You want to plate a steel part having a surface area of 160 with a 0.002--thick layer of lead. The atomic mass of lead is 207.19 . The density of lead is 11.36 . How many atoms of lead are required

Answer:

are you wht

didn't understand the question

Answer:

Yes/No

Explanation:

NANI?!

Among the DC motors listed, the electrical ratchet mechanism is commonly associated with a stepper motor.

The electrical ratchet mechanism is typically linked with a stepper motor among the available options for DC motors. A stepper motor makes use of electrical pulses to initiate precise rotational movements, thereby enabling accurate control over its operation.

It generally follows a sequential process where each movement is associated with a set rotation angle. The stepper motor shares a quality with an electrical ratchet as it moves forward in specific intervals, reminiscent of the ratcheting action.

The ratchet-like behavior isn't inherent in other forms of DC motors like brushless DC motors and brushed DC motors.

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A simple dynamic braking system can be created by using a normally closed contact of a large relay and: D) power resistor.

Dynamic braking is a method used to slow down or stop a motor or other rotating equipment by converting the mechanical energy into electrical energy. In this process, the electrical energy is dissipated as heat.

Using a normally closed contact of a large relay, the circuit can be configured in such a way that when the motor is not energized, the normally closed contact is closed. This allows current to flow through the circuit, including a power resistor.

A power resistor is a component specifically designed to handle high power dissipation.

When the motor is operating and the power is disconnected, the dynamic braking system activates by opening the contact of the large relay, thereby connecting the power resistor in parallel with the motor.

As a result, the energy generated by the motor's deceleration is dissipated in the form of heat through the power resistor, effectively braking the motor.

The other options listed (A. Zener regulator, B. diode, C. dual SCR) are not commonly used components in a simple dynamic braking system.

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The average daily flow of water in 10 years would be 21,249 m³/day.

To estimate the average daily flow of water in 10 years,

we have to use the current population and water consumption as a baseline.

We have to find the daily water consumption for the current population,

⇒ 6,083,270 m³ / 365 days = 16,676 m³/day

Now we have to calculate the expected water consumption for the future population,

= 16,676 m³/day x (73,728 / 58,000) = 21,249 m³/day

Therefore,

We can estimate that the average daily flow of water in 10 years would be 21,249 m³/day.

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Answer:

No matter what u post on a football page, some fatherless dude will either say "pessi" or "penaldo"

Answer:

What is the rms value Vrms of the voltage plotted in the graph?

Express your answer in volts.

Vrms = ? V

2.

When a lamp is connected to a wall plug, theresulting circuit can be represented by a simplified AC circuit, asshown in the figure. (Part B figure) Here the lamp has been replaced by a resistor with an equivalentresistance Part B figure) Here the lamp has been replaced bya resistor with an equivalent resistance R = 120 . What is the rms value Irms of the current flowing through the circuit?

Express your answer in amperes.

Irms = ? A

3.

What is the average power Pavg dissipated in the resistor?

Express your answer in watts.

Pavg = ? W

Answer:

Engine oil level.

Brake fluid.

Power steering fluid.

The correct answer is  C) Foggy conditions made visibility poor.   statements about the fatal Tesla accident involving Joshua Brown is not true.

Fog reduces sight to one kilometre, making it impossible for you to see farther than that from where you are now standing. One to two kilometres of sight may be lost due to mist. Fog comes in a variety of forms, including freezing fog, valley fog, advection fog, and radiation fog. The small water droplets hanging in the air are to blame for the decreased visibility. In urban and industrial locations, where there are lots of pollution particles functioning as water droplet nuclei, the fog tends to be the thickest. Although fog may cause precipitation (drizzle), precipitation (drizzle) is not the same thing as fog. Fog, by definition, occurs when visibility is less than one kilometre, says the international definition (0.62 mile).

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Answer:

Lack of fluid oil – lack of fluid oil in your vehicle, or a fluid leakage, can lead to heavy steering. If there is a lack of fluid oil, or a leak, this can reduce the pressure in the system, meaning the steering wheel does not receive enough supply of fluid to perform freely.

Answer:

Shelf life.

Explanation:

In Business, an inventory is a term used to describe a list of finished goods, goods still in the production line and raw materials that would be used for the manufacturing of more goods in a bid to meet the unending consumer demands.

Simply stated, an inventory can be classified into three (3) main categories; finished goods, work in progress, and raw materials.

An inventory is recorded as a current asset on the balance sheet because it's primarily the most important source of revenue for a business entity.

Also, the three (3) main cost concept associated with an inventory are;

1. First In First Out (FIFO).

2. Last In First Out (LIFO).

3. Weighted average cost.

Shelf life can be defined as a measure of the length of time that a particular product could be kept or stored without it getting bad or becoming unsuitable for use by the consumers. Thus, the shelf life of a product is largely dependent on its expiration date.

Hence, merchandise without an expiration date like electronics, tools and home goods typically have a longer shelf life.

If a polymer has a bandgap energy of 1.8 eV, it will emit blue light. The answer to this question is B - Blue.

Bandgap energy is a term used in the field of solid-state physics and semiconductor technology. It refers to the energy difference between the highest occupied energy level (valence band) and the lowest unoccupied energy level (conduction band) in a semiconductor material. The emission color of a polymer or semiconductor material is determined by its bandgap energy. When an electron transitions from the conduction band to the valence band, it emits a photon of energy equivalent to the bandgap energy.

This photon's energy corresponds to the frequency and wavelength of the emitted light, determining its color. According to the spectrum of electromagnetic radiation, shorter wavelengths are associated with higher energies, and longer wavelengths are associated with lower energies. Polymers with a bandgap energy of 1.8 eV would emit blue light, as blue light has a wavelength of around 400-500 nm and an energy of approximately 2.44 eV.

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The statement "technology has developed a lot since ford’s time. some modern cars don’t need gasoline. some don’t even need drivers" is True. Technology has been rapidly advancing in the automobile industry, particularly in the development of self-driving vehicles, electric cars, and various other features.

With the advancements in technology, several cars are made to be autonomous and run on electricity. Electric cars, hybrid cars, and fuel cell cars are common examples of cars that don't need gasoline.

Automated driving technology is a significant technological advancement that aims to reduce driver error and enhance road safety. Self-driving cars, also known as autonomous vehicles, can operate without human intervention thanks to the development of this technology.

They have the potential to eliminate driver errors, lower fuel consumption and harmful gas emissions, and provide transportation to individuals who cannot drive for medical or other reasons.

Therefore, the statement is true.

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Answer:B

Explanation: Dead Grass more flammable than wood and Green grass contains water.

Answer:

Used to recall the direction a standard screw

The type of fire extinguisher that would be used on an electric motor that has overheated and caught fire is a CO² fire extinguisher.

CO² fire extinguishers should be used to put out electrical fires. They assist to smother the fire and prevent it from spreading by displacing the oxygen in the air while leaving no residue and so being safe to electrical equipment.

Whenever there is a case of fire from electricity, water is not used in such conditions, this is because water is a good conductor of electricity. If the water comes in contact with the electricity it can cause new problems.

Therefore, the type of fire extinguisher that would be used on an electric motor that has overheated and caught fire is a CO² fire extinguisher.

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Answer:

a) 8660 and 8640 alloys

b)  8660 alloy

Explanation:

Diameter of a cylindrical piece of steel = 75 mm ( 3 in )

Equivalent distance from quenched end for the center position is about 17 mm

a) If the quenching medium is moderately agitated water the alloys that will qualify are : 8660 and 8640 alloys  because these are the two alloys that would have a minimum of 40 HRC at the center and also throughout the cylinder

b) if the quenching medium is a moderately agitated oil the alloy that will qualify is : 8660 alloy . because it is the only alloy that will maintain a minimum of 40 HRC at the center and also throughout the entire cylinder.

Spheres come to rest in contact:

- both gray, charges -q and +q

- both orange, charges -q and +q

- both orange, charges +Q and -q

- gray, charge -Q, orange, chargef +q

Spheres come to rest separated

- both gray, +Q and +q

- both gray, -Q and +q

- both orange, -q and -Q

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The weight of the spheres is small enough that electrostatic forces are significant. Spheres come to rest in contact:

- both gray, charges -q and +q

- both orange, charges -q and +q

- both orange, charges +Q and -q

- gray, charge -Q, orange, charge f +q

Spheres come to rest separated

- both gray, +Q and +q

- both gray, -Q and +q

- both orange, -q and -Q

The distance between two charges creates an electrostatic force. The distance between two charges and their respective magnitudes determine the magnitude of the electrostatic force. When two charges, either positive or negative, are brought together, they repel one another.

The phenomena and properties of electric charges that are either stationary or moving slowly are the focus of the physics branch known as electrostatics. Coulomb's law describes electrostatic phenomena, which are caused by the forces that electric charges exert on one another.

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The load that does not vary appreciably with time is the Dead Load. Dead Load refers to the static weight of the structure itself, including the weight of its components, permanent fixtures, and any other immovable loads.

When live loads are applied rapidly to a structure, they cause larger stresses than if the same loads were applied gradually. This dynamic effect of the load that causes an increase in stress is referred to as live load impact.

A type of beam wherein no rotation or vertical movement can occur at either end is a Fixed or Restrained beam. In a fixed beam, both ends are fully fixed, preventing any rotation or vertical movement.

A type of beam with a fixed support and a roller support at the other end is a Propped beam. The fixed support prevents rotation, and the roller support allows for vertical movement but restrains horizontal movement.

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If the AC unit fan is not spinning, the first thing to check is the circuit breaker. Take a look at the circuit breaker associated with the AC unit and see if it's been tripped. A circuit breaker may trip from overheating due to outside temperatures and the motor's heat.

Answer:

Explained below

Explanation:

Perfect Elastic Plastic in steel design is simply a method whereby the structural members are selected using the criteria of the overall ultimate capacity of the system. However, when safety is considered, the applied loads are usually increased by factors of safety as prescribed in the relevant steel design codes. Therefore, this model of design is just based on the yield capacity of the steel.

Answer:

Efficiency is defined as any performance that uses the fewest number of inputs to produce the greatest number of outputs. Simply put, you're efficient if you get more out of less.

Explanation:

In a fixed orifice tube system, the orifice tube itself prevents liquid refrigerant from entering the compressor.


The orifice tube is a small, fixed-size opening located in the liquid line of the air conditioning system. Its purpose is to regulate the flow of refrigerant into the evaporator coil. When the high-pressure liquid refrigerant passes through the orifice tube, it undergoes a sudden drop in pressure. This drop in pressure causes the refrigerant to rapidly change from a high-pressure liquid to a low-pressure mixture of liquid and vapor.

The orifice tube is designed to only allow the passage of this low-pressure mixture, while blocking the entry of liquid refrigerant. This is important because the compressor is designed to compress only vapor, not liquid. If liquid refrigerant were to enter the compressor, it could cause damage and decrease the efficiency of the system.


Therefore, the orifice tube plays a crucial role in a fixed orifice tube system by preventing the entry of liquid refrigerant into the compressor. It achieves this by regulating the flow of refrigerant and allowing only the low-pressure mixture of liquid and vapor to enter the evaporator coil. This helps maintain the proper functioning and efficiency of the air conditioning system.

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Answer:

What is the probability of selecting the 4 of spade or black diamond from a deck of 52 playing cards?

a) 2/52

b) 4/52

c) 3/52

d) 1/5

Explanation:

Primary functions: Maintaining the internal temperature within a specified range.Failure mode of the primary function: The internal temperature of the fridge falls outside the specified range of 2°C-8°C. 3.2

The corresponding functional failures of the function mentioned in Q3.1 are:1. Compressor failure.2. Electrical failure.3. Sensor failure.4. Fan failure.3.3 Identify two failure modes of the failures mentioned in Q3.2.Failure modes of compressor failure: Overheating and physical damage.Failure modes of electrical failure: Overheating and complete failure of electrical systems.Failure modes of sensor failure: Loss of calibration and reading accuracy.Failure modes of fan failure: Bearing failure and motor failure.3.4 Identify the corresponding failure effects of the failure modes mentioned in Q3.3.Corresponding failure effects are:

1. Overheating could lead to melting of internal plastic components.

2. Physical damage could lead to the compressor seizing, which could prevent the fridge from cooling.

3. Overheating could lead to melting of internal components, which could short-circuit and damage the electrical system.

4. Complete failure of electrical systems could result in the fridge not functioning at all

.5. Loss of calibration could lead to the temperature sensor displaying incorrect temperature readings, resulting in incorrect internal temperature ranges.

6. Reading accuracy could lead to the temperature sensor displaying incorrect temperature readings, resulting in incorrect internal temperature ranges.

7. Bearing failure could lead to the fan not rotating, which could prevent air from circulating, resulting in an increase in the internal temperature.

8. Motor failure could lead to the fan not rotating, which could prevent air from circulating, resulting in an increase in the internal temperature.

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An early type of capacitor is known as the Leyden jar. Devices that store a static electric charge are generally referred to as capacitors. Photocopiers utilize static electricity to attract toner particles onto a charged drum.

The Leyden jar is considered an early type of capacitor. It was invented in the 18th century and consisted of a glass jar filled with water or another conductive liquid. The jar had a metal electrode inside and another metal electrode on the outside. When a voltage was applied to the electrodes, the jar would store an electric charge.

The general term for devices that store a static electric charge is capacitors. Capacitors are widely used in electrical and electronic systems to store and release electrical energy. They are composed of two conductive plates separated by an insulating material called a dielectric. When a voltage is applied across the plates, the capacitor stores electric charge, and this charge can be discharged later.

Photocopiers utilize static electricity in their operation. A photocopier's drum is coated with a photosensitive material. Initially, the drum is given a positive charge through a process called corona discharge, where static electricity is used to ionize the surrounding air and charge the drum. As the charged drum rotates, it passes near the original document to be copied. The photosensitive coating on the drum attracts negatively charged toner particles from the toner cartridge onto its surface, forming an electrostatic image of the document. This image is then transferred onto paper, and the toner is fused to the paper, creating a copy of the original document.

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sens organ is the eye example