If the contact surface between the 20-kg block and the ground is smooth, determine the power of force F when t = 4 s. Initially, the block is at rest

Answer:

see and make me brainlist

Explanation:

What is oxy fuel cutting used for?

Oxy-fuel cutting is used for the cutting of mild steel. Only metals whose oxides have a lower melting point than the base metal itself can be cut with this process. Otherwise as soon as the metal oxidises it terminates the oxidation by forming a protective crust.

Answer:

The inductance of the inductor is 0.051H

Explanation:

From Ohm's law;

  V = IR .................. 1

The inductor has its internal resistance referred to as the inductive reactance, X\(_{L}\), which is the resistance to the flow of current through the inductor.

From equation 1;

V = IX\(_{L}\)

X\(_{L}\) = \(\frac{V}{I}\) ................ 2

Given that; V = 240V, f = 50Hz, \(\pi\) = \(\frac{22}{7}\), I = 15A, so that;

From equation 2,

X\(_{L}\)= \(\frac{240}{15}\)

    = 16Ω

To determine the inductance of the inductor,

X\(_{L}\) = 2\(\pi\)fL

L = \(\frac{X_{L} }{2 \pi f}\)

  = \(\frac{16}{2*\frac{22}{7}*50 }\)

 = 0.05091

The inductance of the inductor is 0.051H.

Answer:

Option D

Explanation:

A composite material is made up of two material which have different properties (chemically or physically). The two materials are mixed in such a way that it improves the properties of both the materials (the one  in the matrix and the other in the filler) thereby enhancing the overall strength and stiffness of the matrix.

Hence, option D is correct

A correct option is an option (c)

The main advantage of the composite is there higher strength as compared to the matrix.

The strength is very low as compared to the resultant composite and the fiber.

The resultant strength can be calculated in two direction

The longitudinal way is,

\(E=V_mE_m+V_fE_f...(1)\)

The transversal way is,

\(\frac{1}{E}=\frac{V_m}{E_m}+\frac{V_f}{E_f} ...(2)\)

From equations (1) and (2) we get,

\(E_m < E < E_f\)

So, mode with strong fibers embedded in a weaker and softer matrix to obtain strength better than the strength of the matrix.

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Answer:

  a) up

  b) down

Explanation:

When the cube is less dense than water, it will tend to float (move upward). When it is more dense, it will sink (move downward).

a) 160.2 kg/m^3 < 1000 kg/m^3. The cube will move up.

__

b) 7849 kg/m^3 > 1000 kg/m^3. The cube will move down.

The addition of the 3d pen to the U.S.A market would be viewed as a market-development strategy on ansoff's opportunity matrix.

Market can be defined as a space where buyers and sellers come together to exchange goods and services. It can be a physical place, such as a street market, a farmers' market, a flea market, or an online marketplace. In a market economy, the laws of supply and demand regulate prices and determine what goods are available and how they are produced. Markets are essential in any economy, and they are the most efficient way to allocate resources. Markets create competition, which helps to keep prices low and quality high. By allowing sellers to compete for buyers’ business, markets also provide consumers with a wide variety of products to choose from. Markets also allow for the efficient allocation of resources, since the demand for a product will drive the production of it. In short, markets are essential for economic growth and prosperity.

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We may draw two lines a day on a single chart, which is useful for monitoring trends or shifts over time.

When it comes to visualizing data, a chart (sometimes referred to as a graph) uses symbols to represent the data, such as columns in a bar graphs, lines in a graphical form, nor slices in either a pie chart.

Data sets, frequency distributions, graphs, and descriptive statistics are examples of common graph types. Graphs are a fantastic tool for presenting statistics and presenting information. To display quantitative data that is unrelated to one another, use a graph or chart.

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Answer:

  9.29 N . . . . weight of 0.948 kg sphere

Explanation:

The sum of torques on the link BOA is zero, so we have ...

  (right force at A)(OA) = (up force at B)(OB·sin(135°))

Solving for the force at B, we have ...

  up force at B = (10.53 N)(253 mm)/((553 mm)/√2) ≈ 6.81301 N

This force is due to the difference between the buoyant force on the float sphere and the weight of the float sphere. Dividing by the acceleration due to gravity, it translates to the difference in mass between the water displaced and the mass of the sphere.

  ∆mass = (6.81301 N)/(9.8 m/s^2) = 0.695205 kg

__

The center of the sphere of diameter 0.1553 m is below the waterline by ...

  (553 mm)cos(45°) -(353 mm) = 38.0300 mm

The volume of the spherical cap of radius 155.3/2 = 77.65 mm and height 77.65+38.0300 = 115.680 mm can be found from the formula ...

  V = (π/3)h^3(3r -h) = (π/3)(115.680^2)(3·77.65 -115.68) mm^3 ≈ 1.64336 L

So the mass of water contributing to the buoyant force is 1.64336 kg. For the net upward force to correspond to a mass of 0.695305 kg, the mass of the float sphere must be ...

  1.64336 kg -0.695205 kg ≈ 0.948 kg

The weight of the float sphere is then (9.8 m/s^2)·(0.948 kg) = 9.29 N

The weight of the 0.948 kg float sphere is about 9.29 N.

Answer:

Up to a depth of 1.5 times the window height.

Explanation:

Answer:

The original seven wastes, or muda, are transportation, inventory, motion, waiting, overproduction, overprocessing and defects. ... When manufacturers are able to identify the seven wastes, they can correct and prevent further loss of time, money and other resources.

Explanation:

Answer:

transportation, inventory,motion, waiting,overproduction,overprocessing,and defects

Explanation:

they are often referred to by the acronym TIMWOOD

The maximum positive moment at c is 135k/ft

the maximum positive vertical reaction at b is 27k

Part a

Maximum positive moment at c

For maximum positive moment at C and as per Muller's principle, ILD influence line will be on moment at с, this is calculated using the equation below:

Maximum positive moment at c = \((\frac{1}{2} *20*5*(0.4+0.5) )+(5*8)\)

                                                    = 135k.ft

Part b

Maximum positive vertical reaction at b

To find this using Muller's principle, we keep dead load throughout the span and consequently keep point load at B

Maximum positive vertical reaction at b = \((\frac{1}{2} *20*1*(0.4+1.5))+(1*8)\)

                                                                 = 27k

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Based on the fact that Megan arranged the machines according to their functions, this is Process layout. Thus, option A is correct.

This is the way of arranging a shop or factory where the machines and equipment are arranged according to their function.Megan arranged her machines according to how they function so that she can be able to move from one station to another. This is therefore a process layout.

In the process layout, similar processes are grouped together, and machines are arranged according to the production process. This type of layout is ideal for factories that produce a variety of products with different production requirements, as it allows for flexibility in production.

In a heavy machine tools factory, various machines with different production requirements are used, and a process layout would allow for efficient use of resources and flow of materials.

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False. Airports use moving walkways to decrease the distance people have to walk and enhance their convenience and efficiency while moving within the airport.

The statement is incorrect. Airports utilize moving walkways, also known as travelators or moving sidewalks, to reduce the distance people need to walk and facilitate their movements. Moving walkways are designed to enhance convenience and efficiency by allowing individuals to cover greater distances within the airport more quickly and with less physical effort. They are especially useful in large airports where terminals and gates can be far apart. By providing a moving surface, airports aim to streamline passenger flow and minimize the time and effort required for individuals to traverse long distances within the airport premises. Moving walkways offer a time-saving benefit and contribute to the overall ease of travel for passengers, improving their experience and reducing fatigue associated with walking long distances.

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Answer:

No

Explanation:

In the early Aviation history men have always dominated the world of aviation and women are notoriously under-represented, particularly in technical and leadership roles. Therefore, women was treated unequal.

Unfortunately, I cannot see the figure you referred to in your question. However, I can provide you with the general steps to solve the problem.

To determine the dimensions of the riser so that it will take 0.5 min longer to freeze than the casting itself, you can use Chvorinov's rule, which relates the solidification time of casting to its volume and surface area.

The formula for Chvorinov's rule is:

t = K(V/A)^n

where:

t = solidification time (min)

K = mold constant (min/in^2)

V = volume of casting (in^3)

A = surface area of casting (in^2)

n = a constant that depends on the shape of the casting

To apply Chvorinov's rule to the riser, you need to determine the volume and surface area of the casting and the riser. Then, you can set up two equations using Chvorinov's rule, one for the casting and one for the riser, and solve for the diameter and height of the riser.

Here are the general steps to solve the problem:

Determine the volume and surface area of the casting. You can do this by breaking down the casting into simple shapes (e.g., cylinder, cone, sphere) and calculating their volumes and surface areas.

Determine the volume and surface area of the riser. Since the diameter-to-length ratio is 1.0, the riser is a cylinder. The volume of a cylinder is V = πr^2h, and the surface area is A = 2πrh + 2πr^2, where r is the radius of the cylinder and h is the height.

Plug the values for the volume and surface area of the casting and the riser into Chvorinov's rule to set up two equations:

t_casting = K(V_casting/A_casting)^n

t_riser = K(V_riser/A_riser)^n + 0.5

Substitute the formulas for the volumes and surface areas into the equations and simplify.

Solve the two equations for the radius and height of the riser.

I hope this helps you to solve the problem. If you have any further questions or need additional assistance, please let me know.

Answer:

True

Explanation:

It's just because of the processing

A "While" Loop is used to repeatedly execute a particular block of code until a condition is met.

The responses to the questions are listed below. The operation that determines whether the condition x 10 is true is assessed first because the operator is used first. The reason for this is that we use the post increment operator for x. As a result, x is first used for the operation we are performing before being raised by 1. According to semantics, the variable's value is increased by 1 by both prefix and postfix ++. The result of the operator is the NEW/CURRENT value stored in the variable if the ++ is placed before the variable (a prefix operator); the result of the operator is the value stored in the variable if the ++ is written after the variable (a postfix operator).

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The 'marking menu' opened up ways for me to access the most commonly used commands and tools with a flick of the wrist. What's more impressive is that its dependent on workspace, so you can use it in all parts of the design!

HOPE IT HELPS:)

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Answer:

Except what? I'm confused

All of these are true about using adhesive except Bilateral. A bilateral contract is defined as an agreements between two parties in which each side agrees to fulfill his or her side of the bargain.

A bilateral contract is defined as an agreements between two parties in which each side agrees to fulfill his or her side of the bargain. According to my research on the different terms used when referencing an insurance contract, I can say that all of the answers provided except for Bilateral are considered typical characteristics describing the nature of an insurance contract.

Since an insurance contract is a fund that the insurance company pays in the case of an accident in which the person is injured, there is only one party that agrees to fulfill their side of the bargain and that is the insurance company.

Therefore, All of these are true about using adhesive except Bilateral. A bilateral contract is defined as an agreements between two parties in which each side agrees to fulfill his or her side of the bargain.

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Since the Earth contains a constant temperature range heat exchangers can be built underground without other added expenses yes they are expensive to put underground but the pay off is greater long term wise since the heat rises it can be said you could put a heatpump in a small area and it can over time increase the relative heat in that area of effect.

hope this helps look into, heat displacement thru underground heating to get a clearer picture

Answer: None of the above

Explanation:

Business process modeling refers to the graphical representation of the business processes of a company, which is vital in the identification of potential improvements.

Business pticess modelling can be done through graphing methods, like data-flow diagram, flowchart etc. It is vital as business managers can effectively and quickly communicate their ideas.

It also enhances the customization of business processes, enhances the competitive advantage and enhances the process communication as well.

Therefore, the answer to the question will be "None of the above".

Answer:

2/4

7/2

92/1

83/1

9/1

93/0

Explanation:

R

K

K

R

K

R

I don't really know the answer

Answer:

He can take the job at the fast food restaurant to make money in order to pursue his career in robotics it doesnt mean he cant pursue it just he needs to make money for it first.

Answer:

I think is B

Explanation:

The given statement of "To fasten a duct hanger to a gypsum board wall, the best fastener would be an anchor shield" is false.

Anchor shields are typically used to secure objects to concrete or masonry walls.

For fastening a duct hanger to a gypsum board wall, the best fastener would be a toggle bolt or a self-drilling drywall screw. These fasteners are specifically designed for use in drywall and can provide a secure hold for the duct hanger.

Therefore, one can say that Anchor shields may not provide a secure hold in drywall, as they are designed for use in masonry or concrete.

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Answer:

Engine

Explanation:

Semi-independent suspension is the most common type of suspension system used on body over frame vehicles.

Semi-independent suspension give the front wheels some individual movement.

This suspension only used in rear wheels.

Thus, the correct option is Semi-independent suspension

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