What is the net force on a crate sliding at an unchanging speed when pushed with a steady force of 75 n?

Consequently, 1.6 A and 2.0 A, respectively, are the currents flowing through the 25 ohm and 20 ohm resistors.

Parallel resistors divide the overall current, not receiving it individually. The total current flowing through all of the parallel resistors in a series determines the current entering the series.

Calculate the circuit's overall resistance first. By combining the resistances of the three resistors in series, we can achieve this:

R_total = R1 + R2 + R3

R_total = 10 ohms + 25 ohms + 20 ohms

R_total = 55 ohms

Next, we can use Ohm's Law to find the voltage across the resistor with 10 ohms:

V1 = I * R1

V1 = 4.00 A * 10 ohms

V1 = 40 V

we can use Ohm's Law to find the current through that resistor:

I2 = V2 / R2

I2 = 40 V / 25 ohms

I2 = 1.6 A

Similar to the resistor with 20 ohms, whose voltage across it is also 40 V, we can apply Ohm's Law to get its current:

I3 = V3 / R3

I3 = 40 V / 20 ohms

I3 = 2.0 A

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3/4 F applied is the strength of the applied force between the two masses. (Choice b)

Magnitude in physics is simply described as "distance or amount." It shows the size or direction that an item travels in either an absolute or relative sense. It is a way of expressing something's size or scope. Magnitude often refers to distance in physics.

A magnitude can be defined as a quantity's size in simple terms. For instance, the Richter scale's measurement of an earthquake's magnitude, which identifies the earthquake's size, typically ranges from 1 to 10. A magnitude 8 earthquake does far more damage than a magnitude 3 earthquake.

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Scientific models area unit accustomed make a case for and predict the behaviour of real objects or systems.

A system of ideas, events, or processes is described physically, mathematically, conceptually, or conceptually in an exceedingly scientific model. By victimisation their scientific experience to produce explanations that create it doable to forecast the patterns, scientists work to recognise and comprehend the patterns that exist in the environment.

Scientific model illustrations include:

a simulation of the sun, moon, and earth's motions (which you participated in last year) a way for statement eclipses. The weather will be foretold victimisation models that describe weather events.

Models will assist you in mentally imagining one thing that's difficult to ascertain or comprehend. Models will aid in scientific prediction, understanding of processes, and communication of ideas.

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When a substance changes from one type of matter into another, such as two or more substances combining to form compounds, the substance undergoes a: chemical reaction

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products.

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.

Whereas , When matter undergoes physical change, it doesn't become a different substance. Therefore, physical changes are often easy to reverse.

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Answer:

supermassive black hole.

took a quiz and this was the answer

A black hole with an estimated mass of 40 billion solar masses, S5 0014+81, is an example of a massive black hole.

The host galaxy of S5 0014+81 is a giant elliptical starburst galaxy, with the apparent magnitude of 24.

Its physical size would have a radius that's 800 times the Earth-Sun distance, or over 100 billion kilometers.

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The intensity of the approaching subway train sound is 10,000 times greater than the intensity of a normal conversation.

To determine the intensity ratio of the two sounds, we need to use the formula:
Intensity ratio = 10^(difference in decibels/10)

The difference in decibels between the approaching subway train (100 dB) and a normal conversation (60 dB) is 40 dB.

So, the intensity ratio of the two sounds would be:
Intensity ratio = 10^(40/10)
Intensity ratio = 10^4

It is important to note that decibels are a logarithmic unit of measurement, which means that each increase in 10 decibels corresponds to a 10-fold increase in sound intensity. Therefore, a 100 dB sound is not simply twice as loud as a 50 dB sound but rather 10,000 times louder. The intensity ratio formula can be used to compare different sounds and determine their relative loudness levels. In this case, the intensity ratio of the approaching subway train sound to a normal conversation is 10,000:1, which demonstrates the significant difference in sound intensity between these two scenarios.

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Answer:

It's B

Explanation:

Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants.

Stomata take in carbon and release oxygen

Chlorophyll absorbs sunlight

Answer:

B

Explanation:

because. it reduces the distance between the earth

Answer:

In general there are three sub-segments of "alternative" energy investment: solar energy, wind energy and hybrid electric vehicles

ANSWER:

0.4081%

Explanation:

Difference=24.6-24.5=0.1

Relative error = 0.1/24.5*100=0.4081%

Relative error is equal to the = difference between both the values/The true value *100

Answer:

Explanation:

Is beacuse of the air within our bodys is exerting the same pressure out wards so tjere is no pressure difference

Answer:

it is because our body itself is not  adept enough to resist the air pressure. For every reaction, there be an balanced opposite reaction according to Newton's law. namely, all forces such as air pressure are in proportion therefore we will not perceive air pressure which also means no net force.    

Explanation:

Answer:

Rectilinear Propagation

Explanation:

In the rectilinear propagation, light is described as a ray that travels in a straight path.

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Answer: 3.1

Explanation:

v=ir

so r=v/i

6.2/2=3.1 ohms

Answer :The answer is 3.1

Explanation: For this equation we solve it by dividing the voltage by the current flowing in the circuit. So the resistance formula is represented by

voltage/current.

Titanium is a non-magnetic metal because of its digital configuration and crystal shape.

In its pure shape, titanium has a hexagonal near-packed (hcp) crystal structure, this means that that its atoms are organized in a specific pattern in the crystal lattice.

This association outcomes inside the absence of unpaired electrons that could create magnetic moments, making it non-magnetic. Moreover, the electron configuration of titanium does not permit for magnetic moments to shape.

Titanium has four valence electrons, which are positioned within the 3-d and 4s orbitals.

The electrons in the 3d orbital are paired, which means that they've opposite spins and cancel out any magnetic second that could be created by means of the electrons inside the 4s orbital.

But, whilst titanium is alloyed with other metals, inclusive of iron or nickel, it may turn out to be magnetic because of the magnetic houses of these metals.

This belongings is utilized in various programs, inclusive of in the manufacturing of plane and medical implants, where the non-magnetic houses of titanium are important to keep away from interference with electromagnetic gadgets.

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Answer:

the source (plane) moves away from the observer ,     v_{s} = 38.2 m / s

Explanation:

This is an exercise in the Doppler effect, which is the change in frequency due to the relative movement of the source and the observer; in this case the observer the sound detection system that is fixed and the source (plane) is mobile, in this case the relationship that describes the process is

            \(f'= f ( \frac{v}{v \ \frac{-}{+} \ v_{s} })\)

where negative sign is for the source moving towards the observer

It indicates that the frequency of the received sound is 90% of the emitted frequency

         f '/ f = 0.90

let's substitute

           0.9 = \(\frac{v}{v \ \frac{-}{+} \ v_{s} }\)

            \(v \ \frac{-}{+} v_{s}\) = v / 0.9

The speed of sound is v = 344 m / s, let's substitute

           \(344 \ \frac{-}{+} v_{s}\) = 344 / 0.9

           344 \ \frac{-}{+} v_{s} = 382.2

Let's analyze this expression, to fulfill the equation the speed of the source must be positive, therefore the source moves away from the observer

           344 +\(v_{s}\)= 382.2

           v_{s} = 382.2 -344

           v_{s} = 38.2 m / s

Answer:

Explanation:

While pure science deals with knowledge discovery Applied science deals with knowledge use

82 E−19 s2/m3 is its ratio from the law of harmonies

Why do Mars and Jupiter share an asteroid belt?

It seems that one or more planets could have developed in the zone between Mars and Jupiter, but Jupiter's gravity kept tearing things apart. The material in this region was never able to form a single planet, only asteroid-sized particles.

The only dwarf planet in the inner solar system is Ceres, which is also the largest asteroid belt object between Mars and Jupiter. In 1801 when Giuseppe Piazzi initially noticed it, it was the first asteroid belt object to be found.

A planet's orbital period and radius are compared to those of other planets according to the Law of Harmonies. By employing the ratio T^2/R^3, various aspects of orbits are compared.

T is 7.93 E 7s

R is 2.77 E 11 m

Ratio will be 82 E−19 s2/m3

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Answer:

The earth has a circumference of about 25,000 miles so one would move 25,000 miles due to the rotation of the earth.

The earth also moves in its motion about the sun, and the sun moves about the center of the galaxy.

Considering that earth is about 92,000.000 miles from the sun then distance moved in one day about the sun is

S(about sun) 92000000 * 2 * π / 365 = 1.58E6 miles per day due to motion of earth about sun (about 1.6 million miles / day)

When examining the image of the apple on the retina, I observe that it appears smaller and inverted compared to the actual object.

The image formed on the retina is smaller and inverted due to the way light is refracted and focused by the lens of the eye. As light rays pass through the cornea and lens, they converge and intersect on the retina, forming a focused image. However, the image is smaller than the actual object because of the distance between the lens and the retina. Additionally, the inversion of the image occurs because light rays cross over each other as they pass through the lens, resulting in an inverted projection on the retina. Despite the image being smaller and inverted, our brain processes the visual information and interprets it correctly, allowing us to perceive the apple in its actual size and orientation.

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A clock will tick at two-thirds the rate of an identical clock at rest in the laboratory when it is moving at approximately 0.57 times the speed of light relative to the laboratory.

According to the theory of special relativity, time dilation occurs when an object is in motion relative to an observer. The time dilation factor, known as the Lorentz factor, is given by γ = 1/√(1 - v²/c²), where v is the relative velocity between the object and the observer, and c is the speed of light in a vacuum.

To find the velocity at which the clock ticks at two-thirds the rate, we set the Lorentz factor equal to 2/3 and solve for v. Rearranging the equation, we get v = c √(1 - (1/γ²)). Substituting γ = 2/3, we find v ≈ 0.57c, where c is the speed of light. This means that the clock needs to be moving at approximately 0.57 times the speed of light relative to the laboratory for its ticks to occur at two-thirds the rate of an identical clock at rest in the laboratory.

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Answer:

The answer is d i think so yea

Explanation:

hope u hae  a really good  day

Answer:

2ms-2

Explanation:

F = ma

a = F/m

= 0.5 / 0.25

= 2ms-2

Answer 2m/s^2

Explanation:

mass=0.25kg

Force =0.5N

Acceleration=force/ mass

Acceleration=0.5/0.25

Acceleration=2

Acceleration =2m/s^2

The switch that adjusts the magnetic field to be either nearly uniform or have a strong gradient will affect the current in the two coils differently.

When the magnetic field is nearly uniform at the center, the current in both coils will remain relatively unchanged. The uniform field will not induce any significant voltage in the coils, so the current will flow through them as usual.

However, when the magnetic field has a strong gradient, the current in the two coils will be affected differently. The rapidly changing field will induce a voltage in the coils according to Faraday's law of electromagnetic induction. This induced voltage will result in a change in the current flowing through the coils. The magnitude and direction of the induced current will depend on the specific characteristics of the coils and the magnetic field gradient.

In summary, the switch that changes the magnetic field from uniform to having a strong gradient will induce a change in the current flowing through the coils due to the induced voltage.

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Given :

A force of 150 N is exerted 22◦ north of east.

To Find :

The northward component of force .

Solution :

The angle between the force and east direction is 22° .

So , component of Force F in north direction is given by :

\(Fsin\ \theta\\\\150\times sin\ 22^o\\\\56.19\ N\)

Therefore , the component of force in northward direction is 56.19 N .

Hence , this is the required solution .

The ammeter and voltmeter should be read simultaneously to determine the resistance of a circuit component because the resistance depends on the current passing through the component and the voltage drop across it. By measuring both the current and voltage, Ohm's law (V=IR) can be applied to calculate the resistance of the component.

The resistance of a circuit component represents how much it impedes the flow of current through it. According to Ohm's law, the voltage drop across a component is directly proportional to the current flowing through it, and the constant of proportionality is the resistance of the component. Therefore, to determine the resistance of a component, we need to know both the current passing through it and the voltage drop across it.

An ammeter is used to measure the current flowing through a circuit, while a voltmeter is used to measure the voltage difference between two points in the circuit. By reading both instruments simultaneously, we can use Ohm's law to calculate the resistance of the component being measured.

It is important to note that the readings must be taken simultaneously because the current and voltage can change over time, and any delay between taking the readings can result in inaccurate measurements. Therefore, it is necessary to read the ammeter and voltmeter at the same time to obtain an accurate measurement of the resistance of the component.

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Refraction results from differences in light's speed. The correct answer is C) speed.

Refraction is the term for the bending of light as it passes through transparent materials (it also occurs with sound, water, and other waves). We are able to create lenses, magnifying glasses, prisms, and rainbows because to this bending caused by refraction.

Refraction occurs when light passes through different mediums and changes its speed. This change in speed causes the light to bend, creating the effect of refraction.

This is why objects appear to be in different positions when viewed through water or a lens. The frequency and incident angles of the light do not affect refraction, only the speed of the light does.

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The LED's conversion efficiency is the ratio of the optical power produced to the electrical power input. In this case, the LED has a conversion efficiency of 2 mW / (2 V * 100 mA) = 0.02, or 2%.

This means that 2% of the electrical power applied to the LED is converted into optical power, while the rest is lost as heat. This conversion efficiency is a measure of how effectively the LED converts electrical energy into light. To improve the LED's efficiency, engineers may work to reduce the amount of electrical energy lost as heat, or to increase the amount of electrical energy that is converted into light.

The LED's conversion efficiency is the ratio of the optical power produced to the electrical power input. In this case, the LED has a conversion efficiency of 2 mW / (2 V * 100 mA) = 0.02, or 2%.

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ANSWER

EXPLANATION

We want to find the angle of reflection of the ray of light.

According to the law of reflection, the angle of reflection must be equal to the angle of incidence of a ray of light:

Therefore, the angle of reflection of the ray of light is:

That is the answer.

\(\\ \sf\Rrightarrow kE=\dfrac{1}{2}mv^2\)

\(\\ \sf\Rrightarrow 14=\dfrac{1}{2}17v^2\)

\(\\ \sf\Rrightarrow 17v^2=28\)

\(\\ \sf\Rrightarrow v^2=28/17\)

\(\\ \sf\Rrightarrow v^2=1.64\)

\(\\ \sf\Rrightarrow v\approx 0.13m/s\)