hydrogen molecules, with a molar mass of 2.016 g/mol, in a certain gas have an rms speed of 390 m/s. a)What is the temperature of this gas, in kelvins?

Answer:

A. reduce the amount of soil by one-half and apply the same amount of force

Explanation:

The car is moving at approximately 12.5 meters per second.

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

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Jonathan needs to maintain a separation of 0.543 mm between the plates to get the desired charge, and a dielectric constant of 92.6 to achieve a separation of 5 mm with a dielectric.

(a) Using the equation Q = CV, where Q is the charge, C is the capacitance, and V is the voltage, we can solve for the capacitance: C = Q/V =\((8.15 x 10^-9 C) / (50 V) = 1.63 x 10^-10 F.\)

Then, using the formula for capacitance of parallel plate capacitors: C = ε0A/d, where ε0 is the permittivity of free space, A is the area of the plates, and d is the separation distance, we can solve for the separation distance: d =\(_{3}OA/C = (8.85 x 10^-12 F/m) x (0.01 m^2) / (1.63 x 10^-10 F) = 0.543 mm.\)

(b) To find the dielectric constant, we can use the formula for capacitance of a parallel plate capacitor with a dielectric: C = εrε0A/d, where εr is the relative permittivity or dielectric constant of the material. Solving for εr, we get: εr = Cd / ε0A = \((1.63 x 10^-10 F)\) x (0.005 m) / \((8.85 x 10^-12 F/m)\) x \((0.01 m^2)\) = 92.6.

Therefore, Jonathan should use a dielectric with a relative permittivity of 92.6 to achieve a separation of 5 mm.

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Answer:

If the particles of the medium vibrate in a direction parallel to the direction of propagation of the wave, it is called a longitudinal wave. In longitudinal waves, the particle movement is parallel to the direction of wave propagation.

Explanation:

Answer:

（3x - 4）（x - 1）

Explanation:

Your question is wrong

15. The observations that supported the geocentric models of the solar system and the phenomena described in the table have some similarities and differences. One similarity is that they all involve objects in the sky that are visible to the eye. The observations that supported the geocentric models involved the apparent motion of the planets, the sun, and the moon across the sky, as well as the phases of Venus and the moons of Jupiter.

The solar system refers to the collection of planets, moons, asteroids, comets, and other celestial bodies that orbit around a central star, which is the Sun. It includes eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, and their respective moons, as well as  planets such as Pluto, and countless other objects that orbit the Sun.

16. If a small, bright object appeared in the sky, moved along with a nearby constellation, and then disappeared a year later, it most likely occurred within our solar system, possibly in the asteroid belt between Mars and Jupiter or in the Kuiper Belt beyond Neptune. This is because objects that are outside of our solar system would not move with the background constellations over the course of a year, due to their great distance from Earth.

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Answer:

The Moon rotates on its axis and revolves around the Earth as the Earth revolves around the Sun.

A 66.1-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.51 m/s. The nonconservative work done on the boy is approximately -42.7 kilojoules.

To find the nonconservative work done on the boy, we need to consider the change in the boy's mechanical energy during the process. Mechanical energy is the sum of the boy's kinetic energy (KE) and gravitational potential energy (PE).

The initial mechanical energy of the boy is given by the sum of his kinetic energy and potential energy when he catches the wave:

E_initial = KE_initial + PE_initial

The final mechanical energy of the boy is given by the sum of his kinetic energy and potential energy after he drops through the height:

E_final = KE_final + PE_final

The nonconservative work done on the boy is equal to the change in mechanical energy:

Work_nonconservative = E_final - E_initial

Let's calculate each term:

KE_initial = (1/2) * m * v_initial^2

= (1/2) * 66.1 kg * (1.60 m/s)^2

PE_initial = m * g * h_initial

= 66.1 kg * 9.8 m/s^2 * 1.59 m

KE_final = (1/2) * m * v_final^2

= (1/2) * 66.1 kg * (8.51 m/s)^2

PE_final = m * g * h_final

= 66.1 kg * 9.8 m/s^2 * 0

Since the boy ends at ground level, the final potential energy is zero.

Substituting the values into the equation for nonconservative work:

Work_nonconservative = (KE_final + PE_final) - (KE_initial + PE_initial)

Simplifying:

Work_nonconservative = KE_final - KE_initial - PE_initial

Calculating the values:

KE_initial = (1/2) * 66.1 kg * (1.60 m/s)^2

PE_initial = 66.1 kg * 9.8 m/s^2 * 1.59 m

KE_final = (1/2) * 66.1 kg * (8.51 m/s)^2

Substituting the values:

Work_nonconservative = [(1/2) * 66.1 kg * (8.51 m/s)^2] - [(1/2) * 66.1 kg * (1.60 m/s)^2 - 66.1 kg * 9.8 m/s^2 * 1.59 m]

Calculating the result:

Work_nonconservative ≈ -42.7 kJ

Therefore, the nonconservative work done on the boy is approximately -42.7 kilojoules. The negative sign indicates that work is done on the boy, meaning that energy is transferred away from the boy during the process.

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According to the information, the rms speed of the gas will remain unchanged.

The rms (root-mean-square) speed of a gas is directly proportional to the square root of its temperature. In this scenario, the temperature is constant, which means that the rms speed of the gas will also remain constant.

The change in volume does not have a direct effect on the rms speed of the gas, as long as the temperature remains unchanged. Therefore, the rms speed of the gas in the vessel will not change.

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Answer:

Some examples of things that stick together include clothes after they were in the dryer because a charge builds up on the objects, causing them to attract to each other. Things that don't stick together may include two neutral objects, like two pieces of neutral paper. ... If they repel, then they are the same charge.

Explanation:

Answer:

C

Explanation:

gravity is a pulling force according to Newton

Answer:

The time taken by the projectile to hit the ground is 6.85 sec.

Explanation:

Given that,

Vertical height of cliff = 230 m

Distance = 300 m

Suppose, determine the time taken by the projectile to hit the ground.

We need to calculate the time

Using second equation of motion

\(s=ut+\dfrac{1}{2}gt^2\)

Where, s = vertical height of cliff

u = initial vertical velocity

g = acceleration due to gravity

Put the value in the equation

\(230=0+\dfrac{1}{2}\times9.8\times t^2\)

\(t=\sqrt{\dfrac{230\times2}{9.8}}\)

\(t=6.85 sec\)

Hence, The time taken by the projectile to hit the ground is 6.85 sec.

Based on empirical evidence, Scientific evidence is gathered through testing ideas; option D.

Empirical evidence refers to evidence that can be measure and obtained through observation and experiments.

Empirical evidence can be reproduced and repeated by other scientists around the world.

Science is based on empirical evidence.

Scientific evidence is gathered through testing ideas

Non-science and pseudo-science is not  based on empirical evidence as their evidence cannot be easily reproduced by others.

In conclusion, empirical evidence is reproducible and numerical.

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Answer:

Option B is appropriate for this question

1. The electric field pattern due to charged sphere A can be represented by lines radiating outward from the sphere.

2. The magnitude of the charge on sphere A is approximately 0.0833 Coulombs.

3. The electrostatic force experienced by sphere B when placed at point P is approximately 2.675 x 10^-4 Newtons.

1. These lines should be evenly spaced and symmetric around the sphere, indicating a radial field pattern. Since the electric field at point P is directed towards sphere A, the field lines should point inward towards the sphere. Thus, the electric field pattern would resemble a series of concentric circles with lines converging towards the center of sphere A.

2. To calculate the magnitude of the charge on sphere A, we can use the formula for the electric field strength (E) due to a point charge:

E = k * (Q / r^2)

where k is the electrostatic constant (approximately 9 x 10^9 N m^2/C^2), Q is the charge on the sphere, and r is the distance from the sphere to the point P.

From the given information, we have E = 3 x 10^7 N/C and r = 0.5 m. Plugging these values into the formula and solving for Q:

3 x 10^7 N/C = (9 x 10^9 N m^2/C^2) * (Q / (0.5 m)^2)

Simplifying the equation, we find:

Q = (3 x 10^7 N/C) * (0.5 m)^2 / (9 x 10^9 N m^2/C^2)

Q ≈ 0.0833 C (Coulombs)

Therefore, the magnitude of the charge on sphere A is approximately 0.0833 Coulombs.

3. When sphere E, which has an excess of 105 electrons, is placed at point P, it will experience an electrostatic force due to the interaction with sphere A. The electrostatic force between two charges can be calculated using Coulomb's law:

F = k * (|q1| * |q2|) / r^2

where k is the electrostatic constant, q1 and q2 are the charges on the spheres, and r is the distance between them.

Since each electron carries a charge of approximately -1.6 x 10^-19 C, the excess charge on sphere E is:

q2 = 105 electrons * (-1.6 x 10^-19 C/electron)

Plugging in the values and the given distance of 0.5 m, we have:

F = (9 x 10^9 N m^2/C^2) * (|0.0833 C| * |-1.6 x 10^-19 C|) / (0.5 m)^2

Simplifying the equation, we find:

F ≈ 2.675 x 10^-4 N (Newtons)

Therefore, the electrostatic force experienced by sphere E when placed at point P is approximately 2.675 x 10^-4 Newtons.

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Answer:

tis unknown

Explanation:

dan dan duuun dun dun

Answer:

Explanation:

It's graph A because the pressure in the tire is increasing as the amount of air going into it increases. B says the pressure drops exponentially as air goes in, and C says that the pressure stays the same as air goes in. Pressure in a tire increases proportionally to the amount of air in it.

Since focal length cannot be negative for a converging lens, we take the positive value: f ≈ 41 cm Option C

To determine the focal length of the lens, we can use the lens formula, which relates the object distance (u), image distance (v), and focal length (f) of a lens. The lens formula is given by:

1/f = 1/v - 1/u

In this case, the object distance (u) is 25 cm and the image distance (v) is 64 cm. We can substitute these values into the lens formula to solve for the focal length:

1/f = 1/v - 1/u

1/f = 1/64 cm - 1/25 cm

To simplify the equation, we can find a common denominator:

1/f = (25 - 64) / (64 * 25)

1/f = -39 / (64 * 25)

Now, we can invert both sides of the equation to solve for the focal length:

f = (64 * 25) / -39

f ≈ -41.03 cm

Since focal length cannot be negative for a converging lens, we take the positive value:

f ≈ 41 cm

Therefore, the correct answer is option C) 41 cm.

It's important to note that in the lens formula, distances are measured with respect to the lens, with positive values indicating distances on the opposite side of the incident light. The negative value obtained for the focal length indicates that the lens is a converging lens, as expected. Option C

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Answer:

1. The induced current will increase.

2. The ammeter will detect an increase in current, and the compass will detect a stronger magnetic field.

3. the ratio of incoming and outgoing voltages

4. Voltage and electric current are induced.

100%

The induced current will increase.

                                                           or

        \(${\displaystyle {\mathcal {E}}=-{\frac {\mathrm {d} \Phi _{B}}{\mathrm {d} t}}}\)

        \($\nabla \times \mathbf {E} =-{\frac {\partial \mathbf {B} }{\partial t}}\)

        or

        \(${\displaystyle \oint _{\partial \Sigma }\mathbf {E} \cdot \mathrm {d} \mathbf {l} =-\int _{\Sigma }{\frac {\partial \mathbf {B} }{\partial t}}\cdot \mathrm {d} \mathbf {A} }\)

Given is that a current is induced by moving a magnet in and out of a coil of wire.

As the magnet moves twice as fast, then the rate of change of magnetic flux will increase and hence the induced current will increase.

Therefore, we can conclude that the induced current will increase.

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Answer:

Uhm thags hsed

Explanation:

Dkrr

Answer:

r = 2.63 m

Explanation:

To find the distance at which the sound level is 120dB, you first calculate the intensity of the sound. You use the following formula:

\(\beta=10log(\frac{I}{I_o})\)           (1)

β: sound level = 120dB

I: intensity of the sound

Io: threshold of hearing = 10⁻12W/m^2

You solve the equation (1) for I and replace the values of all parameters:

\(\beta=log(\frac{I}{I_o})^{10}\\\\10^\beta=10^{log(\frac{I}{I_o})^{10}}=(\frac{I}{I_o})^{10}\\\\I=10^{\beta/10}I_o\)

\(I=10^{120/10}(10^{-12}W/m^2)=1\frac{W}{m^2}\)

Next, you use the following formula for the power of the sound with intensity I, and you solve for r:

\(I=\frac{P}{4\pi r^2}\\\\r=\sqrt{\frac{P}{4\pi I}}\)

r: distance at which the sound level is 120dB

P: power of the sound = 87W

I: intensity of the sound = 1W/m^2

You replace the values of I and P for calculating r:

\(r=\sqrt{\frac{87W}{4\pi (1W/m^2)}}=2.63m\)

The distance is at 2.63m from the source of the soundr = 2.63m

Acceleration is the change in velocity over time. We can calculate the acceleration of the bicyclist during the time 2.0 s to 5.0 s using the formula acceleration = (final velocity - initial velocity) / time.

The initial velocity of the bicyclist at 2.0 s is 2.0 m/s and the final velocity at 5.0 s is 8.0 m/s. The time interval between 2.0 s and 5.0 s is 3.0 s.

Substituting these values into the formula, we get acceleration = (8.0 m/s - 2.0 m/s) / 3.0 s = 6.0 m/s / 3.0 s = 2.0 m/s^2.

So, the acceleration of the bicyclist during the time 2.0 s to 5.0 s was 2.0 m/s^2.

Answer:

f(y)=2

Explanation:

5x/5-20/5

x=4

f(y+2)=4

    -2   -2

f(y)=2

One of the most effective time management strategies that I have used is creating a to-do list. They are successful because they help me to prioritize tasks, remain organized, increase productivity, and reduce stress.

One of the most effective time management strategies that I have used is creating a to-do list.

Creating a to-do list helps me to prioritize tasks and ensures that I do not forget any important tasks.

When creating a to-do list, I ensure that I put the most important tasks at the top of the list and then work my way down.

The to-do list has helped me to organize my work, manage my time effectively and reduce stress.

Another effective strategy that I have used is breaking large tasks into smaller manageable tasks.

When dealing with complex tasks, I break them down into smaller, more manageable chunks.

This helps me to focus on the individual parts of the task, which are easier to handle and manage.

When I focus on smaller tasks, I find it easier to get started, and I gain momentum as I make progress on each small task.

This method has helped me to increase my productivity and reduce the stress that comes with handling large tasks.

In conclusion, the above time management strategies have helped me to manage my time effectively at home, school, and in the workplace.

They are successful because they help me to prioritize tasks, remain organized, increase productivity, and reduce stress.

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ANSWER

EXPLANATION

Parameters given:

Mass of student, m = 64.0 kg

Initial velocity of student, u = 4.53 m/s

Initial velocity of skateboard, U = 0 m/s

Final velocity of student and skateboard, v = 2.63 m/s

To solve this problem, we have to apply the law of conservation of momentum which states that the total momentum of a system is constant.

This implies that:

The final velocity of the student and skateboard are equal. This implies that:

where M = mass of skateboard

Substitute the given values into the equation and solve for M:

That is the mass of the skateboard.

The order of the average surface temperature of the given planets as Mercury, Earth, Mars, Jupiter, and Neptune based on their distance from the sun.

The Solar System can be described as the gravitationally bound system of the Sun and the plants are the objects that orbit it. The solar system is formed 4.6 billion years ago from the gravitational collapse of a giant interstellar cloud.

Most of the mass of the solar system is contained in the Sun and the remaining mass is in the planet Jupiter. The four inner planets Mercury, Venus, Earth, and Mars are terrestrial planets, made primarily of rock and metal.

The two largest planets Jupiter and Saturn, are gas giants, made mainly of hydrogen and helium. The next two, Uranus and Neptune, are ice giants, made of volatile substances with hydrogen and helium, such as ammonia, water, and methane.

The average surface temperature of Mercury is 333°F (167°C), Earth 59°F (15°C), Mars -85°F (-65°C), Jupiter -166°F (-110°C), and Neptune -330°F (-200°C)

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Answer:

4.24nm

0.385eV

Explanation:

Maximum wavelength (λmax) :

λmax = ( hc) /Φ

h = plancks constant = 6.63 * 10^-34

c = speed of light = 3*10^8

1ev = 1.6 * 10^-19

Φ = 2.93eV = 2.93* (1.6*10^-19) = 4.688*10^-19

λmax = [(6.63 * 10^-34) * (3 * 10^8)] / 4.688*10^-19

λmax = 19.89 * 10^-26 / 4.688*10^-19

λmax = 4.242 * 10^-7 m

λmax= 4.24nm

B.)

E = hc / eλ eV

λ = 3.75nm = 3.75 * 10^-7m = 375 *10^-9

E = (6.63 * 10^-34) * (3 * 10^8) / (1.6 * 10^-19) * (375 * 10^-9)

E = 19.89 * 10^-26 / 600 * 10^-28

E = 0.03315 * 10^-26 + 28

E = 0.03315 * 10^2

E = 3.315 eV

Stopping potential : (3.315 eV - 2.93eV) = 0.385eV

The angular acceleration of the wheel 0.16 rad/sec².

The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration.

The net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity whose strength or magnitude is determined by the norm and whose direction correlates with a plumb bob.

Given in the question,

angular acceleration = 4/25

angular acceleration = 0.16 rad/sec²

The angular acceleration of the wheel 0.16 rad/sec².

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Answer:

Explanation:

2^5=32-20=-12 meters per sec (going backwards).

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