21 What happens to the molecules of a gas when the gas changes into a liquid?

A They move closer and lose energy.
B They move closer and gain energy.
с They move apart and lose energy.
D They move apart and gain energy.​

electrical forces acting on the objects It is correct that FAB = -FBA does have a charge of +6.

A pushing or pull that an object experiences as a result of interacting with another item is known as a force. Every time two items interact, a force is exerted on all of the objects.

Any of the four fundamental forces—gravitational, electromagnetic, weak, and weak—that control how objects or particles interact as well as some particle decay—also known as the fundamental interaction is referred to as a fundamental force in physics.

To know more about forces visit:

https://brainly.com/question/13191643

#SPJ4

Problem-Solving Strategy 7.1: Rotational Dynamics Problems Rotational dynamics is the study of rotational motion, which is movement about an axis or a pivot point. We'll look at a few sample problems that illustrate the procedure to approach and resolve rotational dynamics problems in this article. The below diagram depicts the scenario given: At an angle of 10 degrees, the pencil starts to fall. We need to determine the angular acceleration. The given problem does not provide the mass, length or other physical quantities of the pencil. Therefore, we assume that the pencil is a point mass with a negligible size. The torque equation is used to solve rotational motion issues.

It is given as follows: τ = Iα where τ is torque, I is moment of inertia and α is angular acceleration. Let's use this equation to solve the problem. Ignoring air resistance, the only force acting on the pencil is the gravitational force, which acts on the center of mass of the pencil. The gravitational force can be broken down into two components, mgcosθ and mgsinθ, where m is mass, g is acceleration due to gravity, θ is the angle of the pencil with respect to the vertical axis. Let's determine the direction of torque produced by these forces.(i) mgcosθ is acting on the center of mass of the pencil. As it is acting along the vertical line passing through the pivot point, the torque produced is zero.(ii) mgsinθ is acting at a perpendicular distance r from the pivot point.

The direction of torque produced by this force is counterclockwise, hence, positive magnitude. To find the angular acceleration, let's use the torque equation.τ = Iα= F  = mr²α (Moment of inertia of point mass)α = τ / Iα = mgsinθ * r / (mr²)α = gsinθ / r Let's insert the values. g = 9.8 m/s²θ = 10.0°r = length of the pencil = unknown Here, the length of the pencil is unknown. If we take r as the length of the pencil and find the value of angular acceleration, it will be true only for this angle (10.0 degrees) because torque, and hence, angular acceleration, varies with respect to the length of the pencil. It will not be true for other angles. The relationship between the angle and the length of the pencil is given by the trigonometric function sinθ = r / L.α = gsinθ / rα = g / Lα = 9.8 / L radians/s²The angular acceleration is inversely proportional to the length of the pencil. This implies that the shorter the length of the pencil, the greater the angular acceleration and the longer the length of the pencil, the smaller the angular acceleration. Therefore, when we try to balance the pencil for a longer time, we need to use a smaller angular acceleration, so we need to keep the pencil vertical.

To know more about gravitational force visit

https://brainly.com/question/32609171

#SPJ11

The three essential diagnostic features of anorexia nervosa, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), are:

It is important to note that these diagnostic features must be present and significantly impair the individual's functioning in order to meet the criteria for anorexia nervosa. Additionally, there may be other associated features and behaviors,

Learn more about DSM-5 from

https://brainly.com/question/7296239

#SPJ11

A 45 L sample of gas has a pressure of 975 torr at 35.2°C. The new temperature in °C is -222°C.

Given that, volume V₁ = 45 × 10³ ml

Pressure P₁ = 975 torr

Temperature T₁ = 35.2 °C = 35.2 + 273 = 308.2 K

V₂ = 3.6 × 10³ ml

P₂ = 2.61 atm = 1983.6 torr

T₂ = ?

The formula of combined gas law is P₁ V₁ / T₁ = P₂ V₂/ T₂

975*45 × 10³ / 308.2 = 1983.6*3.6 × 10³/ T₂

T₂ * 975 * 45 / 308.2 = 1983.6 * 3.6

T₂ = 1983.6 * 3.6 * 308.2 / 975 * 45 = 50.16 K - 273 = -222°C

To know more about gas law:

https://brainly.com/question/18326684

#SPJ4

Answer:

e search mo sa utak mo kasi di mo alam

Answer:

at the top of the ramp before dropping in

Explanation:

Potential energy is basically the build up of energy before it's released.

the minimum frequency of radiation that will produce a photoelectric effect.

Answer:

The threshold frequency is defined as the minimum frequency of incident radiation below which the photoelectric emission is not possible completely.

The mutual inductance between the coils is 6.25μH. the coefficient of coupling between the coils is approximately 0.447.

The mutual inductance between the coils can be determined using the formula:M = (Δφ_Y) / (N_X * ΔI_X)
Where M represents the mutual inductance, Δφ_Y is the change in flux in coil Y, N_X is the number of turns in coil X, and ΔI_X is the change in current in coil X.
Plugging in the values given, we have: M = (5mWb) / (200 * 4A)

M = 5mWb / 800A

M = 6.25μH. Therefore, the mutual inductance between the coils is 6.25μH.

(b) The coefficient of coupling (k) can be calculated using the formula:

k = M / √(L_X * L_Y)

Where k represents the coefficient of coupling, M is the mutual inductance, L_X is the self-inductance of coil X, and L_Y is the self-inductance of coil Y.
Substituting the given values: k = (6.25μH) / √((80mH) * (60mH))

k = 6.25μH / √(4.8mH^2)

k ≈ 0.447. Therefore, the coefficient of coupling between the coils is approximately 0.447.

To learn more about inductance:

https://brainly.com/question/29981117

#SPJ11

Nano materials, which are materials with structures at the nano scale (typically below 100 nanometers), possess unique properties and behaviors that differ from their bulk counterparts. These unique properties arise due to the increased surface-to-volume ratio, quantum confinement effects, and size-dependent properties exhibited by nano materials. As a result, nano materials have the potential to enhance various physical, electrical, thermal, magnetic, and optical properties of selected materials.

Let's explore each of these areas in detail:

   Physical properties: Nano materials often exhibit improved mechanical strength, hardness, and toughness compared to bulk materials. The smaller size of nano materials allows for greater grain boundary interactions, leading to enhanced mechanical properties. Additionally, their high surface area facilitates efficient interaction with other materials, making them suitable for applications such as catalysts, sensors, and filtration membranes.

   Electrical properties:  Nano materials can exhibit unique electrical properties such as enhanced conductivity, increased charge carrier mobility, and tunable band gaps. Quantum confinement effects, arising from the quantum confinement of electrons or holes within nano scale dimensions, can modify the electronic structure and result in altered electrical behavior. This property is advantageous in fields like electronics, photovoltaic, and energy storage devices.

   Thermal properties:   Nano materials possess high thermal conductivity and can facilitate efficient heat transfer. The reduced dimensions and enhanced surface-to-volume ratio allow for better thermal management, making nano materials useful in applications like thermal interface materials, heat sinks, and thermometric devices.

   Magnetic properties:Nano materials exhibit modified magnetic properties, including enhanced magnetization, increased coercivity, and improved magnetic stability. These properties are influenced by factors such as size, shape, and composition of the nanomaterials. Such enhanced magnetic properties find applications in data storage, magnetic sensors, and biomedical devices.

   Optical properties:Nanomaterials demonstrate size-dependent optical phenomena, such as quantum confinement and surface plasmon resonance. Quantum confinement effects in nanoscale materials can lead to changes in their absorption, emission, and scattering properties, enabling the development of novel optical devices and technologies. Nanomaterials also show enhanced light-matter interactions, making them valuable for applications in sensors, displays, and optoelectronic devices.

Overall, the unique properties of nanomaterials, resulting from their nanoscale dimensions, enable the enhancement of various physical, electrical, thermal, magnetic, and optical properties of selected materials. These enhanced properties open up new opportunities for advancements in fields ranging from electronics and energy to healthcare and environmental science.

To learn more about Nano materials visit: https://brainly.com/question/1101332

#SPJ11

Answer:

Rotational inertia depends both on an object's mass and how the mass is distributed relative to the axis of rotation. ... We can't just consider the mass to be concentrated at its center of mass. When a mass moves further from the axis of rotation it becomes more difficult to change the rotational velocity of the system.So the ball with 10 pounds of the ball can have more probability to do an absolute pure rotation along rolling translation.And also the specific material from which it is made up of. As If the body is rigid have the points dont move from their position when a magnitude of force applied then the body woukd perform a well rotation than a resistantant body.

Hope it helps

Answer:

rectilinear propagation of light

reflection of light

refraction of light

Answer:

Rmains constant

Explanation:

The equation of the trajectory of a projectile motion is presented as follows;

\(Y = x \cdot tan \theta -\dfrac{g \cdot x^2}{2 \cdot u^2 \cdot cos^2 \theta}\)

The vertical componet of the prjectile motion is

y = (u·sinθ)·t - g·t²/2

Where;

θ = The angle with which the projectile is launched

x = The horizontal distance

u = The initial velocity of the projectile

g = The acceleration due to gravity = Constant

t = The time of motion

The acceleration acting on the projectile is the 'g' which is the constant acceleration due to gravity

Therefore, for general projectile motion with no air resistance, the vertical component of the projectile acceleration remains constant

Answer:

Yes, there a link between number of bulbs and current drawn from the power pack.

Explanation:

In an Electrical circuit, we have resistors present in that circuit. These resistors can be connected in two ways.

a) Series connection

b) Parallel connection

There is a link or a relationship between number of bulbs and the current drawn from the power pack. This is because the number of bulbs is equivalent to or equal to the number of resistors.

Hence,

a) In a series connection, the link or relationship between the number of bulbs(resistors) is as the number of light bulbs increases, the current in the power pack (circuit) decreases.

b) In a parallel connection, the link or relationship between the number of bulbs(resistors) is as the number of light bulbs increases, the current in the power pack (circuit) increases.

Answer:

Hiii

The answer should be B)The same matter is recycled over and over.

The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.

To plot the signal x1(t) within the time range of 0 to 0.5 seconds, we need to determine the corresponding values of x1(t) for that time range.

Given that x1(t) = 10cos(ω1t) with ω1 = 50 Hz, we can calculate the values of x1(t) using the formula.

For the time range of 0 to 0.5 seconds:
- At t = 0 seconds, x1(t) = 10cos(ω1 * 0) = 10cos(0) = 10 * 1 = 10.
- At t = 0.5 seconds, x1(t) = 10cos(ω1 * 0.5) = 10cos(25π) ≈ -7.071.

Plotting these values on the y-axis against the corresponding time values on the x-axis will give us the graph of x1(t) within the time range of 0 to 0.5 seconds.

The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.

To know more about Plotting visit:

https://brainly.com/question/15579115

#SPJ11

At the frictionless ice skating rink, a customer tries out a new exercise machine consisting of a large spring, which allows the skater to oscillate back and forth, the skater's mass is a key factor in determining the oscillation behavior of the spring-skater system.

Down at the ice skating rink, we observe a customer trying out a new exercise machine that consists of a large spring. The spring allows the skater to oscillate back and forth. Assuming frictionless ice, the skater's mass does not have an effect on the motion of the spring. The period of oscillation, which is the time it takes for one complete back-and-forth motion, depends solely on the spring constant and the mass of the skater. Specifically, the period is given by the formula T=2π√(m/k), where T is the period in seconds, m is the mass of the skater in kilograms, and k is the spring constant in newtons per meter.

Thus, a heavier skater will have a longer period than a lighter skater, assuming the spring constant remains the same. Additionally, the amplitude of the oscillation, which is the maximum displacement from the equilibrium position, may also depend on the skater's strength and technique in using the machine.

Learn more about spring oscillates back and forth: https://brainly.com/question/15969276

#SPJ11

Answer: Answer down below.

Explanation:

Answer:

Digital signals are a more reliable form of transmitting information because an error in the amplitude or frequency value would have to be very large in order to cause a jump to a different value. Signals are composed of infinite possible values. Signals are composed of only two possible values: 0 or 1.

Explanation:

Without knowing the number of atoms per meter, we cannot determine the force experienced by each electron in the wire.

Since each atom in the aluminum wire has one free electron, the charge of each electron is -e, where e is the elementary charge.

First, let's calculate the force on each electron. The charge of each electron is -e, which is approximately -1.6 x 10^-19 C. The electric field strength is given as 0.235 V/m. Substituting these values into the equation F = qE, we have F = (-1.6 x 10^-19 C) x (0.235 V/m).

Next, we can find the number of atoms per meter of the wire. To do this, we need to know the density of aluminum, the atomic mass of aluminum, and Avogadro's number. However, these values are not provided in the question, so it is not possible to calculate the number of atoms per meter.

Therefore, without knowing the number of atoms per meter, we cannot determine the force experienced by each electron in the wire.

To know more about electric field visit:

https://brainly.com/question/26446532

#SPJ11

Sphere B  reaches the bottom of the ramp first, as it has more kinetic energy.

sphere A= 7kg

sphere B=9 kg

friction force=0

height= h

kinetic energy=mv²/2

the more mass, more kinetic energy, more velocity to reach the ground.

A specific type of power that can be found in moving particles or things is called kinetic energy. When work, which entails the transfer of energy, is done on an object by applying a net force, that object accumulates kinetic energy. The mass and speed of an item or particle determine the kinetic energy, a property of motion. Any combination of vibration, axis rotation, translation, and movement is referred to as motion (along a path from one location to another). The translational kinetic energy of a body is equal to 1/2mv2, which is calculated by multiplying its mass, m, by the square of its speed, v.

To know more about  kinetic energy visit : brainly.com/question/14838079

#SPJ4

The voltage provided by the power supply = 20 V

The Voltage across resistors in series in a circuit is equal to the sum of the voltage drops across each resistor.

Therefore for two resistors in series the total voltage provided by the power supply is equivalent to the summation of the voltage drops acroos each resistor ( i.e 10 V + 10 V = 20 V )

Hence we can conclude that the voltage provided by the power supply is 20 V

Learn more about reisitors in series : https://brainly.com/question/11657573

If you filled an airtight balloon at the top of a mountain and then descended, the balloon would decrease in size due to the increase in atmospheric pressure as you moved closer to sea level.

This is because air pressure is greater at lower altitudes, causing the balloon to compress as the outside air squeezes it. As you continue to descend, the balloon will continue to shrink until it reaches a point where the pressure inside the balloon equals the pressure outside, at which point it will stop compressing.

As you descend the mountain, atmospheric pressure increases due to a higher concentration of air molecules at lower elevations. This increased pressure would cause the gas inside the balloon to compress. As a result, the airtight balloon would decrease in size during your descent.

To know more about atmospheric pressure visit:

https://brainly.com/question/28310375

#SPJ11

The maximum speed of a block of ice sliding down an incline depends on several factors, including the slope of the incline and the coefficient of friction between the block and the surface. Assuming that the incline is frictionless, the block will accelerate as it slides down the slope and reach its maximum speed at the bottom.

This is because the gravitational force acting on the block is the only force acting on it, and it gains kinetic energy as it moves down the incline. However, if there is friction between the block and the surface, the maximum speed will occur before the bottom of the incline, depending on the coefficient of friction. In general, the lower the coefficient of friction, the closer the maximum speed will be to the bottom of the incline. Therefore, the answer to the question is B) the bottom, assuming a frictionless surface, but it is difficult to predict without knowing the coefficient of friction if the surface is not frictionless.

To Learn more about block of ice sliding down. Click this!

brainly.com/question/29097939

#SPJ11

Answer:

45 m

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 0.5 kg

Initial height (h₁) = 30 m

Initial potential energy (PE₁) = 20 J

Final potential energy (PE₂) = 30 J

Final height (h₂) =?

From:

PE = mgh

PE / h = mg = constant

Thus,

PE₁ / h₁ = PE₂ / h₂

With the above formula, we can obtain the final height of the bird as follow:

Initial height (h₁) = 30 m

Initial potential energy (PE₁) = 20 J

Final potential energy (PE₂) = 30 J

Final height (h₂) =?

PE₁ / h₁ = PE₂ / h₂

20 / 30 = 30 / h₂

Cross multiply

20 × h₂ = 30 × 30

20 × h₂ = 900

Divide both side by 20

h₂ = 900 / 20

h₂ = 45 m

Therefore, the final height of the bird is 45 m.

Answer:

18 valence electrons in the 4th shell

Explanation:

1 - 2 electrons

2 - 8 electrons

3 - 8 electrons

4 - 18 electrons