For a substance to change from a gas to a liquid, what must happen to its particles?

Answer:

100%

Explanation:

Father - EE

Mother - Ee

The result would have been different with the temperature being constant if the energy transferred between the hot objects and cold water were 100%.

What is Temperature?

This is referred to as the degree of hotness or coldness of a substance or body and is influenced by thermal energy and the unit is Kelvin.

The process of heat transfer which is known as conduction is used in this process and some are lost to the environment or surroundings but in a situation where the energy transferred between the hot objects and cold water were 100% then there will be a constant temperature.

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Answer: D. It shows Newton's first law of motion, which states that an object tends to stay in motion unless an outside force acts upon it.

Explanation:

Newton's first law of motion states that an object tends to stay in motion unless an outside force acts upon it.

Answer:

I believe the answer is A, it is to the west as the right ascension is only east and west

Explanation:

When i took the quiz, I put east and had gotten it incorrect.

Answer:

Explanation:

just use the gravational force equation which is G x m of earth x m of object divided by r squared (which is radius of earth)

The properties of waves are: wavelength, time period.

Sound wave is considered a mechanical wave because it requires medium to travel.

A mechanical wave is one whose energy cannot be transmitted via a vacuum. To transfer their energy from one place to another, mechanical waves need a medium.

A mechanical wave is something like a sound wave. A vacuum can not be traversed by sound waves.

Units of time and space can be used to measure the fundamental characteristics of waves. The length between wave crests, or wavelength (L), and the time it takes a wave to pass a fixed point, or period (T), are two characteristics that can be measured directly.

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Answer:

what??!?!? the question is unclear, what exactly are you asking?

Answer:

maybe if there is an image you want to post i could help you? this is unclear. But that's okay, hope your having an okay day :)

Explanation:

The attractive force between two point charges can be calculated using Coulomb's law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Therefore, we can use the equation:

F = k * q1 * q2 / r^2

where F is the force, k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between them.

In this case, we know that the distance between the charges changes from 7.0 cm to 12 cm. Therefore, we can use the equation to find the new force:

F' = k * q1 * q2 / (12 cm)^2

To solve for F', we need to know the values of k, q1, and q2. Unfortunately, these values are not provided in the question. Therefore, we cannot give an exact answer to this question.

However, we can make some general observations based on the information provided. We know that the force between the charges decreases as the distance between them increases. Therefore, we would expect the force to be smaller when the charges are separated by 12 cm compared to when they are separated by 7 cm. Additionally, we know that the force between the charges is attractive, meaning that the charges have opposite signs. If the charges were of the same sign, the force would be repulsive.

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Answer:

c and d

Explanation:

The wave shown in the figure is Sound waves. The sound wave is a mechanical wave. Hence, options C and D are correct.

Sound is traveled by means of vibrations of particles in the medium. Sound waves require a medium to propagate. The energy propagation by means of adiabatic loading and unloading is called sound or acoustic waves.

The sound waves produce compression and rarefaction in the air. The sound waves are called Longitudinal waves because the direction of propagation is parallel to the vibration of particles.

Sound waves are considered only as waves because they exhibit a wave nature. Light has both properties of wave and particle. Light is an electromagnetic wave and it is transverse in nature.

The sound waves require a medium like air, water, solids, etc for propagation. Hence it is called Mechanical waves. Light waves do not require a medium to propagate. From the given wave pattern,  it exhibits the property of sound waves.

Hence, the correct option is C) the wave is a mechanical wave, and D) the wave could be transmitting sound.

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The magnetic force on each side of the wire loop is 0.872 N, due to the interaction with the magnetic field.

To calculate the magnetic force on each side of the wire loop, we can use the formula F = I * L * B * sin(θ), where F is the magnetic force, I is the current, L is the length of the wire segment, B is the magnetic field strength, and θ is the angle between the wire and the magnetic field.

In this case, the current (I) is 6.7 A, the length of each side (L) is 11 cm (0.11 m), and the magnetic field strength (B) is 9.1 T. The angle (θ) between the wire and the magnetic field is 90 degrees, as the field is perpendicular to the hypotenuse.

Plugging in these values into the formula, we get F = 6.7 * 0.11 * 9.1 * sin(90°) = 0.872 N. Therefore, the magnitude of the resulting magnetic force on each side of the wire loop is 0.872 N.

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Answer:

B

Explanation:

if the object has momentum it can be any other answer except at rest. if it's at rest, it does not have momentum

Answer:

I'M SORRY I CAN'T SEE THE PICTURE BUT IT WILL MOST LIKELY BE THE DIFFERENCE BETWEEN THE NUMBERS

Explanation:

for instance if there was someone pushing a desk with a net force of 9 towards the right, the net force would come to a total of 9 since there is no one on the other side pushing the desk. Meaning the desk would go right. I'm sorry if this isn't what you needed D:

When all other factors are constant, the initial velocity determines the length of a projectile's trajectory.

A projectile is an object that is thrown or projected into the air and follows a path determined by the forces of gravity and air resistance. The length of a projectile's trajectory is determined by the time it takes for the projectile to reach its maximum height and the time it takes for the projectile to return to the ground. Initial velocity is the velocity at which a projectile is launched, and it determines the initial speed and direction of the projectile.

The greater the initial velocity, the farther the projectile will travel before hitting the ground, this is because the projectile spends less time in the air, so it has less time to slow down due to air resistance. In contrast, a projectile with a lower initial velocity will travel a shorter distance because it spends more time in the air and slows down more due to air resistance. Therefore, the initial velocity is a crucial factor that determines the length of a projectile's trajectory.

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Advandages:

1. Every unit that is connected in a parallel circuit gets equal amount of voltage.

2. It becomes easy to connect or disconnect a new element without affecting the working of other elements.

3. If any fault happened to the circuit, then also the current is able to pass through the circuit through different paths.

Disadvantages:

1. It requires the use of lot of wires.

2. We cannot increase or multiply the voltage in a parallel circuit.

3. Parallel connection fails at the time when it is required to pass exactly same amount of current through the units.

A 100kg crate slides along a floor with a starting velocity of 21 m/s. If the force due to friction is 8N, then, it will take 262.5 s for the box to come to rest.

We'll begin by calculating the declaration of the box. This can be obtained as follow:

Force (F) = –8 N (opposition)

Mass (m) = 100 Kg

–8 = 100 × a

Divide both side by 1000

\(a = \frac{-8}{100}\)

Therefore, the deceleration of the box is –0.08 ms¯²

Finally, we shall determine the time taken for the box to come to rest. This can be obtained as follow:

Deceleration (a) = –0.08 ms¯²

Initial velocity (u) = 21 ms¯¹

Final velocity (v) = 0 ms¯¹

0 = 21 + (–0.08×t)

0 = 21 – 0.08t

Collect like terms

0 – 21 = –0.08t

–21 = –0.08t

Divide both side by –0.08

\(t = \frac{-21}{-0.08}\\\\\)

Therefore, it will take 262.5 s for the box to come to rest.

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To determine which part of the electromagnetic (EM) spectrum a photon belongs to, we can convert its energy from joules to electron volts (eV) and then use Figure 10.7 in the textbook to identify the corresponding type of photon.

One electron volt is defined as the energy gained or lost by an electron when it is accelerated through a potential difference of one volt. The conversion factor between joules and electron volts is 1 eV = 1.60218 x 10^(-19) J.

Once we have the energy of the photon in electron volts, we can refer to Figure 10.7 in the textbook or any other reliable source to determine the type of photon associated with that energy.

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The approximate temperature of the Sun's corona is over a million degrees Kelvin (MK), which is much hotter than the surface temperature of 6000 K.

The temperature of the Sun's corona is much hotter than its surface temperature. While the surface of the Sun has a temperature of around 6000 K, the corona can reach temperatures of over a million degrees Kelvin (MK). The exact reason for this extreme heating is still a topic of research and debate among scientists, but some theories suggest that it may be related to magnetic fields and plasma processes in the Sun's outer atmosphere.

The surface temperature of the Sun, which is approximately 6000 K, refers to the temperature of its outer layer called the photosphere. However, the temperature of the Sun's corona, which is the outermost layer, is significantly higher. The approximate temperature of the Sun's corona is between 1 to 3 million K.

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The temperature of the Sun's corona, which is the outermost layer of its atmosphere, is much hotter than the surface temperature.

The approximate temperature of the corona is around 1-3 million Kelvin (K).

The reason for this high temperature is not yet fully understood, but there are some possible explanations that scientists have proposed.

One such explanation is related to the Sun's magnetic field.

The corona is filled with plasma, which is made up of charged particles such as ions and electrons.

The Sun's magnetic field interacts with this plasma, causing it to be heated and accelerated to high velocities.

This heating occurs through a process called magnetic reconnection, which converts magnetic energy into thermal energy.

Another possible explanation is related to the waves that propagate through the Sun's atmosphere.

These waves can carry energy to the corona, heating it up in the process.

This heating occurs through a process called wave heating, where the energy of the waves is converted into thermal energy.

Despite much research, the exact mechanisms responsible for the heating of the corona are not yet fully understood.

However, continued studies and observations of the Sun's atmosphere will help scientists to gain a better understanding of this complex and fascinating phenomenon.

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Decrease

The mathematical relationship between heat, internal energy and work done by the system is given as:

△U = Q + W

where △U is the change in the internal energy

W is the workdone by the system

Q is the heat energy in the system

Since the workdone by the system is negative, when a system does work, there is a depletion in the amount of energy possessed by the system.

Due to this loss of energy by the system as a result of the workdone, the internal energy decreases.

The water outflow in 30 secs through 200 mm of the capillary tube is mathematically given as

\(Qo=1.6 \times 10^{2} \mathrm{~mL}\)

\(\begin{aligned}\Delta P &=6660 \mathrm{~m} / \mathrm{m}^{2} \\\mu &=8.01 \times 10^{-4} \text { Pas } \\t &=30 \mathrm{~s} \\L &=200 \mathrm{~mm}=200 \times 10^{-3} \mathrm{~m} \\D &=1.5 \mathrm{~mm}=1.5 \times 10^{-3} \mathrm{~m} \Rightarrow \gamma=\frac{1.5 \times 10^{-3}}{2} \mathrm{~m}\end{aligned}\)

Generally, the equation for Rate of flow of Liquid is  mathematically given as

\(\\$$Q=\frac{\pi r^{4} \times \Delta P}{8 \mu L}\)

$$

Where dP is pressure difference r is the radius

\(\mu\) is the viscosity of water

L is the length of the pipe

\(Q=\frac{\pi \times\left(\frac{1.5 \times 10^{-3}}{2}\right)^{4} \times 6660}{8 \times 8.01 \times 10^{-4} \times 200 \times 10^{-3}}\)

\(Q=5.2 \mathrm{~mL} / \mathrm{s}\)

In $30s the quantity that flows out of the tube

\(&Qo=5.2 \times 30 \\&Qo=1.6 \times 10^{2} \mathrm{~mL}\)

In conclusion, the quantity that flows out of the tube

\(Qo=1.6 \times 10^{2} \mathrm{~mL}\)

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The first step in performing manual lensometry or keratometry is to option a. Focus the eyepiece.

1. Focus the eyepiece: Start by adjusting the eyepiece until the reticle lines appear sharp and clear. This ensures accurate measurements during the lensometry or keratometry process.
2. Position the eyeglasses (for lensometry): Place the eyeglasses on the lensometer's lens holder, ensuring the lens is centered on the instrument.
3. Position the instrument (for keratometry): Ensure the keratometer is correctly positioned and aligned with the patient's eye for accurate corneal curvature measurements.
4. Perform the lensometry or keratometry measurements: Follow the specific steps for each instrument to obtain the necessary measurements, such as lens power or corneal curvature.

By following these steps, we perform manual lensometry or keratometry effectively.

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Centric forces tend to promote linear or straight-line movement, while eccentric forces tend to promote rotational or angular movement.

Centric and eccentric forces are terms used in the context of muscle movement and contraction. Centric forces refer to forces that act along the longitudinal axis of a bone, causing linear motion of the bone. These forces are typically produced by the contraction of muscles that cross the joint perpendicular to its axis. An example of a centric force would be the contraction of the biceps muscle to lift a weight. Eccentric forces, on the other hand, refer to forces that act on a bone in a direction perpendicular to its longitudinal axis, causing rotational or angular motion of the bone.

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Answer:

Gpe = 30000J

Explanation:

Given the following data;

Weight = 100N

Height = 300m

To find the gravitational potential energy (gpe);

Gravitational potential energy can be defined as an energy possessed by an object or body due to its position above the earth surface.

Mathematically, potential energy is given by the formula;

\( G.P.E = mgh\)

Where,

G.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.

Gpe = mgh

But weight = mg = 100N

Substituting into the equation, we have:

Gpe = 100*300

Gpe = 30000J

When the current in a certain fuse exceeds 1.0 A, the fuse blows and melts. This means that the fuse cannot handle the high current and has reached its breaking point.

The melting of the fuse is due to the heating effect of the current passing through it. The higher the current, the more heat is generated and the quicker the fuse will melt.

The distance that the fuse melts is dependent on various factors, such as the material of the fuse and the current passing through it. In this case, we are given a few options for the distance the fuse melts, which are 0.63 mm and 0.91 mm.

It is important to note that if the current passing through the fuse is slightly above the limit of 1.0 A, the fuse may not immediately blow and melt. However, if the current remains high, the fuse will eventually reach its breaking point and melt.

It is crucial to use the correct fuse for a circuit to prevent damage or even dangerous situations. Fuses are designed to protect the circuit by blowing and melting when the current exceeds a certain limit. By doing so, they prevent damage to the circuit and any connected devices.

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Explanation:

At first it is in 14m position but position doesn't matter in displacement, similar case for time taken.

So at first it travels 6m in positive direction.

So displacement= 6m

Then it travels 13 in opposite or negative direction.

So displacement = 6 -13 m = -7 m

Hope it helps ya

You're standing in the lobby of a huge building.

You go up 6 floors.

You stop and catch your breath.

You go down 13 floors.

Where do you end up ?

Answer:

radio waves

microwaves

The power rating of the device is 96 watts. This means that the device consumes 96 watts of power when it is connected to a 120-volt source.

The voltage and current values can be measured using a voltmeter and an ammeter, respectively.

To calculate the power rating of a device, we can use the formula:

Power (in watts) = Voltage (in volts) x Current (in amperes)

In this case, the device draws 0.8 A when connected to 120 V. Using the formula above, we can calculate the power rating as:

Power = 120 V x 0.8 A = 96 watts

The power rating is an important specification for electrical devices, as it indicates how much power the device will consume when it is in use.

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Answer:

11m/s^2

Explanation:

Acceleration can be calculated by diving speed by time. Since we know speed and time, acceleration can be calculated.

55/5 = 11m/s^2

The intensity of sound is inversely proportional to the square of the distance from the source. The intensity of sound at 4 m away from the source is approximately \(0.993W/m^{2}\) (watts per square meter).

The intensity of sound is defined as the power per unit area. According to the inverse square law for sound propagation, the intensity of sound is inversely proportional to the square of the distance from the source. Mathematically, it can be expressed as

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

where I is the intensity, P is the power, and r is the distance from the source.

Given that the power of sound at the source outlet is 100 W and the distance from the source is 4 m, we can substitute these values into the formula. Thus, we have

\(I = 100 W / (4\pi (4 m)^2)\)

Simplifying this expression, we find that the intensity of sound at 4 m away from the source is approximately \(0.993W/m^{2}\) (watts per square meter).

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When a ball is shot straight up into the air from the ground with initial velocity of 49ft/sec. assuming that the air resistance can be ignored, the maximum height that the ball goes up will be 73.96 ft.

This can be determined by using the kinematic equations for constant acceleration. The kinematic equation that relates the displacement, initial velocity, acceleration, and time is given by:

S = ut + 1/2 at²

where, S is the maximum height the ball goes up, u is the initial velocity of the ball, a is the acceleration of the ball, t is the time taken by the ball to reach maximum height.

Now, the initial velocity of the ball is u = 49 ft/s (given). Since the ball is thrown upwards, the acceleration of the ball will be downwards, i.e., a = -32.2 ft/s² (taken as negative since it is in the opposite direction to the motion)

At maximum height, the final velocity of the ball will be zero. Hence, using the equation, v = u + at, at maximum height, v = 0 and u = 49 ft/s, a = -32.2 ft/s²

Substituting these values in the equation,

v = u + at0

= 49 - 32.2*t

t = 1.52 s.

Now, substituting u, a, and t in the equation,

S = ut + 1/2 at²

S = 49(1.52) + 1/2 (-32.2)(1.52)²

S = 73.96 ft

Therefore, the maximum height that the ball goes up is 73.96 ft.

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246.5ft.

The ball shot straight up into the air with an initial velocity of 49ft/sec will reach a maximum height, before it begins to fall back to the ground. Assuming no air resistance, the ball will reach a maximum height of 246.5ft.

To calculate this, use the formula h = (vi2) / (2g), where vi is the initial velocity and g is the acceleration due to gravity (g = 9.8m/s2).

Plugging in the values given, we get: h = (49ft/sec)2 / (2 * 9.8m/s2) = 246.5ft.

Therefore, the ball will reach a maximum height of 246.5ft.

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