The weight of a boy with a mass of 50 kg is _N

The space station ISS orbits the Earth approximately every 90 minutes. That is, the space station he orbits the Earth about 16 times in 24 hours a day.

The International Space Station is the largest modular space station in low earth orbit. Five space agencies are involved in this project.

These include NASA in the United States, Roscosmos in Russia, JAXA in Japan, ESA in Europe, and his CSA in Canada. Each orbit takes 90-93 minutes, so there are about 16 orbits per day (24 hours). Depending on the altitude of the ISS, the exact number of orbits per day is usually less than 16 (typically 15.5-15.9 orbits per day). 

Learn more about ISS

brainly.com/question/21840117

#SPJ4

The electric force between the rod and the cloth is 4.6 x 10⁷ N.

The electric force between the rod and the cloth is calculated by apply Coulomb's law.

This law states that electric force between two charged bodies is directly proportional to the product of the charges and inversely proportional to the distance between the charged bodies.

Mathematically, this law is given as;

F = kq²/r²

where;

Substitute the given parameters and solve for the electric force between the rod and the cloth as shown below.

F = kq²/r²

F = (8.99 x 10⁹ x 14.3 x 10⁻³ x 14.3 x 10⁻³) / (0.2)²

F = 4.6 x 10⁷ N

Thus, the electric force between the rod and the cloth is determined by applying Coulomb's law.

Learn more about electric force here: https://brainly.com/question/17692887

#SPJ1

wavelength at the maximum energy radiated by the sun is

499× 10⁻⁹m  (499nm)

wavelength at the maximum energy radiated by the sun occur measure by:

wien's displacement law : The black body radiation at a wavelength is inversely proportional to temperature.

acc. to wien's displacement law

λ= b/T

 λ is wavelength

where T is the temperature

The sun has a surface temperature of approximately 5800 k.

b is constant of proportionality

b = 2.8977×10⁻³mk

T = 5800k

using values in above equation

λ = 2.8977 × 10⁻³ mk/ 5800k

λ= 499× 10⁻⁹m  =499nm

wavelength at the maximum energy radiated by the sun is

499× 10⁻⁹m  =499nm

To know more about wien's displacement law:

https://brainly.com/question/13963015

#SPJ4

Muchas personas sienten seguridad en el dinero porque con el mismo puede tener un mator control de su vida en general.

Hay varias razones por las que algunas personas pueden sentir seguridad en el dinero:

En resumen, la seguridad que el dinero puede proporcionar está relacionada con la capacidad de satisfacer las necesidades básicas, hacer frente a situaciones de emergencia y planificar el futuro.

Aprende más sobre el dinero en https://brainly.com/question/21163265.

#SPJ11

The size of the net charge contained within the surface charge inside = total flux *ε = 0.0938*(8.85*10^-12) = 8.301*10^-13 C

Total flux = charge enclosed / ε

Therefore, you must first determine the overall flux. There is only flux via the two sides that are faced along the x axis since the E field is only in the x direction.

These faces are at x = a =0.269 m (left side of box)

and x = a+c = 0.5918 m (right side of box)

Left side of box E = 2+6*x^2 = 2+6*0.388^2 = 2.903

And the flux into the left side is E*A = 2.903*0.388*0.388 = 0.437

Now right side of box E = 2+6*0.5044^2 = 3.526

flux out of the right side is 3.526*0.388*0.388 = 0.5308

Total flux = flux out - fluxin = 0.5308 - 0.437 = 0.0938

charge inside = total flux *ε = 0.0938*(8.85*10^-12) = 8.301*10^-13 C

To know more about Total flux, visit:

https://brainly.com/question/29221352

#SPJ1

1). The current in the circuit is 0.9 A.

Using Ohm's Law, we can find the current in the circuit:

I = V/R

In this case, the resistance is 10 ohms and the voltage is 9V, so we have:

I = 9V / 10 ohms = 0.9 A

Therefore, the current in the circuit is 0.9 A.

2). The voltage in the circuit is 120.05 V.

Using Ohm's Law, we can find the voltage in the circuit:

V = I*R

In this case, the resistance is 35 ohms and the current is 3.43 A, so we have:

V = 3.43 A * 35 ohms = 120.05 V

Therefore, the voltage in the circuit is 120.05 V.

3). To find the resistance of the circuit from the graph, the resistance of the circuit is 2 ohms.

Resistance (R) = Voltage (V) / Current (I)

Since the graph shows a straight line, it means that the resistance of the circuit is constant. We can find the resistance of the circuit by calculating the slope of the line.

Slope = Rise / Run = ΔV / ΔI

Looking at the graph, we can see that the voltage increases by 4V when the current increases by 2A. Therefore:

ΔV = 4V

ΔI = 2A

Slope = ΔV / ΔI = 4V / 2A = 2 ohms

Therefore, the resistance of the circuit is 2 ohms.

4). The current pass through the circuit is \(I_{2}\) is 2 A.

We can solve this problem by using the principle of conservation of energy. The total energy provided by the battery is equal to the sum of the energy dissipated by the resistors. Since the resistors are connected in parallel, the voltage across each resistor is the same.

The energy dissipated by a resistor is given by the formula:

E = I^2 x R x t

where E is the energy dissipated, I is the current flowing through the resistor, R is the resistance of the resistor, and t is the time for which the current flows.

For the circuit with resistor R1, the energy dissipated is:

E1 = I x R1 x t

For the circuit with resistor R2, the energy dissipated is:

E2 = I2 x R2 x t

Since the batteries are identical, the total energy provided by the battery is the same for both circuits. Therefore, we have:

E1 + E2 = I x R1 x t + I2 x R2 x t

Substituting the given values, we get:

2 x (30) x t + I2 x (45) x t = 2 x (30 + 45) x t

Simplifying, we get:

60t + 45I2t = 150t

15I2t = 90t

\(I_{2}\) = 6 A/3 = 2 A

Therefore, the value of \(I_{2}\) is 2 A.

To know more about current, visit:

https://brainly.com/question/31051471

#SPJ1

The first fundamental force to separate itself out from the others as the universe cooled shortly after the Big Bang is believed to be (e) electromagnetism.

During the early stages of the universe, when the temperature was extremely high, all four fundamental forces (electromagnetism, weak force, strong force, and gravity) were unified into a single force called the "Grand Unified Force." As the universe expanded and cooled down, the energy levels decreased, causing a process called symmetry breaking.

The first force to separate from the unified force was electromagnetism. At a certain critical energy level, the electromagnetic force became distinct from the other forces, acquiring its own unique properties and interactions.

Afterward, as the universe continued to cool, the weak force and strong force also underwent similar symmetry breaking processes, leaving gravity as the last force to separate itself at much lower energy levels.

Therefore, electromagnetism is considered the first fundamental force to separate from the others during the early stages of the universe's evolution after the Big Bang.

Learn more about electromagnetism here

https://brainly.com/question/24319848

#SPJ11

Answer:

0.05s

Explanation:

Given parameters:

Number of rotations  = 50times

Time taken  = 2.5s

Unknown:

Period  = ?

Solution:

The period is the time taken for a body to make one complete rotation. It is mathematically expressed as;

     Period  = \(\frac{time taken}{number of rotation}\)  

    Period = \(\frac{2.5}{50}\)    = 0.05s

Scientific investigation asks about a cause-and-effect relationship between two variables. Thus, the correct answer is (a).

Scientific investigation is intended to create a hypothesis and demonstrate its validity or lack thereof. Experiments must be conducted in order to test these hypotheses, and these experiments are planned in accordance with the discovery of a cause-and-effect relationship between the two variables under scientific investigation. In these experiments, the "cause" is variable upto various degrees, and the "effect" of the variance is noted. The experimental design, which will try to manipulate the causes to see how these manipulations impact the second variable, will thus be guided by knowledge of the cause-and-effect connection.

Observations are frequently the first step in a scientific investigation.

An observation is something that is discovered using the senses of humans or tools and measurement technologies that support the senses of humans. Important scientific discoveries may result from unintentional observations.

Learn more about Scientific investigation here:

https://brainly.com/question/8386821

#SPJ9

Answer:

1. Amplitude.

2. Rarefaction.

3. Wavelength.

4. Compression.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission. Some of the properties of sound waves as it travels through a medium such as solid, liquid and gas includes the following;

1. Amplitude: the density of the medium's particles at the compressions of the waves.

2. Rarefaction: the part of a wave where the particles of the medium are farther apart. This ultimately implies that, it is part of a longitudinal wave in which the particles that make up the matter for the movement of the wave are separated by a greater distance.

3. Wavelength: the distance between compressions or rarefactions i.e the distance between two successive compressions or refractions.

4. Compression: the part of a wave where the particles of the medium are closer together. This ultimately implies that, it is part of a longitudinal wave in which the particles that make up the matter for the movement of the wave are closer together.

Answer:

here is the answers .......

The amount of work exerted during the lifting process is approximately 8,344.51 Joules, representing the gravitational potential energy gained as the bucket and water system is raised from the 29.3 m deep well.

To determine the amount of work performed during the lifting process, we need to calculate the gravitational potential energy gained by the bucket and water system as it is raised from the well.

The work done is equal to the change in gravitational potential energy, which can be calculated using the formula:

Work = mgh

where:

m = mass (combined mass of the water and bucket)

g = acceleration due to gravity (approximately 9.8 m/s²)

h = height (depth of the well)

Given information:

Mass of water and bucket (m) = 12.1 kg

Height of the well (h) = 29.3 m

First, let's calculate the gravitational potential energy gained by the water and bucket system:

Potential energy = mgh

Potential energy = (12.1 kg + 18.9 kg) × 9.8 m/s² × 29.3 m

Potential energy = 31 kg × 9.8 m/s² × 29.3 m

Potential energy ≈ 8,344.51 Joules

Therefore, the work performed during the lifting process is approximately 8,344.51 Joules.

You can learn more about lifting process at

https://brainly.com/question/14717666

#SPJ11

Answer:

We found out more about how the universe had started (Big Bang theory), how the planets were created and how stars are born.

Answer:

They contain loosely packed atoms.

Explanation:

It looks like you're given

\(x(t) = -11\,\mathrm m + \left(1\dfrac{\rm m}{\rm s}\right) t - \left(5\dfrac{\rm m}{\mathrm s^3}\right) t^3\)

\(y(t) = 19\,\mathrm m + \left(3\dfrac{\rm m}{\rm s}\right) t - \left(9\dfrac{\rm m}{\mathrm s^2}\right) t^2\)

The particle's position vector at time \(t\) is given by

\(\vec r(t) = x(t)\,\vec\imath + y(t)\,\vec\jmath\)

Differentiate \(\vec r\) twice to recover the velocity and acceleration vectors.

\(\vec a(t) = \dfrac{d\vec v(t)}{dt} = \dfrac{d^2\vec r}{dt^2} = x''(t)\,\vec\imath + y''(t)\,\vec\jmath \\\\ \implies \vec v(t) = \left(1\dfrac{\rm m}{\rm s} - \left(15\dfrac{\rm m}{\mathrm s^3}\right) t^2\right)\,\vec\imath + \left(3\dfrac{\rm m}{\rm s} - \left(18\dfrac{\rm m}{\mathrm s^2}\right) t\right) \,\vec\jmath \\\\ \implies \vec a(t) = -\left(30\dfrac{\rm m}{\mathrm s^3}\right)t \, \vec\imath - \left(18\dfrac{\rm m}{\mathrm s^2}\right) \,\vec\jmath\)

At \(t=1.4\,\rm s\), the particle has acceleration

\(\vec a(1.4\,\mathrm s) = \left(-42\,\vec\imath - 18\,\vec\jmath) \dfrac{\rm m}{\mathrm s^2}\)

with magnitude

\(\|\vec a(1.4\,\mathrm s)\| = \sqrt{\left(-42\dfrac{\rm m}{\mathrm s^2}\right)^2 + \left(-18\dfrac{\rm m}{\mathrm s^2}\right)^2} \approx 45.695\dfrac{\rm m}{\mathrm s^2}\)

and making an angle \(\theta\) relative to the positive \(x\)-axis such that

\(\tan(\theta) = \dfrac{-18}{-42} = \dfrac37\)

Since both components of the acceleration vector have negative sign, the acceleration points into the third quadrant, so that we add a multiple of 180° after taking the inverse tangent of both sides, namely

\(\theta = \tan^{-1}\left(\dfrac37\right) - 180^\circ \approx -156.801^\circ\)

Now, (a) the magnitude of the net force acting on the particle is, by Newton's second law,

\(F = (0.41\,\mathrm{kg})\|\vec a(1.4\,\mathrm s)\| \approx \boxed{18.735\,\mathrm N}\)

and (b) makes the same angle as the acceleration vector, \(\theta \approx \boxed{-156.801^\circ}\).

At this moment, its velocity vector is

\(\vec v(1.4\,\mathrm s) = \left(-28.4\vec\imath - 22.2\,\vec\jmath\right) \dfrac{\rm m}{\rm s}\)

which (c) makes an angle \(\theta\) such that

\(\tan(\theta) = \dfrac{-22.2}{-28.4} = \dfrac{111}{142}\)

This vector also points in the third quadrant, so

\(\theta = \tan^{-1}\left(\dfrac{111}{142}\right) -180^\circ \approx \boxed{-142.986^\circ}\)

As a wave approaches a shoreline at a non-parallel angle, the wave crest is bent in response to changes in wave speed. This is called wave refraction.

Wave refraction is the redirection of a wave, usually by the shore, so that it moves more nearly parallel to the shoreline. Wave refraction is a phenomenon that happens when waves slow down in shallow water.

When a wave moves from deep to shallow water, the shallow part of the wave slows down, making it turn. The wave's crest curves towards the shoreline in wave refraction, while the trough remains straight. When the wave is moving toward the shoreline at an angle, the crest is bent in response to changes in wave speed.

Wave refraction is important because it contributes to the development of currents along the shoreline. The swash is strong when waves are coming straight in, but when they come at an angle, the water has to flow back to the side to keep the level. As a result, a current is created that flows parallel to the shore.

Learn mroe about refraction at https://brainly.com/question/27932095

#SPJ11

answer of the question is into the picture ️

the frequency is  6x10⁻¹⁴ s⁻¹, the work function is 1.890 x 10⁻¹⁹ J, the energy of photons is  1.875 x 10⁻¹⁸ J and the wavelength is 780 nm.

a. The frequency of the 500 nm radiation is  6x10⁻¹⁴ s⁻¹.

b. The work function for the material can be determined using the equation W = hf - eV, where W is the work function, h is Planck's constant, f is the frequency of the radiation, and eV is the energy necessary to stop the photoelectrons from reaching the anode. In this case, eV = 3 V, so W = 6.63x10⁻³⁴ x 6x10¹⁴ - 3 = 1.890 x 10⁻¹⁹ J.

c. The energy of the photons associated with the unknown wavelength can be determined by using the equation E = hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the radiation. Since we do not know the frequency of the unknown wavelength, we can use the equation E = hc/lambda, where c is the speed of light and lambda is the wavelength of the radiation. Since we are given that the potential required to stop the photoelectrons is 3V, we can calculate the energy of the photon as E = 3/1.6x10¹⁹ = 1.875 x 10⁻¹⁸ J.

d. The unknown wavelength can be determined using the equation lambda = hc/E, where h is Planck's constant, c is the speed of light, and E is the energy of the photon. Substituting the values, we get lambda = 6.63x10⁻³⁴ x 3x10⁸/1.875 x 10 = 7.8 x 10⁻⁷ m, or 780 nm.

learn more about photoelectrons here :

brainly.com/question/31474023

#SPJ4

Answer:

P.E = 2934.75

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

\( P.E = mgh\)

But we know that weight = mg = 645N

Substituting into the equation, we have;

\( P.E = 645 * 4.55 \)

\( P.E = 2934.75 J\)

Potential energy, P.E = 2934.75 Joules.

Answer:

A đến B. Vật thứ nhất chuyển động đều từ A với vận tốc 36km/h.

Explanation:

Longest wavelength is 1.5 m and The frequency associated with this longest wavelength is 86.7 Hz

A waveform signal that is carried in space or down a wire has a wavelength, This is the distance in the next cycles between two identical locations (adjacent crests). This length is typically defined in wireless systems in metres (m), centimeters (cm), or millimetres (mm) (mm).

The wavelength equation of a standing wave is given by:

λn= 2/n L

Where:

L is the length of the string

n is a natural number

We use n=1 to find the longest possible wavelength, so we will have:

λ1= 2L

λ1=2 * 0.75 = 1.5m

Longest wavelength is 1.5 m

b)

The speed of the wave is given by:

v= f λ

So we just need to find the f (frequency).

f= v/λ

f = 130/1.5

f = 86.7 Hz

The frequency associated with this longest wavelength is 86.7 Hz

The complete question is : A string with a length of 0.75 m is fixed at both ends. (a) What is the longest possible wavelength for the traveling waves that can interfere to form a standing wave on this string? (b) If waves travel with a speed of 130 m/s on this string, what is the frequency associated with this longest wavelength?

To learn more about Wavelength refer to :

https://brainly.com/question/10728818

#SPJ4

Answer:

translucent and transparent

Electromagnetic wave has the matter that forms a pattern moving back and for the right angle in the direction that the wave is travelling.

When an Electromagnetic wave moves. It possesses two components one is the electric field component and the other is the magnetic field component.

Both the electric field component and the magnetic field components are at the right angle with each other and also their fluctuating back and forth at the right angles.

Their back and forth movement is in such manner that the direction of the travelling of the wave is perpendicular to both of them.

So, we can conclude that electromagnetic wave has the matter that forms pattern of moving back and moving forth and perpendicular to each other and to the direction of the wave.

To know more about electromagnetic wave, visit,

https://brainly.com/question/25847009

#SPJ4

Answer:

1

Explanation:

How many digits are in front of the decimal in scientific notation?

The greatest acceleration of the mass is 23.17 m/s^2.

The potential energy stored in the compressed spring can be calculated as: U = (1/2) k x^2

where U is the potential energy, k is the force constant of the spring, and x is the displacement of the spring from its equilibrium position.

In this problem, the potential energy stored in the spring is given as 12.0 J, and the force constant of the spring is 28.0 N/cm = 280 N/m. We can use this information to find the displacement of the spring:

12.0 J = (1/2) (280 N/m) x^2

Solving for x, we get:

x =\(\sqrt{((2*12.0 J)/(280 N/m))}\) = 0.24 m

Now, when the mass is released from rest, the spring will push it with a force proportional to the displacement of the spring from its equilibrium position. At the maximum compression of the spring, the force on the mass will be:

F = kx = (280 N/m) (0.24 m) = 67.2 N

According to Newton's second law, the acceleration of the mass will be:

a = F/m = 67.2 N / 2.90 kg = 23.17 m/s^2

To know more about acceleration here

https://brainly.com/question/25876659

#SPJ4

(8a) The work done on the block is 2,000 J.

(8b) The energy converted into thermal energy is 1,000 J.

The work done on the block is calculated by applying the following formula.

W = F x d

where;

W = 200 N x 10 m

W = 2,000 J

The energy converted into thermal energy is equal o work done by friction force.

W = 100 N x 10 m

W = 1,000 J

Learn more about work done here: https://brainly.com/question/8119756

#SPJ1

The relationship between temperature, kinetic energy and velocity of gas particles can be described as follows:As the temperature of a gas is increased, the kinetic energy and velocity of the gas particles also increase.

Temperature of a gas is a measure of the average kinetic energy of its particles.

This means that as the temperature increases, the average kinetic energy of the gas particles also increases. This, in turn, causes an increase in the velocity of the gas particles.The relationship between temperature, kinetic energy and velocity of gas particles is governed by the kinetic theory of gases. This theory states that the motion of gas particles is related to their temperature, pressure, and volume.

The theory also states that gas particles are in constant random motion and that their motion is determined by their kinetic energy.

SummaryAs the temperature of a gas is increased, the kinetic energy and velocity of the gas particles also increase. This relationship is governed by the kinetic theory of gases, which states that the motion of gas particles is related to their temperature, pressure, and volume.

Learn more about kinetic energy click here:

https://brainly.com/question/8101588

#SPJ11

Answer:

Explanation:

goes down as the temperature decreases, and vice versa. Sound's frequency is independent of temperature, while its speed is directly proportional to temperature. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly. ... This is faster than 331 meters per second, which is the speed of sound in air at freezing temperatures.

hope this helps!!!!

Sound waves travel more fastly in hot air , since particles in atmosphere gets more energetic in higher temperature. Hence, as the temperature decreases, the wave’s speed decreases.

Sound waves are mechanical waves passing through a medium. Sound waves are longitudinal where, the oscillation of particles is along the direction of wave propagation.

Compression waves, which at a microscopic scale rely on molecules transmitting energy one to another, are used to convey sound through the air.

Higher temperatures produce more energetic air molecules, which vibrate more rapidly. As a result of the molecules colliding with one another, the sound waves can move more quickly.

Therefore, as the temperature decreases, the speed of sound wave decreases. Thus, option B is correct.

Find more on sound waves:

https://brainly.com/question/21995826

#SPJ2

Answer:

\(\huge\boxed{\sf V_i=60 \ m/s}\)

Explanation:

Final speed = \(V_f\) = 40 m/s

Time = t = 5 s

Acceleration = a = -4 m/s²

Initial velocity = \(V_i\) = ?

\(\displaystyle a = \frac{V_f-V_i}{t}\)

Put the givens in the above formula

\(\displaystyle -4=\frac{40 - V_i}{5} \\\\Multiply \ -5 \ to \ both \ sides\\\\-4 \times 5 = 40 - V_i\\\\-20 =40-V_i\\\\Subtract \ 40 \ to \ both \ sides\\\\-20-40=-V_i\\\\-60\ m/s=-V_i\\\\60 \ m/s = V_i\\\\V_i=60 \ m/s\\\\\rule[225]{225}{2}\)

Answer:

436.56 centimeters

Explanation:

heart this! My answer is correct, I search it.