A spring-loaded piston-cylinder device contains 7 kg of helium as the system, as shown in the figure. This system is heated from 100 kPa and 20°C to 800 kPa and 160°C. Determine the heat transferred to and the work produced by this system. The properties of helium are R = 2.0769kJ/kg·K and cv = 3.1156 kJ/kg·K (Table A-2a).

Answer:

The advantages of using a pure sine wave for your appliances and machinery are as follows: Reduces electrical noise in your machinery.

translates to no TV lines and no sound system hum.

Cooking in microwaves is quicker.

Explanation:

The smoothest signal is a sine wave, and sine waves are the basis of all functions.

Every other continuous periodic function is a basis function, which means that it can be described in terms of sines and cosines.

For instance, using the Fourier series, I can describe the fundamental Sinusoidal frequency and its multiples in terms of the triangle and square waves.

The missing term in the presented paragraph is environmental.

In recent years the effects of climate change have been strongly manifested around the world causing:

Therefore, many companies have begun to investigate productive alternatives to reduce their environmental impact. In the case of the car industry, companies have deepened their research on other sources of energy such as:

One of them is Toyota, the Japanese brand that has developed cars that work hybrid, that is, with gasoline and electric power. This will reduce the emissions of CO2 and other harmful gases into the atmosphere.

Therefore, it is possible to infer that the missing term in the paragraph is Environmental.

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Answer:

a) \(L = 1.5\)

\(L_q = 0.9\)

\(W = \dfrac{1 }{8 } \, hour\)

\(W_q = \dfrac{3}{40 } \, hour\)

\(P = \dfrac{3}{5 }\)

b) The new backacter should be recommended

c) The additional backacter should not be deployed

Explanation:

a) The required parameters are;

L = The number of customers available

\(L = \dfrac{\lambda }{\mu -\lambda }\)

μ = Service rate

\(L_q\) = The number of customers waiting in line

\(L_q = p\times L\)

W = The time spent waiting including being served

\(W = \dfrac{1 }{\mu -\lambda }\)

\(W_q\) = The time spent waiting in line

\(W_q = P \times W\)

P = The system utilization

\(P = \dfrac{\lambda }{\mu }\)

From the information given;

λ = 12 trucks/hour

μ = 3 min/truck = 60/3 truck/hour = 20 truck/hour

Plugging in the above values, we have;

\(L = \dfrac{12 }{20 -12 } = \dfrac{12 }{8 } = 1.5\)

\(P = \dfrac{12 }{20 } = \dfrac{3}{5 }\)

\(L_q = \dfrac{3}{5 } \times \dfrac{3}{2 } = \dfrac{9}{10 } = 0.9\)

\(W = \dfrac{1 }{20 -12 } = \dfrac{1 }{8 } \ hour\)

\(W_q = \dfrac{3}{5 } \times \dfrac{1}{8 } = \dfrac{3}{40 } \, hour\)

(b) The service rate with the new backacter = 1.5 minutes/truck which is thus;

μ = 60/1.5 trucks/hour = 40 trucks/hour

\(P = \dfrac{12 }{40 } = \dfrac{3}{10}\)

\(W = \dfrac{1 }{40 -12 } = \dfrac{1 }{38 } \, hour\)

\(W_q = \dfrac{3}{10 } \times \dfrac{1}{38 } = \dfrac{3}{380 } \, hour\)

λ = 12 trucks/hour

Total cost = \(mC_s + \lambda WC_w\)

m = 1

\(C_s\) = GH¢ = 1300

\(C_w\) = 400

Total cost with the old backacter is given as follows;

\(1 \times 1000 + 12 \times \dfrac{1}{8} \times 400 = \$ 1,600.00\)

Total cost with the new backacter is given as follows;

\(1 \times 1300 + 12 \times \dfrac{1}{38} \times 400 = \$ 1,426.32\)

The new backacter will reduce the total costs, therefore, the new backacter is recommended.

c)

Here μ = 3 min/ 2 trucks = 2×60/3 truck/hour = 40 truck/hour

\(\therefore W = \dfrac{1 }{40 -12 } = \dfrac{1 }{38 } \, hour\)

Total cost with the one backacter is given as follows;

\(1 \times 1000 + 12 \times \dfrac{1}{8} \times 400 = \$ 1,600.00\)

Total cost with two backacters is given as follows;

\(2 \times 1000 + 12 \times \dfrac{1}{38} \times 400 = \$ 2,126.32\)

The additional backacter will increase the total costs, therefore, it should not be deployed.

Answer:

C. 14.55

Explanation:

12 x 10 = 120

120 divded by 10 is 12

so now we do the left side

7 x 3 = 21 divded by 10 is 2

so now we have 14

and the remaning area is 0.55

so 14.55

An agrarian and handicraft economy was replaced by one that was dominated by industry and machine manufacturing during the Industrial Revolution in modern history. The world as a whole was affected by this process after it started in Britain in the 18th century.

These first three industrial revolutions shaped our contemporary society. The world we live in underwent a fundamental transformation with the advent of each of these three innovations: the steam engine, the age of science and mass production, and the rise of digital technology. And right now, it's taking place once more, for the fourth time.

The term is frequently used to describe emerging technologies, or those expected to become available in the next five to ten years. It is typically reserved for technologies that are having, or are anticipated to have, significant social or economic effects.

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Answer:

The average thickness of the blubber is 0.077 m

Explanation:

Here, we want to calculate the average thickness of the Walrus blubber.

We employ a mathematical formula to calculate this;

The rate of heat transfer(H) through the Walrus blubber = dQ/dT = KA(T2-T1)/L

Where dQ is the change in amount of heat transferred

dT is the temperature gradient(change in temperature) i.e T2-T1

dQ/dT = 220 W

K is the conductivity of fatty tissue without blood = 0.20 (J/s · m · °C)

A is the surface area which is 2.23 m^2

T2 = 37.0 °C

T1 = -1.0 °C

L is ?

We can rewrite the equation in terms of L as follows;

L × dQ/dT = KA(T2-T1)

L = KA(T2-T1) ÷ dQ/dT

Imputing the values listed above;

L = (0.2 * 2.23)(37-(-1))/220

L = (0.2 * 2.23 * 38)/220 = 16.948/220 = 0.077 m

X= A+B.C+D

I hope it helps

(a) To find the time when the velocity is again zero, we set the velocity equal to 0 and solve for t:

0 = v0 + at = 9t - 3t^3

Solving for t, we find that t = ±1.

(b) To find the position and velocity when t = 4 s, we first need to find the velocity equation by integrating the acceleration equation:

v = ∫a = ∫(9 - 3t^2)dt = 9t - t^3 + C

Using the initial condition v(0) = 0, we find C = 0 and

v(t) = 9t - t^3

Next, we integrate v(t) to find the position equation:

x = ∫v = ∫(9t - t^3)dt = 3t^2 - t^4 + C

Using the initial condition x(0) = 5, we find C = 5 and

x(t) = 3t^2 - t^4 + 5

Evaluating x(t) and v(t) at t = 4 s, we have:

x(4) = 3(4^2) - 4^4 + 5 = 51

v(4) = 9(4) - 4^3 = -36

(c) To find the total distance travelled by the particle from t = 0 to t = 4 s, we need to find the distance between the initial and final positions:

d = x(4) - x(0) = 51 - 5 = 46 ft

So the total distance travelled by the particle from t = 0 to t = 4 s is 46 ft.

Answer:

The answer to this question is 9 balls

to move or walk freely and easly

Answer:

91.3 min

Explanation:

 10 x 11 x 13   in 4 minutes =  1430 in^3  / 4 min  

30 x 32 x 34 = 32640 in^3

32640 in^3   /   ( 1430 in^3 / 4 min ) =  91.3 min

Answer:

Mathematics

Explanation:

⁄(⁄ ⁄•⁄ω⁄•⁄ ⁄)⁄

Answer:

It is a field if mathematics

Answer:

B because as a textile engineer, your job is to help design and create fabric, including the equipment and materials needed for fabrication.

We have that the new bulb 's Price is P  is mathematically given as

P= $100.68

Generally the Arithmetic equation for the life time of new bulb  is mathematically given as

life time = old bulb life / (usage per 24 x 365)

Therefore

L= 14,600 / (19 x 365)

L= 2.10 years

Where

old bulb=(2 x 45.9) (1 + 15/100)2.10 x 2 + 16

Old bulb=$181.11

After tax

tax = 181.11(1 - 40%)

tax= $108.66

Therefore

the new bulb 's Price is P

108.66 = P x (1.7986) x (0.6)

P= $100.68

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Answer:

by hìuuf5ëcz

Explanation:

6tgiïuggd

Time required to melt paraffin is \(t_{m} =4660s = 1.29 hours\)

The time taken to liquify the paraffin,

\(T= 27.4^{o}\)

so, \(\frac{T-T_{0} }{T-T_{1} } = exp(\frac{-PidLb}{mxcp} )\)

Here, the Reynolds number is donated by \(R_{eD}\).

So, \(R_{eD}\) = \(\frac{4m}{pi*D*m}\)= \(\frac{4*0.1}{pi*0.025*467*10^{-6} }\)

Therefore, \(R_{eD}\) = 10,906

h = ?

Given, water flow rate = 0.1 kg/s

so, \(h = \frac{NneudK}{D} =\frac{k}{D} *00.023*R_{eD}^{4/5}* P^{0.3} _{o}\)

=\(\frac{0.653}{0.025} *0.023*10906^{4/3} *2.99^{0.3}\)

therefore, 'h' = \(1418\frac{w}{m^{2}* k}\)

so, \(T_{0} =T-(T-T_{i})exp(\frac{piDlh}{mcp} )\)

by substituting, we get

\(T_{0}=27.4-(27.4-60)exp(\frac{-pi*0.25*3*1418}{0.1*4185})\)

Therefore, \(T_{0}=42.17^{o}\)

As per the balance energy equation, we get

\(q=h_{i} C_{p} (T_{i} -T_{0} )=0.1*4185*(60-42.17) = 7500 watts\)

with the help of balance energy, we can calculate the time required to melt paraffin

so, \(q*T_{m} = P_{v}h_{s} f\)

\(=PL(wH-\frac{pid^{2} }{4})h_{s} f\)

so, \(T_{m} =(770*3)* \frac{(0.25*\frac{0.25^{2} -pi}{4} *0.025)^{2}}{750} h_{s} f\)

Therefore, time required to melt paraffin is \(T_{m} =4660 seconds= 1.29 hours\)

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Answer:

true

Explanation:

The company is considering strategies such as expanding production capacity, developing new vehicle models. Rivian's mission is to "keep the world adventurous forever" and the company's vision is to create a future where electric vehicles are the norm.

Rivian is addressing several key issues and circumstances in the automobile industry. One major issue is the need to expand production capacity to meet growing demand for electric vehicles. As the market for electric vehicles continues to evolve, Rivian aims to scale up its manufacturing capabilities to fulfill customer orders and remain competitive.

Another strategy being considered by Rivian is the development of new vehicle models. By diversifying its product lineup, Rivian can target different segments of the market and appeal to a broader range of customers. This includes expanding beyond the production of electric pickup trucks and SUVs to potentially include other vehicle types.

Enhancing its charging infrastructure is also a crucial consideration for Rivian. The company recognizes the importance of establishing a robust network of charging stations to support its electric vehicles. This includes both expanding the number of charging stations and improving their accessibility, ensuring that Rivian customers have convenient options for charging their vehicles.

Rivian's mission statement, "keep the world adventurous forever," reflects the company's commitment to building sustainable transportation solutions. It signifies Rivian's aim to create vehicles that enable people to explore and enjoy the world while minimizing their environmental impact.

The company's vision is to create a future where electric vehicles are the norm. Rivian envisions a world where electric vehicles powered by renewable energy sources dominate the automotive landscape, contributing to a more sustainable and cleaner future. In addition, Rivian seeks to integrate its vehicles with a sustainable ecosystem, promoting a holistic approach to transportation and environmental stewardship.

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Answer:

Motorcyclist Fatality and Injury Rates per Vehicle Miles Traveled, 1998-2008. 10. 9. Fatalities in School Transportation Related Crashes,. 1998-2008.

Explanation:

Answer:

Simple math. One microsecond is one 1 millionth of a second and in your example you have 5 microseconds so you will need to divide 1 million by 5 to arrive at the answer. In this case that means that there will be 200,000 of these 5 mico second cycles per second.

The period is the time taken to complete one oscillation. Hence, the period is 2 μs

Recall :

1 μs = \( 1 \times 10^{-6} s \)

10 μs = \( 1 \times 10^{-5} s \)

Hence, Frequency, is the number of cycles per second ;

5 cycles = \( 1 \times 10^{-5} s \)

x = 1 second

Cross multiply :

0.00001x = 5

x = 500,000 Hz

Hence, Frequency, F = 500000 Hz

Period = 1 / Frequency

Period = 1/500000

Period = 0.000002 seconds

Period = 2 μs

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The given statement "water testing involves opening all outlets except for the vents above the roof" is FALSE because it involves turning off all water sources and then pressurizing the system with air or water to identify any leaks or issues.

During this process, all outlets, including the vents above the roof, should be open to allow for proper drainage and ventilation. The goal of water testing is to ensure that the plumbing system is free from leaks, and that all fixtures and pipes are functioning properly.

This is a crucial step in the construction process, as any issues discovered during water testing can be addressed before the building is occupied, preventing costly repairs and potential water damage in the future.

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A hose jacket device is a piece of fire safety equipment that is used to protect hoses from external damage. A hose jacket is made up of a sleeve that is typically more than 250 feet long and is placed over a fire hose to protect it from damage during use.

A hose jacket is a device that is used to protect fire hoses from external damage. A hose jacket is a sleeve that is more than 250 feet long and is placed over a fire hose to protect it from damage while in use. Hose jackets are constructed of materials that are heat-resistant and durable, and they are used in conjunction with other firefighting equipment such as fire extinguishers and sprinkler systems to ensure that a fire is extinguished as quickly and safely as possible.

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Since shear panels or shear walls are sometimes used in steel-framed buildings. the component of wood light-frame construction serves the same function as a shear panel/wall is Wall Sheathing.

The supporting framework that serves as a covering for a building's surfaces is known as sheathing. Sheathing's primary purpose is to give a surface for additional materials to be applied to, whether on a building's walls, roof, or floors. Additionally, it gives buildings more structural integrity.

Therefore, Sheathing for walls is largely a structural component. It stops walls from swaying or bending and is fastened to the outer wall framing. Building walls are constructed using sheathing as a base for siding nails.

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Answer:

True

Explanation:

Because the Electric Magnetic Field is the work done per unit charge where other forms of energy is tranferred to electrical energy

The density of the fluid inside the cylinder based on the given quantities, for both teflon sphere and steel sphere is 1909.21 kg/m³.

Cookware, apparel, personal care items, and manufacturing all use teflon in some capacity. It can be applied to nearly anything without affecting the quality or shape of the coated item, which is its most adaptable quality. Non-stick cookware comes to mind when most people think of Teflon.

S = ut + 1/2 \(a_{net}\) t²

Also,

F = mg - \(F_{up}\)

\(a_{net}\) = (mg-\(F_{up}\))/ m

\(a_{net}\) = (\(P_{T} V_{G}\) - \(P_{F}\)\(V_{G}\))/ \(P_{T}\) V  → g\(P_{T} -P_{F} / P_{T}\)

S = 1/2 * g\((P_{T} -P_{F} /P_{T} )\) t²

s = 1/2 * (9.81) ([2148 - \(P_{F}\)]/ 2148) (24.36)²

Similarly for steel

S = 1/2 * g\(P_{S} - P_{F}/ P_{S}\) t²

S= 1/2 * (9.81) ([7991 - \(P_{F}\)]/ 7991) (24.36)²

Solving both equations,

\(P_{F}\) = 1909.21 kg/m³

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Answer:

Q = [ mCp ( ΔT) ] \(_{cooling water }\)

(ΔT)\(_{cooling water}\) and  Q  is given

\(m_{cooling water}\)  = \(\frac{Q}{Cp[ T_{out} - T_{in} ] }\)

next the rate of condensation of the steam

Q = [ m\(h_{fg}\) ]\(_{steam}\)

  \(m_{steam} = \frac{Q}{h_{fg} }\)

Total resistance of the condenser is

R = \(\frac{Q}{change in T_{cooling water } }\)

Explanation:

How will the rate of condensation of the steam and the mass flow rate of the cooling water can be determined

Q = [ mCp ( ΔT) ] \(_{cooling water }\)

(ΔT)\(_{cooling water}\) and  Q  is given

\(m_{cooling water}\)  = \(\frac{Q}{Cp[ T_{out} - T_{in} ] }\)

next the rate of condensation of the steam

Q = [ m\(h_{fg}\) ]\(_{steam}\)

  \(m_{steam} = \frac{Q}{h_{fg} }\)

Total resistance of the condenser is

R = \(\frac{Q}{change in T_{cooling water } }\)

The allowable normal strength in the c-section is 48000 pounds per square inch.

The allowable stress depends on both the factor of safety imposed on the object and the yield strength or stress at which an object will be permanently damaged. To calculate the allowable normal strength we can divide the yield strength by the factor of safety.

To determine the allowable normal strength output we can use this equation below:

The allowable normal strength = The number yield strength : A stress-concentration factor

The number yield strength is 84 kpsi.

Then convert kpsi to psi : 84 kpsi = 84000 psi

A stress-concentration factor is 1.75

The formula to find allowable normal strength output is:

84000 psi : 1.75 = 48000

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The angle of attack of a wing directly controls the C) distribution of pressures acting on the wing.

When the angle of attack of a wing is increased, the air moving over the curved upper surface of the wing must travel a greater distance and faster than the air moving beneath the wing's flat lower surface. This creates an area of lower air pressure above the wing and an area of higher air pressure beneath the wing, resulting in lift. The greater the angle of attack, the greater the lift produced.

However, if the angle of attack is too great, the airflow over the wing may separate, causing a loss of lift and potentially leading to a stall. Therefore, proper control of the angle of attack is crucial for safe and efficient flight.

Option C is answer.

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