ment you illuminate a metal with light of an unknown wavelength and measure the maximum kinetic energy of the photoelectrons to be 0.65 eV. Then you illuminate the same metal with light of a wavelength known to be 2/3 of the first wavelength and measure a maximum kinetic energy of 2.3 eV for the photoelectrons.(a) Find the first wavelength, in nanometers.(b) Find the metal's work function, in electron volts.

(a) The initial temperature is 373.95 K.

(b) The final temperature is 546.15 K.

(c) The total internal energy change of the fluid during this process is 515.4 kJ.

(d) The process can be represented as an isochoric heating process on the P-v diagram and as an isobaric expansion process on the T-v diagram.

(a) To find the initial temperature, we can use the saturated steam tables. At a pressure of 200 kPa, the corresponding saturation temperature is 373.95 K.

(b) Since the volume doubles, the process is an isochoric (constant volume) heating process. Using the ideal gas law, we can determine the final temperature. The initial and final volumes are related by the equation V_final = 2V_initial. Since the mass remains constant, the specific volume (v) is inversely proportional to the density (ρ). Therefore, ρ_final = ρ_initial/2. Using the ideal gas law, we can calculate the final temperature to be 546.15 K.

(c) The total internal energy change can be calculated using the equation ΔU = mC_vΔT, where m is the mass of the fluid and C_v is the specific heat at constant volume. Given the mass as 0.5 kg, the specific heat of water at constant volume, and the temperature change, we can find that the total internal energy change is 515.4 kJ.

(d) On the P-v diagram, the process is represented as a vertical line at 200 kPa, indicating constant pressure. On the T-v diagram, the process is shown as an upward-sloping line, indicating an isobaric expansion process. The initial state is represented as a point on the left, and the final state is represented as a point on the right. The path between the initial and final states is a straight line connecting these two points.

Learn more about pressure here:

https://brainly.com/question/29341536

#SPJ11

Ferromagnetic materials are familiar metals that are noticeably attracted to a magnet, a consequence of their substantial magnetic permeability.

In the presence of an external magnetic field, ferromagnetic materials show considerable magnetism. Due to their high sensitivity to magnetization, these materials can be quickly and easily magnetised and can keep their magnetization even after the external magnetic field is removed.

Iron, nickel, cobalt, and several of their alloys, as well as a few rare-earth elements, are ferromagnetic materials. These materials become magnetic due to the alignment of their electron spins, which produces a magnetic moment that strengthens the surrounding magnetic field.

The creation of magnetic domains as a result of this spin alignment strengthens the material's magnetic characteristics. Permanent magnets, electromagnets, transformers, and other devices that rely on magnetism are frequently made of ferromagnetic materials.

Learn more about Ferromagnetic materials:

https://brainly.com/question/31140686

#SPJ1

Answer:

P=I²R

Explanation:

P=2*10^-3 square times 10

4 times ten raise to power minus 5

According to the conservation of angular momentum, if an ice-skater who is spinning with her arms out wide slowly pulls them close to her body, this will cause her to spin faster.

An ice-skater who is spinning with her arms out wide has a certain amount of angular momentum. When she pulls her arms close to her body, she reduces her moment of inertia, which is a measure of the object's resistance to rotational motion.

This means that with the same amount of angular momentum, she must increase her angular velocity to compensate for the reduced moment of inertia. Therefore, she will spin faster.

This phenomenon can be explained by the conservation of angular momentum. Because there is no external torque acting on the ice-skater, her angular momentum must remain constant.

As she reduces her moment of inertia by pulling her arms closer to her body, her angular velocity must increase to keep her angular momentum constant. This is similar to a figure skater spinning on one leg and then bringing the other leg in to spin faster.

This concept is not limited to ice-skaters, but can be applied to any rotating object or system.

For example, a planet's rotation can be affected by the distribution of its mass. If the mass becomes more concentrated towards the center, the planet's moment of inertia decreases, causing it to spin faster to conserve its angular momentum.

To learn more about inertia, refer below:

https://brainly.com/question/3268780

#SPJ11

Answer:

50m/s

Explanation:

Given parameters:

Acceleration  = 5m/s²

Time  = 10s

Unknown:

Final velocity of the puppy  = ?

Solution:

Acceleration is the rate of change of velocity with time taken. The puppy has an initial velocity of 0m/s.

 The formula is:

 Acceleration  = \(\frac{Final velocity - Initial velocity }{time}\)  

         5  = \(\frac{Final velocity - 0 }{10}\)  

               Final velocity  = 50m/s

Answer:

give brainliest please

Explanation:

T- lymphocytes or T cells

Answer:

Bacteria

Explanation:

UV kills bacteria and its 8 letters

The Yaesu FTM-300DR's optional wires-X connection cable kit is the SCU-39. The cables and adapters needed to use the wires-X digital communication mode and link the transceiver to a PC are included in this kit.

WIRES-X. An Internet communication system called WIRES (Wide-coverage Internet Repeater Enhancement System) increases the range of amateur radio communication. In WIRES-X, the wireless communication is connected to the Internet through the use of an amateur node station acting as an access point.

Requires a transceiver with the Yaesu C4FM Portable Digital Node capability (FT5D, FT3D, FT2D, FTM-400XD, FTM-300D, FTM-200D, FTM-100D: as of 8/2021 or Firmware update, FTM-400D: Requires Firmware update), a USB connection cable, and a computer with the WIRES-X software and WIRES-X.

To know more about wires visit:-

https://brainly.com/question/12984460

#SPJ4

Answer:

there is no context??????

Resources that can take centuries to millions of years to replenish are typically referred to as non-renewable resources.

Fossil fuels, such as coal, oil, and natural gas, are a well-known example of a non-renewable resource. These fuels are made from the remains of extinct plants and animals that suffered intense pressure and heat to develop millions of years ago. Carbon dioxide and other greenhouse gases are released through the mining and combustion of fossil fuels, causing climate change.

Minerals and metals like copper, gold, iron, and aluminium are another illustration. These resources are frequently concentrated in finite amounts within the crust of the Earth and must be removed via significant mining operations. Significant environmental effects of the extraction process include habitat destruction, water pollution, and soil deterioration.

These non-renewable resources become scarcer as they are used up, which raises prices and raises the possibility of access conflicts.

For more such questions on Resources

https://brainly.com/question/29843861

#SPJ11

Explanation:

The amount of CD is 35 g, and the amount of AC is 40 g.

Explanation:

AB + CD \rightarrow AC + BDAB+CD→AC+BD

The law of conservation of mass states that in any chemical reaction, the total mass of the reactants must be equal to the total mass of the products.

In this reaction, we know the mass of one reactant (AB, 15 g) and the mass of one product (BD, 10 g). In order to have the same total mass on the left side and on the right side of the equation, the mass of AC must be 5 g more than the mass of CD. We see that the only choice that satisfies this condition is:

The amount of CD is 35 g, and the amount of AC is 40 g.

In fact, if we assume these masses are correct, we have:

- on the reactant side: m(AB)+m(CD)= 15g + 35g = 50g

- on the product side: m(AC)+m(BD)= 40g + 10g = 50g

so, we have the same mass on both sides of the equation, and the law of conservation of mass is satisfied.

Answer:

B is  the answer on edge

Explanation:

B: The amount of CD is 35 g, and the amount of AC is 40 g.

Answer:A

Explanation:

Answer: A)The speed of light in a vacuum is constant, and nothing is faster than the speed of light.

Explanation:

Answered Correctly on Edg.

Approximately 47.37% of the soil volume is pore space, and approximately 52.63% is solid particles.

To calculate the percentage of pore space and solid particles in the soil volume, we can use the following formula:

Pore space percentage = ((Particle density - Bulk density) / Particle density) x 100

Solid particles percentage = 100 - Pore space percentage

Given:

Bulk density = 1.4 Mg/m³

Particle density = 2.66 Mg/m³

Substituting the values into the formulas:

Pore space percentage = ((2.66 - 1.4) / 2.66) x 100

Solid particles percentage = 100 - Pore space percentage

Calculating the values:

Pore space percentage ≈ 47.37%

Solid particles percentage ≈ 52.63%

Therefore, approximately 47.37% of the soil volume is pore space, and approximately 52.63% is solid particles.

To know more about Bulk density, visit:

https://brainly.com/question/25986876

#SPJ11

The magnitude of the distance (33.4 m) of the player is greater than his displacement (27.4 m).

The given parameters;

A sketch of the players displacement is shown below;

     |---------------------27.4 m--------------------------->|---------3 m------->|

box ________________________________base

                                                                             ←------ 3m----------

The total distance of the player = 27.4 m + 3 m extra + 3m backwards

                                                     = (27.4 + 3 + 3) m

                                                     = 33.4 m

The displacement of the player = forward displacement - backward displacement

The displacement of the player = (27.4 + 3) - 3 = 27.4 m

Thus, the magnitude of the distance (33.4 m) of the player is greater than his displacement (27.4 m).

Learn more here: https://brainly.com/question/17345815

Answer:

It's C) color

Explanation:

--------

Answer:

Eye function renders you the sense of sight. They convert light into electrical signals. Afterwards, the brain deciphers these electrical signals into images. Properly working healthy eyes are able to perform the following functions.

Explanation:

This is due to the fact that occluded fronts combine two cold air masses, which causes one of the cold air masses to go downward.

When a warm air mass is sandwiched between two cold air masses, an occluded front occurs. In an occlusion, the warm front passes over the cold front, which dives beneath it.

In a front is obscured, the warm front is fully supplanted by the cold front, in which the warm air masses have completely disappeared. Furthermore, there are frequent shifts in the various weather producing circumstances because of the cold front's relatively low temperature.

Learn more about occluded fronts, here:

https://brainly.com/question/11718564

#SPJ4

Hope you could understand.

If you have any query, feel free to ask.

The positive feedbacks without uncertainty are water vapor feedback. The feedbacks that affect the terrestrial radiation budget are lapse rate feedback, ice-albedo feedback, water vapor feedback, and cloud feedback.

Among the feedbacks listed, the ones that are definitely positive (without uncertainty) are: 1. Water vapor feedback: An increase in temperature leads to an increase in atmospheric water vapor content, which amplifies the greenhouse effect and further enhances warming. This feedback is positive. The feedbacks that affect the terrestrial radiation budget (the balance of incoming and outgoing radiation at the Earth's surface) are: 1. Lapse rate feedback: This feedback is related to the vertical temperature profile of the atmosphere. If the lapse rate (the rate at which temperature changes with altitude) decreases with warming, it can amplify the warming or cooling effects. It affects the radiation budget indirectly by influencing the atmospheric temperature structure. 2. Ice-albedo feedback: When temperatures rise, ice and snow cover decrease, exposing darker surfaces (such as land or ocean) that absorb more solar radiation. This leads to further warming, creating a positive feedback loop that affects the radiation budget. 3. Water vapor feedback: As mentioned earlier, an increase in temperature leads to increased atmospheric water vapor content. Water vapor is a potent greenhouse gas that affects the radiation budget by trapping outgoing longwave radiation and amplifying the greenhouse effect.b4. Cloud feedback: Changes in temperature and atmospheric moisture content can affect cloud formation and properties. Clouds can either trap heat (positive feedback) or reflect sunlight back to space (negative feedback), depending on their type, altitude, and coverage. The net effect of cloud feedback on the terrestrial radiation budget depends on the specific cloud changes in response to warming.

Learn more about atmosphere  here:

https://brainly.com/question/11192430?

#SPJ11

The reaction exhibited an exothermic reaction.

Considering the energy values: The energy of the resulting products is lower compared to that of the initial reactants, indicating the liberation of energy throughout the reaction. This exemplifies the characteristic behavior of an exothermic reaction.

Analyzing the shape of the graph: If we were to plot the energy of the reaction as a function of time, the graph would display a downward trajectory, signifying a decrease in the system's energy. This aligns with the typical features associated with an exothermic reaction.

Learn about exothermic reaction here https://brainly.com/question/2924714

#SPJ1

Complete question:

In a particular chemical reaction, the energy of the reactants is 30 kJ and the energy of the products is 5 kJ. The maximum energy of the system is 40 kJ.

D. Is this reaction endothermic or exothermic? Explain your answer in two ways: first, using the energy values, and second, by referring to the shape of the graph.

S, P, D, and f are the four potential subshells in quantum mechanical theories. The angle momentum quantum number, l, is represented by these letters in numerical form.

A subshell is a group of states that make up a shell and are identified by the azimuthal quantum number, l. Subshells s, p, d, and f are represented by the values l = 0, 1, 2, and 3, respectively. The equation 2(2l + 1) states how many electrons can fit into a subshell at once.

The circular routes that electrons take in an atom's shells as they circle its nucleus. (In line with the Bohr Model). The primary quantum number, n, serves as a representation of the shells. Additionally, each shell is divided once more into many subshells.

Four subshells are present: s, p, d, and f.

For instance, the first shell has just one sub-shell, which is s.

There are two sub-shells in the second shell: s and p.There are three sub-shells in the third shell: s, p, and d.The remaining shells are made up of all four subshells: s, p, d, and f.

Learn more about subshells

https://brainly.com/question/30792037

#SPJ4

Answer:

Online means connected to a network.

Credible means reliable or trustworthy

Cite means to quote from an article or book.

If 1.00-m³ object floats in water with 20.0% of its volume above the waterline, the volume above the waterline is 0.80 m³. The weight of the object out of the water is 7848 N.

To solve this problem, we'll use the concepts of buoyancy, volume, and weight.

1. Determining the volume submerged in water:
Since 20% of the object's volume is above the waterline, 80% of its volume is submerged.
Submerged volume = 0.80 * 1.00 m³ = 0.80 m³

2. Calculating the buoyant force:
Buoyant force (F_b) = Volume submerged * density of water * acceleration due to gravity (g)
F_b = 0.80 m³ * 1000 kg/m³ * 9.81 m/s² = 7848 N

3. Calculating the weight of the object:
Since the object is floating, its weight (W) is equal to the buoyant force.
W = F_b = 7848 N

So, the weight of the object out of the water is 7848 N.

More on weight: https://brainly.com/question/19719921

#SPJ11

Answer:

0.7 m between the balance point and Tiny

Explanation:

It's intuitive to say she sould be on the side the smaller mass is placed. How far from the balance point?

Let's call x that distance. and assume that the contraption is "oriented" so that being on the side with tiny (and teeny) gives you a positive distance from the balance point, and negative on the other side.

At equilibrium, the sum of all momentums (momenta?) will be zero:

\(67\times 1.4 +32\times x + 83 \times (-1.4) = 0\\32x -16(1.4) = 0 \rightarrow 2x=1.4 x= 0.7\)

In layman's term, she has to be halfway between the balance point and Tiny.

Answer:

folk dancing is old music and ball room is young dancing

Answer:

.92 T

Explanation:

This is just a plug-and-chug question.

Here is the formula: B = uni

u = vacuum permeability = 4pi * 10^-7 this is a given constant

n = turns per meter = 1040/ (4.4*10^-2)

i = current = 31 A also given by the problem

so B = .92 T

The unit of the magnetic field is Tesla ("T")

Answer:

What is ultraviolet radiation used for? Ultraviolet radiation is useful as both a research tool and a sterilizing technique. It can also be used in fluorescent lamps, which are a more energy-efficient form of artificial lighting compared with incandescent lamps.

Explanation:

UV radiation is widely used in industrial processes and in medical and dental practices for a variety of purposes, such as killing bacteria, creating fluorescent effects, curing inks and resins, phototherapy and suntanning. Different UV wavelengths and intensities are used for different purposes.

A helicopter’s velocity increases from 35 m/s to 70 m/s in 10 seconds. The acceleration of this helicopter is 3.5 m/s².

The term acceleration is defined as the change in velocity as per time,  in terms of both speed and direction. Acceleration is denoted by the symbol "A".

Unbalance forces ac cause acceleration in an object. It was changing its speed, its direction, or both its speed and direction.

A = V / T

Where,

A = acceleration

V = velocity

T = time

We have given:

Velocity = 70 - 35 = 35 m/s

Time = 10 seconds

Acceleration = ?

By putting this value in given equation we can find the acceleration of this helicopter

A = 35 / 10

= 3.5 m / s²

Thus, A helicopter’s velocity increases from 35 m/s to 70 m/s in 10 seconds. The acceleration of this helicopter is 3.5 m/s².

To learn more about an acceleration, follow the link;

https://brainly.com/question/12550364

#SPJ2