

Explanation:

The statement "some of the laws that govern nature cannot be detected by scientists" is a scientific claim because of the concept of the laws or the theories truth or realism

The art word 'scientific realism' refers to the world that cannot be observed with our natural given senses without an aid.

Ontic realism refers to the statement that the world that cannot be observed are independent from the entities that are in possession of minds, ideas, language conception

Therefore, according to the ontic realist consider the world  to be made of unobservable structures and units that exist independent of the man.

In our bobsleds, the bobsled's potential energy on the ramp was converted into kinetic energy as it descended the ramp, and then thermal energy as friction as it came to a stop.

The term "potential energy" describes the energy that is held within an object due to the object's position, state, and arrangement. It is one of the two essential types of energy; the other is energy. The object's position, status, or configuration changes, releasing the stored energy.

Due to its position, an object might accumulate energy. If a demolition machine's heavy ball is held in an elevated position, for instance, it can store energy. Potential energy is the name for this kinetic energy that is held in a position. As a result of its location, a drawn bow can also store energy.

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Therefore, the energy stored in the capacitor is 2.95 × 10⁻¹¹ joules (J).

The separation between the plates of a capacitor is increased to 4.40 mm. How much energy is stored in the capacitor now?

A capacitor is an electrical device that stores electric charges. The energy stored in a capacitor can be determined by the formula

E = (1/2) × C × V²

where E is the energy stored, C is the capacitance, and V is the voltage across the capacitor.

Let us assume that the capacitance of the capacitor in question remains constant as its separation is increased.

Therefore, the voltage across the capacitor will decrease due to the increase in separation between its plates, as shown by the formula

V = Q/C

where V is the voltage, Q is the charge on the capacitor, and C is the capacitance.

The amount of charge on the capacitor remains constant, since no external factors affect the charge on the capacitor.

Thus, the decrease in voltage across the capacitor can be calculated using the formula

V₁/V₂ = d₂/d₁

where V₁ is the initial voltage, V₂ is the final voltage, d₁ is the initial separation, and d₂ is the final separation.

Therefore,

V₂ = V₁ × d₂/d₁

Substituting the values of V₁, d₁, and d₂, we get

V₂ = (1.5 × 10⁻⁶ C)/(8.85 × 10⁻¹² F × 3.2 mm) × 4.4 mm

V2 = 0.777 V

Therefore, the energy stored in the capacitor can be calculated using the formula

E = (1/2) × C × V²

Substituting the values of C and V, we get

E = (1/2) × 8.85 × 10⁻¹² F × (0.777 V)²

E = 2.95 × 10⁻¹¹ J

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The gravitational force does change believe it or not, but the explaination for this is because the earths orbit is an oval (or a not circle) the closer it nears its self to the sun.

For the two particles to circulate in the same orbit as the proton in the given nuclear experiment, they must have the same kinetic energy as the proton, which is 1.3 MeV.

The kinetic energy of a charged particle moving in a magnetic field can be expressed as: K = qB²r² / (2m). Where:

K = Kinetic energy

q = Charge of the particle

B = Magnetic field strength

r = Radius of the circular path

m = Mass of the particle, Since the magnetic field, radius, and mass of the particles are not provided, we can assume that the particles have the same charge as the proton (q) and are moving in the same magnetic field (B) and radius (r) as the proton. Therefore, for the particles to circulate in the same orbit, they must have the same kinetic energy of 1.3 MeV as the proton in the experiment.

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A trough on a transverse wave is to a rarefaction in a longitudinal wave.
In a transverse wave, the particles move perpendicular to the direction of the wave's motion. A crest is the highest point of the wave, while a trough is the lowest point.
In a longitudinal wave, the particles move parallel to the direction of the wave's motion. A compression is a region where particles are closely packed together, and a rarefaction is a region where particles are more spread out.
When comparing the two types of waves, a crest in a transverse wave corresponds to a compression in a longitudinal wave due to the increased particle density at that point.
Similarly, a trough in a transverse wave corresponds to a rarefaction in a longitudinal wave since the particles are less densely packed at that point.

So, the correct answer is B) a rarefaction.

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To determine the greatest distance you can be from the base camp at the end of the third displacement, regardless of direction, we need more specific information about the magnitudes and directions of the displacements.

Displacement is a vector quantity that has both magnitude and direction. The distance covered during multiple displacements depends on the individual magnitudes and directions of each displacement. Without specific values, it is not possible to determine the exact greatest distance from the base camp.

If you provide the magnitudes and directions of the three displacements, I can help you calculate the total distance and determine the maximum possible distance from the base camp at the end of the third displacement.

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Answer:

To find the slope, we need to have co-ordinates of atleast 2 points lying on the line.

In this case, the 2 points are

(-3,1) and (2,-2)

To find the gradient we put in the following rule :

Rise / Run = (y2 - y1) / (x2-x1) = (-2-1) / (2+3) = -3 /5

Explanation:

Answer:

20m

Explanation:

Using the equation s=d/t and re arranging it to solve for distance, d=St, where d=distance, s=speed, ant t=time, we can plug in known variables.

d=4*5

d=20m

there is a distance of 20m traveled

The horizontal distance traveled by the rock is 20 m

For horizontal motion, we use the formula below

⇒ Formula

s = vt.................... equation 1

⇒ Where

From the question,

⇒ Given:

⇒ Substitute these values into equation 1

Hence, The horizontal distance traveled by the rock is 20 m

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The spring has 3.7 J energy when a force of 37. N act on it.

Energy is the ability or the capacity to perform work.

To calculate the energy of the spring, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the spring has 3.7 J energy.

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Answer:

\(\boxed{\text{\sf \Large 50 N}}\)

Explanation:

Sum of the vertical forces is zero

F₁ + F₂ - Z = 0

Z is negative since Z acts in the opposite direction from F₁ and F₂

30 + 20 - Z = 0

Z = 50

A charge of approximately 3.34 x 10⁻⁹ Coulombs is needed to generate an electric field of 30 N/C at a point 10 m away from the charge.

The electric field (E) generated by a point charge (Q) at a distance (r) from the charge is given by Coulomb's law: E = k * Q / r², where k is Coulomb's constant (approximately equal to 8.99 x 10⁻⁹ N m²/C²).

An electric field is a field that surrounds a charged particle or a collection of charged particles and can affect other charged particles in the vicinity. It is a vector field that represents the force that would be exerted on a test charge placed in that field.

The strength of the electric field at a particular point is defined as the force per unit charge at that point.

To find the charge needed to generate a field of 30 N/C at a distance of 10 m, we can set the equation equal to 30 N/C and solve for Q:

30 N/C = k * Q / (10 m)²

Multiplying both sides by (10 m)², we get:

300 N m²/C = k * Q

Dividing both sides by k, we find:

Q = 300 N m²/C / (8.99 x 10⁹ N m²/C²) = 3.34 x 10⁻⁹ C

Therefore, a charge of approximately 3.34 x 10⁻⁹ Coulombs is needed to generate an electric field of 30 N/C at a point 10 m away from the charge.

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Answer:

Attention

Explanation:

Hello there, fellow peer! The answer to question is attention. Let's say someone is the control. The behavioral expression is an element of expression, so the control will feel emotions. Subjective Experience is when someone felt the way you feel and they are trying to help you. That is a type of emotion which can lead to empathy for you. This is also not the answer. Physiological Arousal is also not the answer because this is when you can feel what someone else is feeling and you try to give them therapy.

Using the process of elimination, our answer is therefore attention.

Answer:

It happens due to force of friction

Explanation:

If a body is performing a uniform motion and no external unbalanced force appears to apply on it, then  the body will come to rest after certain time. The reason behind this is the force of friction that is applied in opposite direction of the motion. So, when there is no apparent unbalanced force it means that the only force acting on the body is the force of friction. This force of friction tends to stop the motion after some period of time, because it is acting in the direction opposite to that of motion.

Hence, the reason behind a body undergoing uniform motion eventually stops is Force of Friction.

Answer:

The gravitational field of the Sun on Earth is greater than the gravitational field of the Sun on Neptune.

Explanation:

From Newton's law of universal gravitation,

F = \(\frac{GMm}{R^{2} }\) ............. 1

where F is the force, G is the gravitational constant, M is the mass of the bigger object, m is the mass of the smaller object and R is the distance between their centers.

Also, Newton's second law of motion state;

F = mg ................ 2

where F is the force, m is the mass and g is the gravitational force.

Equating 1 and 2,

mg = \(\frac{GMm}{R^{2} }\)

⇒ g = \(\frac{GM}{R^{2} }\)

Given that the distance between the Sun and Earth is 1.5 x \(10^{11}\) m, then the gravitational field of the Sun on Earth,

gSE = \(\frac{GM}{(1.5*10^{11}) ^{2} }\)

       = \(\frac{GM}{2.25*10^{22} }\) .................. 3

Given that the distance between the Sun and Neptune is 4.5 x \(10^{12}\) m, then the gravitational field of the Sun on Neptune,

gSN = \(\frac{GM}{(4.5*10^{12}) ^{2} }\)

        = \(\frac{GM}{2.025*10^{25} }\) ............. 4

Comparing equations 3 and 4, it can be observed that gSE > gSN.

The gravitational field of the Sun on Earth is greater than the gravitational field of the Sun on Neptune.

The angle the string makes with the vertical is : 34.6°

Given data :

mass of rubber stopper ( m ) = 45 g

Radius ( r ) = 2.9 m

Time to complete one revolution ( T ) = 4.1 secs

applying the formula below

Tan ∅ = \(\frac{mw^2r}{mg}\) --- ( 1 )

cancel out m from equation ( 1  )

Tan ∅ = \(\frac{w^2r}{g}\)    ----- ( 2 )

where ; w = \(\frac{2\pi }{T}\)  

Therefore equation ( 2 ) becomes

Tan ∅ = \(\frac{4\pi ^2r}{T^2g}\)   --- ( 3 )

where ; r = 2.9 m, T = 4.1 secs , g = 9.8

Insert values into equation ( 3 )

Tan ∅ = 0.69

      ∅ = Tan ( 0.69 )

         = 34.6°

Hence we can conclude that The angle the string makes with the vertical is : 34.6°.

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To explain the tangent plane to the surface, `z = 53 − x² − 2y²` at the point `(3, 2, 6)`, let us first determine the partial derivatives of `z` with respect to `x` and `y`.

Partial derivative of `z` with respect to `x`, `∂z/∂x = -2x`Partial derivative of `z` with respect to `y`, `∂z/∂y = -4y`Now, let's find the gradient vector `grad z` at `(3, 2, 6)` and the value of `z` at `(3, 2)`.gradient vector `grad z = (-2x, -4y, 1)`gradient vector `grad z = (-6, -8, 1)` at `(3, 2, 6)`.Value of `z` at `(3, 2)` is given by `z = 53 - 3² - 2(2)² = 39`.

Therefore, the equation of the tangent plane to the surface `

z = 53 − x² − 2y²` at `(3, 2, 6)` is:

`z - 6 = -6(x - 3) - 8(y - 2)`

which can be written as:`6x + 8y + z = 50`Thus, the equation of the tangent plane to the surface `z = 53 − x² − 2y²` at the point `(3, 2, 6)` is `6x + 8y + z = 50`.

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Answer:0.098

Explanation: