A boy moves around a square path of side 15m. He completes 1 round in 40 sec. 1 Calculate the displacement of the boy at the end of 2min 20sec.





Plsss answer fast!

The closest answer among the options given is 3.9 x 105 J. . An object can accelerate by increasing its speed, changing its direction, or both.

What is Acceleration?
Acceleration is the rate of change of velocity of an object over time. It is a vector quantity, meaning it has both magnitude and direction, and is expressed in units of meters per second squared (m/s^2) or feet per second squared (ft/s^2)

The work done to accelerate the car can be calculated using the kinetic energy formula:

K = 1/2 mv^2

Substituting the given values, we get:

K = 1/2 (1600 kg) (22 m/s)^2

K = 677,600 J

Therefore, the work done to accelerate the car to this speed is 677,600 J.

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During the process of labor, the cervix needs to dilate. The cervix is the lower part of the uterus that connects to the vagina. It is typically closed and firm, but as labor progresses, it undergoes dilation, which means it opens up to allow the passage of the baby through the birth canal.

The cervix dilation is measured in centimeters or inches to track the progress of labor. The goal is for the cervix to dilate to a sufficient size to allow the baby to pass through. A fully dilated cervix is typically around 10 centimeters or 4.5 inches in diameter. Dilation is one of the crucial stages of labor and is monitored by healthcare providers to determine the progress and readiness for the delivery of the baby. As the cervix dilates, it signifies that the body is preparing for the baby's passage, and it is an essential step in the process of giving birth.

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Answer:

Explanation:hffdghbjhhfgdvbjnjhjvcfgdfcvhjkm,kjjhgjh

Answer:

The heat necessary to warm 500g of water from 20°C to 65°C is 37,620 J.

Explanation:

GIVEN: m = 500 gm, T₂ = 65°C AND T₁  = 20°C, we know that c (specific heat capacity) = 4180

TO FIND: The heat necessary to warm 500g of water from 20°C to 65°C.

SOLUTION:

By using the heat equation,

              Q=m c ΔT  

             ΔT = T₂ - T1

             ΔT = 65 - 20 = 45°C

In this case,

Q = 0.2 × 4180 × 45 = 37,620 J

the options that are on the electromagnetic spectrum are invisible light (including UV radiation, X-rays, and gamma rays) and microwaves.

What is electromagnetic spectrum?

The electromagnetic spectrum includes all types of electromagnetic radiation, which are waves of energy that travel through space. Sound waves, on the other hand, are not on the electromagnetic spectrum because they are mechanical waves that require a medium to travel through, such as air or water.

Alpha rays, also known as alpha particles, are not on the electromagnetic spectrum either. They are actually particles that consist of two protons and two neutrons and are emitted by some radioactive materials.

Invisible light is a term that refers to electromagnetic radiation that is not visible to the human eye. This includes ultraviolet (UV) radiation, X-rays, and gamma rays, which have shorter wavelengths and higher energy than visible light.

Microwaves are on the electromagnetic spectrum and have longer wavelengths and lower energy than visible light. They are often used for communication and cooking food.

Otonal waves are not a known type of wave and are not on the electromagnetic spectrum.

In summary, the options that are on the electromagnetic spectrum are invisible light (including UV radiation, X-rays, and gamma rays) and microwaves.

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The marshmallow shrunk as a result of the increased pressure's effect on the molecules' tendency to cluster together (option b).

Between pressure and stress, there are several distinctions. Although both of these words are frequently used interchangeably. Generally speaking, the force applied per unit area can be used to quantify pressure. The amount of force applied per unit area that a material experiences is referred to as stress, on the other hand.

When we feel compelled and intimidated, we tend to react in a worried manner. It typically takes place when we are faced with a circumstance that we don't feel in control of or can manage. whenever we are under stress, such as when we are trying to balance a lot of obligations.

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Answer:

1. 75 speed, 2. 90 second = 1hr. 30 second. 3. 125 = 1hr 60 seconds 4.

It would take approximately 2.4688 × 10^17 seconds or 7.82 million years for gas to travel from the core of the galaxy to the end of the jet, assuming a constant speed of 5000 km/s.

To calculate the time it would take for gas to travel from the core of the galaxy to the end of the jet, we need to use the formula: time = distance / speed.

Given that the jet in NGC 5128 is traveling at 5000 km/s and is 40 kpc (kiloparsecs) long, we first need to convert the distance from kpc to km. 1 kpc = 3.086 × 10^16 meters, which means 1 kpc = 3.086 × 10^19 km.

Therefore, the length of the jet in kilometers is 40 x 3.086 × 10^19 km = 1.2344 × 10^21 km.

Now we can calculate the time it would take for gas to travel from the core of the galaxy to the end of the jet as follows:

time = distance / speed
time = 1.2344 × 10^21 km / 5000 km/s
time = 2.4688 × 10^17 seconds

So, it would take approximately 2.4688 × 10^17 seconds or 7.82 million years for gas to travel from the core of the galaxy to the end of the jet, assuming a constant speed of 5000 km/s.

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Answer:cross-sectional area, and thus surface area, increases the amount of air resistance an object experiences

Explanation:

Answer:

All planets have an elliptical orbit

all planets have roughly the same SHAPE of orbit

The beam of light travels in a straight line, with electromagnetic waves oscillating transversely. The speed of light is constant, and the wavelength and frequency of light waves determine its color and other properties.

The beam of light consists of electromagnetic waves traveling in a straight line. These waves oscillate perpendicular to the direction of propagation, creating a transverse wave. Light waves travel at a constant speed in a vacuum, which is approximately 299,792 kilometers per second (or about 186,282 miles per second). This speed is often denoted as "c" and is a fundamental constant in physics.Light waves exhibit characteristics such as wavelength and frequency. Wavelength refers to the distance between successive wave crests or troughs, while frequency is the number of wave cycles passing through a point in one second. The speed of light is related to its wavelength and frequency through the equation c = λν, where c represents the speed, λ is the wavelength, and ν is the frequency.

Different colors of light are characterized by their wavelengths, with shorter wavelengths corresponding to higher frequencies and vice versa. For example, red light has a longer wavelength and lower frequency compared to blue light.

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Answer:

The answer is 2 because the formula is

wavelength=speed/frequency

The angular momentum of the moon around the earth is 2.92 * \(10^{34}\) kg \(m^{2}\)/s

Angular momentum a vector quantity that is a measure of the rotational momentum of a rotating body or system, that is equal in classical physics to the product of the angular velocity of the body or system and its moment of inertia with respect to the rotation axis, and that is directed along the rotation axis.

m (mass of moon ) = 7.4 * \(10^{22}\) kg

orbit = 3.8 * \(10^{8}\) m

L = I ω

  = m \(r^{2}\)ω

  = 7.4 * \(10^{22}\)  * \((3.8 *10^{8} )^{2}\) * (2π / 27 * 24 * 3600)

  = 2.92 * \(10^{34}\) kg \(m^{2}\)/s

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(1) The moment of 20N about the wheel is 30 Nm. (2) The distance of the wheel to the center of mass of the wheelbarrow is 1.2m.

1. The moment of 20N about the wheel can be calculated using the formula:

Moment = Force x Distance

Moment = 20N x 1.5m

Moment = 30 Nm

2. To find the distance of the wheel to the center of mass of the wheelbarrow, we can use the principle of moments, which states that the sum of the clockwise moments about a point is equal to the sum of the anticlockwise moments about the same point. Let the distance from the wheel to the center of mass be x.

Clockwise moment = Weight x Distance

Clockwise moment = 80N x (1.5m - x)

Anticlockwise moment = Upforce x Distance

Anticlockwise moment = 20N x x

Using the principle of moments:

80N x (1.5m - x) = 20N x x

Simplifying and solving for x:

120m = 100x

x = 1.2m

Therefore, the distance of the wheel to the center of mass of the wheelbarrow is 1.2m.

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Equilibrium theory appeals to some sociologists because it explains social stability and order.

Equilibrium theory, also known as structural functionalism, is a sociological perspective that emphasizes the importance of social stability and order in maintaining the functioning of society. It posits that societies are composed of interrelated parts that work together to maintain a state of equilibrium. This theory appeals to some sociologists because it provides a framework for understanding how various social institutions, norms, and roles contribute to social harmony and balance.

Equilibrium theory suggests that societies have a natural tendency to maintain stability and that any disruptions or imbalances will be addressed through mechanisms of adjustment and adaptation. By studying the structures and functions of different social institutions, such as family, education, and government, sociologists can gain insights into the underlying mechanisms that promote social cohesion and order.

The appeal of equilibrium theory lies in its ability to explain how societies maintain stability and adapt to changes. It helps sociologists understand the interdependence between different parts of society and how they contribute to the overall functioning of social systems. This perspective allows for the analysis of social problems, social change, and the consequences of disruptions to social equilibrium.

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The charge on the second sphere is -9.6×10⁻⁶ C.

The force of attraction or repulsion between two charged things is directly proportional to the product of their charges and inversely proportional to the square of their distance, according to Coulomb's law.

Given, Q1 = +2.3 x 10⁻⁶ C

distance, r = 2m

attraction force, Fa = 0.05N

now by using Coulombs law,

Fa = k×Q1×Q2/r

0.05 =  9×10⁹×2.3 x 10⁻⁶ × Q2 /2

Q2 = 2×0.05/ 9×10⁹×2.3 x 10⁻⁶

Q2 = 9.6×10⁻⁶ C.

Since it is an attractive force therefore charges will be opposite,

The charge on the second sphere is -9.6×10⁻⁶ C.

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Answer: 6 km

works on odyseyware

The answer would be  is 6 km

According to Newton's third law of motion, when a body apply force to an object then the object will exert equal and opposite force to the body.

Therefore, if an astronaut pushes the satellite then the satellite will apply equal force to astronaut but in the opposite direction. As there is not any other external force acting on the astronaut she will continue to move with the constant speed in the same direction forever.

Answer:measurements: if frequency is doubled, time between flashes it cut in half

constant speed: yes because they will still be equally spaced

accelerated: no because they will not be equally space intervals

Explanation:

Answer:

The answer is...

Explanation:

If your counting the miles he went from the Pizza place and back it would be 22 if you were counting just the amount of miles he went from the pizza place then it would be D, or 11. Hope this helps.

:)

The frequency at which you would look for the n = 2 standing wave is 10 times the frequency of the fundamental frequency. In this case, the frequency would be f2 = 10 * 44.1 Hz = 441 Hz.

In a standing wave, the frequency of the wave is directly related to the number of antinodes or nodes present. The frequency of the standing wave is determined by the fundamental frequency (n = 1).

The fundamental frequency (n = 1) is given by the formula:

f1 = v / λ1

where f1 is the fundamental frequency, v is the velocity of the wave, and λ1 is the wavelength of the fundamental frequency.

In a standing wave, the distance between two adjacent antinodes (or nodes) is equal to half of the wavelength of the wave. So, for the standing wave with 10 antinodes, the wavelength is given by:

λ10 = 2L / 10

where L is the length of the medium in which the wave is traveling.

To find the frequency for the n = 2 standing wave, we need to find the wavelength of the second harmonic (n = 2). The wavelength of the second harmonic is given by:

λ2 = λ1 / 2

Substituting the value of λ1 from the first equation, we have:

λ2 = (2L / 10) / 2 = L / 10

Now, we can find the frequency of the second harmonic (n = 2) using the formula:

f2 = v / λ2

Substituting the value of λ2, we have:

f2 = v / (L / 10) = 10v / L

Therefore, the frequency at which you would look for the n = 2 standing wave is 10 times the frequency of the fundamental frequency. In this case, the frequency would be:

f2 = 10 * 44.1 Hz = 441 Hz.

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Answer:

C

Explanation:

Fusion and fission are similar in that they both release large amounts of energy. Nuclear fusion is a process in which two nuclei join to form a larger nucleus. Nuclear fission is a process in which a nucleus splits into two smaller nuclei.

Answer:

Tortoise has the greatest momentum

Explanation:

Momentum of tourtise (p)=mass×velocity

=275×0.55

=151.25 kgm/s

When a speaker is lowered into water, the wavelength of the sound decreases.

When a speaker is lowered into water, the speed of sound changes, as the density and compressiblility of water are different from that of air.

In general, the speed of sound in water is higher than the speed of sound in air.

The wavelength of a sound wave is related to its speed and frequency by the equation:

wavelength = speed/frequency

Since the speed of sound increases when the speaker is lowered into water, but the frequency of the sound remains the same, the wavelength of the sound must decrease.

This means that the distance between adjacent peaks or troughs of the sound wave decreases as the speaker is lowered into water.

In other words, when a speaker is lowered into water, the wavelength of the sound decreases

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The heat that is absorbed by the hundred gram of 5 in order to raise the temperature from minus 10 degree Celsius to 20 degree Celsius is found to be 2.5 x 10⁵ J.

The heat absorbed by the ice will be given by the relation,

Q = m(L+c∆t)

Where M is the mass of the ice l is the latent heat of vaporization for the ice ∆t is the change in temperature of the ice and c is specific heat of water.

Now it is given that the mass of the ice is hundred grams and the temperature of the ice Rises from -10 degree Celsius to 20 degree Celsius.

The value of L is 2.5 x 10^-16 J/kg.

Putting all the values.

Q = 0.1(2.5 x 10⁶+4.2(30))

Q = 2.5 x 10⁵ J

So, the change in heat of the ice is found to be 2.5 x 10⁵ J.

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solid...............

The wavelength of the scattered radiation is approximately the same as the incident wavelength.

When X-rays pass through a material, they can scatter off the electrons within the material. This is known as Compton scattering. During this process, some of the energy of the X-rays is transferred to the electrons, causing them to move. As a result, the scattered X-rays have a longer wavelength than the incident X-rays.

The change in wavelength of the scattered X-rays can be calculated using the Compton formula:

Δλ = h/mc (1 - cosθ)

where Δλ is the change in wavelength, h is Planck's constant, m is the mass of the electron, c is the speed of light, and θ is the scattering angle.

In this problem, the incident X-rays have a wavelength of 0.0811 nm and scatter at an angle of 83.1 degrees. We can convert the angle to radians by multiplying by π/180:

θ = 83.1° × π/180 = 1.449 radians

Substituting the given values into the Compton formula, we get:

Δλ = (6.626 × 10⁻³⁴ J s)/(9.109 × 10⁻³¹ kg)(3 × 10⁸ m/s)(1 - cos 1.449)

Δλ ≈ 3.55 × 10⁻¹² m

The scattered wavelength is the sum of the incident wavelength and the change in wavelength:

λ' = λ + Δλ

λ' = 0.0811 nm + 3.55 × 10⁻¹²m.

λ' ≈ 0.0811 nm

Therefore, the wavelength of the scattered radiation is approximately the same as the incident wavelength.

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