What is the frequency of red light, which has a wavelength of around 6. 35 * 10 ^ 7 - 7 m? (Remember: speed of light is 3*10^ 1 8 m/s) Be sure to show all work

Answer:

Explanation:

To calculate the energy density of the wire, we need to first calculate the strain energy stored in the wire.

The strain energy stored in the wire can be calculated using the formula:

U = (1/2) * F * deltaL

where U is the strain energy, F is the applied force, and deltaL is the change in length of the wire.

Here, the applied force is 200 N, and the change in length of the wire is 1.5 mm = 0.0015 m.

So, the strain energy stored in the wire is:

U = (1/2) * 200 N * 0.0015 m = 0.15 J

Now, we need to calculate the volume of the wire to determine the energy density.

The volume of the wire can be calculated using the formula for the volume of a cylinder:

V = pi * r^2 * L

where V is the volume, r is the radius, and L is the length of the wire.

Here, the radius of the wire is 1 mm = 0.001 m, and the length of the wire is 10 m.

So, the volume of the wire is:

V = pi * (0.001 m)^2 * 10 m = 7.853 x 10^-6 m^3

Finally, we can calculate the energy density of the wire using the formula:

Energy density = Strain energy / Volume

Energy density = 0.15 J / 7.853 x 10^-6 m^3

Energy density = 19,102,077.34 J/m^3

Therefore, the energy density of the copper wire is 19,102,077.34 J/m^3.

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When a neutral balloon is rubbed on your hair, the balloon becomes negatively charged because it gains electrons from your hair. The process of triboelectric charging occurs because of the difference in the materials' ability to give up or gain electrons.

When you rub an electrically neutral balloon on your hair, some electrons are transferred from your hair to the surface of the balloon. As a result, the balloon becomes negatively charged, and your hair becomes positively charged.

This is because electrons are negatively charged particles, and when they move from one object to another, the object that loses electrons becomes positively charged, and the object that gains electrons becomes negatively charged.

The process of transferring electrons from one object to another through friction is called triboelectric charging, and it occurs because some materials have a stronger tendency to give up electrons, while others have a stronger tendency to gain electrons.

In summary, when a neutral balloon is rubbed on your hair, the balloon becomes negatively charged because it gains electrons from your hair. The process of triboelectric charging occurs because of the difference in the materials' ability to give up or gain electrons.

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Vdst and Vdsq are different measurements of the voltage drop across the drain-source terminals of a MOSFET transistor, and to find Vdsq from Vdst, we need to measure Vdst and use a formula that takes into account Vgs and Vth.

To understand how to find Vdsq from Vdst, we need to first understand what these terms represent.

Vdst is the voltage drop across the drain-source terminals of a MOSFET transistor when it is in its ON state. This voltage drop is caused by the current flowing through the transistor, and it is a dynamic value that changes as the current changes.

Vdsq, on the other hand, is the voltage drop across the drain-source terminals of a MOSFET transistor when it is in its steady-state or quiescent state. This voltage drop is caused by the biasing of the transistor and is a static value that remains constant as long as the biasing conditions remain the same.

To find Vdsq from Vdst, we need to first measure the value of Vdst while the transistor is in its ON state. This can be done using a multimeter or an oscilloscope. Once we have the value of Vdst, we can then calculate Vdsq using the following formula:

Vdsq = Vdst + Vgs - Vth

where Vgs is the voltage applied to the gate of the transistor and Vth is the threshold voltage of the transistor.

As for how the value of 7 for Vdsq was found, it is impossible to say without more context. It could have been calculated using the formula above, or it could have been measured using experimental methods.

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The torque needed to keep the stick steady, ranked from largest to smallest, would be: highest when the suspended mass is at the far end of the stick, lower when the suspended mass is closer to the pivot point, and lowest when the suspended mass is at the pivot point itself.

To rank the torque needed to keep the stick steady from largest to smallest, we need to consider the factors that affect torque.

Torque is the rotational equivalent of force, and it depends on the distance between the pivot point (the end of the meter stick you are holding) and the point where the force is applied (the suspended mass), as well as the magnitude of the force.

In this scenario, the torque needed to keep the stick steady will be highest when the suspended mass is at the far end of the stick, i.e. as far away from the pivot point as possible.

This is because the greater the distance between the pivot point and the force, the more torque is required to counteract the force's rotational effect. Therefore, the torque needed to keep the stick steady will be highest when the suspended mass is at the end of the meter stick farthest away from the pivot point.

Conversely, the torque needed to keep the stick steady will be lowest when the suspended mass is at the pivot point itself, as there is no rotational effect to counteract in this scenario.

Therefore, the torque needed to keep the stick steady will be lowest when the suspended mass is at the end of the meter stick closest to the pivot point.

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The minimum amplitude of vibration that must be used in the test is 0.0312 m.

The maximum acceleration experienced by the computer will occur at the maximum displacement from the equilibrium position, which is equal to the amplitude of vibration (A). The maximum acceleration (a) is given by:

a = -4π²f²A

where f is the frequency of vibration.

To withstand 22 times the acceleration due to gravity (g), the amplitude of vibration must satisfy:

A >= 22g / (4π²f²)

Substituting g = 9.8 m/s² and f = 8.30 Hz, we get:

A >= 22(9.8) / (4π²(8.30)²) = 0.0312 m

As a result, the minimum amplitude of vibration required for the test is 0.0312 m.

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It will take approximately 6.89 × 10^-5 seconds (or 68.9 microseconds) for the water to boil.

To determine how long it will take for the water to boil, we need to consider the decay of the radium isotope and calculate the time it takes for the heat released from the radioactive decay to raise the temperature of the water to its boiling point.

First, let's calculate the number of radium atoms in the 1.0 g cube of 223Ra. To do this, we'll use the molar mass of radium-223 (223 g/mol) and Avogadro's number (6.022 × 10^23 atoms/mol):

Number of radium atoms = (1.0 g) / (223 g/mol) × (6.022 × 10^23 atoms/mol)

= 2.69 × 10^21 atoms

Each radium-223 atom decays by emitting an alpha particle (helium nucleus) and transforms into a different element over time. The energy released during this decay process contributes to heating the surrounding environment.

Now, we need to calculate the total energy released by the decay of the 2.69 × 10^21 radium atoms. The energy released per decay of radium-223 is approximately 5.69 MeV (million electron volts).

Total energy released = (2.69 × 10^21 atoms) × (5.69 MeV/atom) × (1.6 × 10^-13 J/MeV)

= 2.44 × 10^9 J

Next, we need to calculate the specific heat capacity of water. The specific heat capacity of water is approximately 4.18 J/g⋅°C.

To raise the temperature of the water from 16°C to its boiling point, we need to calculate the amount of heat required:

Heat required = (460 mL) × (1 g/mL) × (4.18 J/g⋅°C) × (100°C - 16°C)

= 1.68 × 10^5 J

Now, we can determine the time required for the water to reach its boiling point. We divide the heat required by the total energy released per second:

Time required = (1.68 × 10^5 J) / (2.44 × 10^9 J/s)

≈ 6.89 × 10^-5 s

Therefore, it will take approximately 6.89 × 10^-5 seconds (or 68.9 microseconds) for the water to boil.

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The observed reduction in the volume of the salt solution after shaking suggests that the added water was able to dissolve the salt, resulting in a more compact solution.

A solution is a homogeneous mixture made up of two or more substances that are evenly distributed at a molecular or ionic level. The substance that is present in the largest amount is called the solvent, and the substances that are dissolved in it are called solutes. The solutes can be gases, liquids, or solids.

The process of forming a solution involves the solute particles being surrounded by the solvent particles, which causes the solute particles to become evenly distributed throughout the solvent. The attractive forces between the solvent and solute molecules or ions play a crucial role in determining the concentration of the solution.

Solutions can have a wide range of properties, such as color, density, boiling and melting points, and electrical conductivity, which depend on the identity of the solutes and the solvent. Solutions are an essential part of many chemical, biological, and industrial processes, and understanding their properties and behavior is crucial in many fields of science and technology.

Here in this Question, When salt is added to water, it dissolves to form a saltwater solution. However, the addition of more water than the solubility of salt causes some of the salt to remain undissolved at the bottom of the flask. When the flask is shaken, the salt particles that were initially undissolved become suspended in the solution due to the agitation, thereby reducing the volume of the solution. This is because the suspended particles take up space in the solution, which was initially occupied by the water molecules.

Therefore, The observed decrease in salt solution volume after shaking indicates that the salt was able to dissolve in the additional water, resulting in a more compact solution.

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Concave mirrors in The Mirror Equation. When objects are positioned at a specific location in front of a concave mirror, ray diagrams can be used to establish the image location, size, orientation, and type of image created. Here the distance between the image and the mirror is -8.6 cm. The correct option is D.

In order to retrieve the numerical data on image size and distance that ray diagrams are unable to offer, the Mirror formula is applied. The link between the object distance (v), image distance (u), and focal length (f) is also established by the Mirror formula.

The mirror formula is given as:

1/v + 1/u = 1/f

Based on the distance it is:

1 / f = 1 / d₂ - 1 / d₁

1 / 12 = 1 / v + 1 / 5.0

1 / v = - 7 / 60

d₂ = -8.6 cm

Thus the correct option is D.

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Saturn's shepherd moons are small, icy moons that orbit the planet near its rings. The shepherd moons help maintain the stability of Saturn's rings by exerting a gravitational tug on the particles that constitute the rings.

This creates a gravitational force that counteracts the disruptive force of the particles' collisions with each other, keeping them in place instead of allowing them to spread out or collapse.

Additionally, the shepherd moons help to keep the rings confined within a certain distance from Saturn. The shepherd moons also help to keep the rings from becoming too thin by helping to keep the particles in the rings in a more compacted formation. The shepherd moons of Saturn are thus crucial for the stability of the planet's rings.

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Bumper cars are a popular ride at fairs and amusement parks, designed for riders to bump into each other while driving around. When two bumper cars move towards each other, there are two factors that affect the momentum of each car.

The first factor is the mass of the car. The heavier the car, the more momentum it has. So, a heavier bumper car will be harder to stop and will have more force when it hits another car. The second factor is the speed of the car. The faster a car is moving, the more momentum it has.

Therefore, if two cars are moving at the same speed, they will have equal momentum. However, if one car is moving faster than the other, it will have more momentum and cause a greater impact when it collides.

When two bumper cars crash into each other, both cars come to a stop. This is due to the law of conservation of momentum. This law states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision.

In this case, the two bumper cars collide and their momentum is transferred to each other, causing both cars to come to a stop.

When the cars collide, the force of the impact causes the cars to stop. The cars' kinetic energy is transferred to other forms of energy, such as heat and sound.

Additionally, the cars' bumpers are designed to absorb some of the impact, which also helps to slow the cars down and prevent injury to the riders.

In conclusion, the momentum of a bumper car is affected by its mass and speed. When two cars collide, they come to a stop due to the law of conservation of momentum. The force of the impact and the design of the bumpers also play a role in the cars' deceleration.

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Answer:

According to the only context given, the correct answer is induction.

The sound wave moved at a speed of about 170.59 m/s.

Echoes. An echo is a sound that is reproduced when sound waves are reflected back. Sound waves can also reflect off smooth, hard surfaces, much to way a rubber ball does. The echo sounds the same as the original sound, despite the fact that the sound's direction changes.

Time for sound to reach the mountain and bounce back = 2 x 1.7 s = 3.4 s

The distance traveled by the sound wave is twice the distance between the hiker and the mountain, so:

Distance = (580 m x 2 x 290 m)

Using the formula:

Speed = Distance / Time

we get:

Speed = 580 m / 3.4 s = 170.59 m/s

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The given statement "convection drives movement of the tectonic plates which does not involve subduction" is false because tectonic plate movement caused by mantle convection involves subduction.

Convection plays a crucial role in driving the movement of tectonic plates, which includes subduction. The Earth's mantle is divided into several convection cells that transfer heat and matter from the interior of the Earth towards the surface.

As the hotter material rises towards the surface, it displaces colder and denser material, which sinks back down into the interior. This convection cycle causes the movement of tectonic plates, as the plates are essentially riding on top of the flowing mantle.

Subduction occurs when one tectonic plate is forced beneath another due to differences in density and temperature. This process is driven by the movement of the plates themselves, which in turn is driven by the underlying convection currents in the mantle.

In summary, the movement of tectonic plates is driven by convection currents in the mantle, and subduction is one of the important processes involved in this movement.

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The principle of superposition can be used to determine the net effect of multiple individual effects on a physical system. It is a fundamental principle in physics and is used to analyze the behavior of waves, electric and magnetic fields, and other physical phenomena.

In essence, the principle of superposition states that when two or more waves, forces, or fields interact with each other, the net effect is the sum of the individual effects of each wave, force, or field.

This principle applies to both linear and nonlinear systems, and it is a crucial tool for understanding complex physical systems.

For example, the principle of superposition can be used to determine the resulting wave pattern when two or more waves of different frequencies, amplitudes, and directions interact with each other. It can also be used to calculate the net electric or magnetic field at a given point in space due to multiple charges or currents.

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The centripetal acceleration experienced by an object moving in a circle is given by the formula:

a = v²/r

where a is the centripetal acceleration, v is the speed of the object, and r is the radius of the circle.

In this problem, we are given that the object has a mass of 20 g, which we need to convert to kilograms:

m = 20 g = 0.02 kg

We are also given that the object is moving in a horizontal circle of radius 250 cm at a speed of 50 cm/s. We need to convert these measurements to SI units (meters and seconds) to use the formula for centripetal acceleration:

r = 250 cm = 2.5 m

v = 50 cm/s = 0.5 m/s

Now we can calculate the centripetal acceleration:

a = v²/r = (0.5 m/s)² / 2.5 m = 0.1 m/s²

Therefore, the centripetal acceleration experienced by the object is 0.1 m/s².

Based on the given information, the diver with a mass of 450 N standing at a height of 20 feet has more gravitational potential energy.

Gravitational potential energy can be calculated using the formula: PE = mgh, where PE represents potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height above a reference point.

In this case, the diver with a mass of 450 N at a height of 20 feet has a greater mass, resulting in a higher gravitational potential energy compared to the diver with a mass of 400 N at the same height.

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The correct answer is: (d) i.e. halve

If Judy doubles the frequency at which she oscillates the spring, the wavelength in the spring will halve. This is because the wavelength of a wave is inversely proportional to its frequency, meaning that as the frequency doubles, the wavelength must halve in order to maintain a constant wave speed.

Wavelength and frequency are related by the relation

                                                        L = v/f

where L= Wavelength

v = speed of the wave

f = frequency and therefore wavelength is inversely proportional to the frequency of the wave and when frequency doubles, wavelength must be halved.

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The observer hears a frequency of 374 Hz when the car is approaching and 293 Hz when it is moving away.

The frequency of sound heard by an observer is affected by the motion of the source of the sound relative to the observer. This effect is known as the Doppler effect. The Doppler effect can be described by the equation: f' = f (v±vo)/(v±vs)

where f is the frequency of the sound emitted by the source, v is the speed of sound, vo is the speed of the observer, and vs is the speed of the source. The ± sign is positive when the source is moving toward the observer and negative when it is moving away.

(a) When the car is approaching, the frequency of sound heard by the observer is higher than the frequency emitted by the car. Applying the Doppler effect equation, we get: f' = f (v+vo)/(v+vs), f' = 320 Hz (343 m/s + 0)/(343 m/s - 35.0 m/s), f' = 374 Hz

(b) When the car is right next to the observer, the frequency of sound heard by the observer is the same as the frequency emitted by the car. This is because there is no relative motion between the observer and the source.

(c) When the car is moving away, the frequency of sound heard by the observer is lower than the frequency emitted by the car. Applying the Doppler effect equation, we get:

f' = f (v-vo)/(v-vs)

f' = 320 Hz (343 m/s - 0)/(343 m/s - 35.0 m/s)

f' = 293 Hz

Therefore, the observer hears a frequency of 374 Hz when the car is approaching and 293 Hz when it is moving away.

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Transparent materials are preferred for magnifying glasses because they allow light to pass through, resulting in clear and accurate images with natural colors. The quality of the material used is also important for achieving clarity and preventing distortion.

Magnifying glasses are typically made from transparent materials such as glass or plastic because they need to allow light to pass through them to form an image. When light passes through a transparent material, it refracts or bends, which is what allows the lens to focus the light onto a small point.

The quality of the material used to make the magnifying glass is important as it affects the clarity and sharpness of the image produced. The material should be free from impurities and scratches to prevent distortion of the image.

Transparent materials are also preferred for magnifying glasses because they allow us to see the object being magnified in its natural colors. If the material were opaque, the colors would be distorted or blocked altogether, making it difficult to see the object clearly. Overall, using transparent materials for magnifying glasses allows for clear, sharp images with accurate colors, making them ideal for a wide range of applications.

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You can get 30.0 meters away from your little brother if you travel at a speed of 3.0 m/s for 10.0 seconds.

To solve this problem, we can use the formula:

distance = speed x time

Given, your speed is 3.0 m/s and you have 10.0 s to get away from your little brother. Using the formula, we get:

distance = 3.0 m/s x 10.0 s = 30.0 m

Therefore, you can get 30.0 meters away from your little brother if you travel at a speed of 3.0 m/s for 10.0 seconds. However, keep in mind that your little brother may also be able to run or move at a certain speed, so this distance may not guarantee complete safety.

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Meteorologists use weather data to predict the probability of a catastrophic wildfire by analyzing several factors that contribute to fire risk. Here are some of the ways they do this:

1. Temperature: High temperatures can increase the risk of wildfires as they cause vegetation to dry out and become more flammable. Meteorologists track temperature changes to identify periods of high risk.

2. Humidity: Low humidity levels also contribute to an increased risk of wildfires. This is because dry air can cause vegetation to dry out more quickly. Meteorologists monitor humidity levels to help predict fire risk.

3. Wind speed and direction: Strong winds can rapidly spread wildfires, and wind direction can also influence the direction in which a fire spreads.

Meteorologists track wind speed and direction to help predict the potential spread of a wildfire.

4. Precipitation: Rain and other forms of precipitation can reduce the risk of wildfires by providing moisture to vegetation.

Meteorologists monitor precipitation patterns to predict how dry or moist the vegetation will be, which can affect fire risk.

5. Drought: Long periods of drought can increase the risk of wildfires by creating dry conditions. Meteorologists monitor drought conditions to predict fire risk.

By analyzing these weather factors, meteorologists can create models to predict the probability of a catastrophic wildfire.

They can also issue warnings and alerts to help people prepare for and respond to these events.

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The charge of the other sphere is approximately 5.70 x 10^-17 C.)

To find the charge of the other sphere, we can use Coulomb's law, which states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. In this case, we have:

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

where F is the force between the spheres, k is Coulomb's constant, q1 is the charge of one sphere, q2 is the charge of the other sphere, and r is the distance between the spheres.

We are given F, q1, and r, and we can look up the value of k (which is approximately 9 x 10^9 N m^2/C^2). Rearranging the equation, we get:

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

Plugging in the values, we get:

q2 = (1.40 x 10^-14 N * (0.43 m)^2) / (9 x 10^9 N m^2/C^2 * 1.68 x 10^-17 C)

q2 = 5.70 x 10^-17 C

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A person's strength, speed, power, agility, flexibility, and endurance are all increased with cross training, which also helps to reduce the chance of injury.

Cross-training is the technique of preparing employees to perform duties that go outside of their typical responsibilities or to work in multiple different jobs. For instance, cross-training could be used to teach someone who works in collections how to work in billing, and the other way around.

This is based on the finding that strengthening one limb while exercising the opposite limb results in a phenomena known as cross-training, also known as the contralateral strength training effect.

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True. Cross training is a type of training routine that combines two or more different exercises into a workout to prevent injuries, burnout, and overuse.

What is the cross-training training method?

Cross-training is the technique of preparing employees to perform duties that go outside of their typical responsibilities or to work in multiple different jobs. For instance, cross-training could be used to teach someone who works in collections how to work in billing, and the other way around.

A piece of cardio training equipment is a cross trainer, commonly referred to as an elliptical trainer. It is a fantastic full-body exercise and works your arms and legs at the same time. Cross training and a cross trainer are very different from one another, however a cross trainer can play a significant role in a cross training regimen.

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The best measurements of the mass of the black hole at the center of the Milky Way galaxy come from observations of the orbits of stars and gas clouds near the galactic center.

In particular, astronomers have been able to observe the motion of stars and gas clouds that are very close to the center of the galaxy, within a few light-days of the suspected black hole.

By measuring the speed and direction of these objects, and analyzing their orbital trajectories, scientists can calculate the gravitational force required to keep them in orbit. The size of this force depends on the mass of the central object, which is likely to be a black hole.

Through this method, astronomers have estimated that the black hole at the center of the Milky Way, known as Sagittarius A*, has a mass of about 4 million times that of the sun.

This estimate has been refined and confirmed over several years of observations, and is currently the most accurate measurement of the mass of a supermassive black hole.

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The experiment involves comparing the temperatures of two thermometers placed in different atmospheric compositions and exposed to radiant energy. The goal is to track the amount of radiant energy absorbed by each atmosphere over a period of 30 minutes.

Part B of the experiment involves performing the actual experiment by following the given directions.:

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The momentum of one 300-series Shinkansen train at its top speed of 270 km/h is 1.93 x[tex]10^{8}[/tex] kg*m/s.

Whast is Mass?

Mass is a fundamental physical property of matter that quantifies the amount of matter in an object. It is a scalar quantity that measures the resistance of an object to a change in its motion or acceleration, and is typically measured in units of kilograms (kg) in the International System of Units (SI).

The momentum (p) of an object can be calculated using the formula p = mv, where m is the mass of the object and v is its velocity. The mass of the 300-series Shinkansen train is given as 7.10 x [tex]10^{5}[/tex] kg. To calculate its momentum, we need to convert the velocity of 270 km/h to m/s. 270 km/h is equivalent to 75 m/s. Therefore, the momentum of one 300-series Shinkansen train at its top speed is:

p = mv = 7.10 x [tex]10^{5}[/tex] kg x 75 m/s = 1.93 x [tex]10^{8}[/tex] kg*m/s

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The molar specific heat of a diatomic gas measured at constant volume and found to be 29.1 J/mol·K indicates that the types of energy contributing to the molar specific heat are: (b) translation and rotation only.

This is because diatomic molecules have 5 degrees of freedom: 3 translational and 2 rotational. The molar specific heat at constant volume (Cv) can be calculated using the formula Cv = (f/2)R, where f is the degrees of freedom and R is the gas constant (8.314 J/mol·K).

For diatomic molecules with 5 degrees of freedom, Cv = (5/2)R = 20.785 J/mol·K. However, given the value of 29.1 J/mol·K, it is close to the expected value of (7/2)R = 29.09 J/mol·K, which represents the 3 translational and 2 rotational degrees of freedom without including vibrational energy.

Thus, only translation and rotation are contributing to the molar specific heat in this case.

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Answer:

Explanation:

C

In charging by induction, a charged object is brought near an object without touching it. The presence of the charge object induces electron movement and a polarization of the object. Then conducting pathway to ground is established and electron movement occurs between the object and the ground. During the process, the charged object is never touched to the object being charged.

The first step necessary to allow calculation of voltages in a combination circuit containing resistive loads in series and parallel is to simplify the circuit using Ohm's law and Kirchhoff's laws.

This involves identifying the resistors in series and parallel, and then using the appropriate circuit laws to calculate the total resistance of the circuit.

Once the total resistance is calculated, the current flowing through the circuit can be found using Ohm's law.

From there, the voltage drop across each resistor can be calculated using the current and the resistance.

By combining the voltage drops across the resistors, the total voltage of the circuit can be found.

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