Questions
(A) car has a length of 6m and is travelling at speed of 95km/hr. What is...

(A) car has a length of 6m and is travelling at speed of 95km/hr. What is its Reynolds number?(5s.f , tolerance +/-500)
(B) for Concorde SST plane, how far could it actually glide in km?(3s.f), (has lift/drag ratio of 6:2, engines failed at altitude of 17500m and can make it to airport 106km away)

In: Mechanical Engineering

Cast-cobalt alloys quite common in manufacturing industry. Describe in details about it.

Cast-cobalt alloys quite common in manufacturing industry. Describe in details about it.

In: Mechanical Engineering

Cinemática

Cinemática



In: Mechanical Engineering

Can you write essay with 300-450 words related to these keywords? 1-Lock, 2-Friction force, 3-Friction lining-shoe,...

Can you write essay with 300-450 words related to these keywords?

1-Lock, 2-Friction force, 3-Friction lining-shoe, 4-Bearing ring,
5-speed gear wheel, 6-Tangential leaf spring

In: Mechanical Engineering

Hi, please help me with this question. What does flank wear depend on and why did...

Hi, please help me with this question.

What does flank wear depend on and why did a tool that machined steel 1020 suffered a flank wear greater than one of the same material that machined 4140 steel or aluminum?

What does crater wear depend on?

If you can give also some resources from which I can find information about the answer.

Thank you very much.

In: Mechanical Engineering

An old wooden telephone pole with a single cross member was blown off center during a...

An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member to an eye-ring stake anchored in the ground. (Figure 3) If the origin O of a coordinate system is placed where the pole meets the ground, the point where the cross member is attached to the pole is A(−2.00,1.80,23.4)ft and the point where the cable is attached to the end of the cross member is B(−2.00,−3.20,26.4)ft. The cable's direction is {1.00i−1.00j−1.00k} and it has a tension of 195 lb . What is Ma, the moment that tends to twist the telephone pole due to the tension in the cable applied at point B?

In: Mechanical Engineering

What are the weakneses of the following forces in modeling the piston: 1-Constant force 2- linear...

What are the weakneses of the following forces in modeling the piston:

1-Constant force

2- linear

3-1/2 sin wave

In: Mechanical Engineering

Refrigerant-134a enters an adiabatic compressor as saturated vapor at 160 kPa at a rate of 2.8...

Refrigerant-134a enters an adiabatic compressor as saturated vapor at 160 kPa at a rate of 2.8 m3/min and is compressed to a pressure of 900 kPa. Determine the minimum power that must be supplied to the compressor. Use the tables for R-134a.

The minimum power that must be supplied to the compressor

In: Mechanical Engineering

CHOCHITO, S.A homemade sweets factory wants to determine the normal time and standard time for packaging...

CHOCHITO, S.A homemade sweets factory wants to determine the normal time and standard time for packaging and packaging of its variety of products. The following table contains the data about a recent study, regarding the measurement of the elements to be carried out. A measurement is considered incorrect if it has a variability greater than +/- 10%, therefore it must be eliminated from the calculation. Knowing that the company grants its workers 30 minutes for the necessary delay and fatigue:

Work elements    Cycles in minutes R

1. Take a container 1.7 1.8 2.2 1.7 2.3 1.9 2.1 1.8 2.2 1.7 130%
2. Fill the container 4.3 5.7 4.4 5.6 4.6 5.5 4.6 5.4 4.7 5.3 120%
3. Cover the container 3.4 4.6 3.5 4.5 3.6 4.4 3.7 4.3 3.8 4.2 110%
4. Place the label 1.9 2.1 1.8 2.2 1.7 2.3 1.8 2.2 1.7 2.3 120%
5. Place 24 containers per box 2.3 1.8 2.2 1.7 2.3 1.9 2.1 1.8 2.2 1.7 140%

6. Stack the full boxes

7 9 6.8

9.2

6.9 9.1 7.1 8.9 7.2 8.8 120%

Calculate:

a. Normal time and standard time

b. Calculate the number of boxes per worker

In: Mechanical Engineering

How Engineering Economy helps engineers for optimized decision?

How Engineering Economy helps engineers for optimized decision?

In: Mechanical Engineering

Can there be multiple optimal solutions to an assignment problem? How to identify such situations

Can there be multiple optimal solutions to an assignment problem? How to identify such situations

In: Mechanical Engineering

What do you understand by break down maintenance? Discuss the various features of breakdown maintenance management?

What do you understand by break down maintenance? Discuss the various features of breakdown maintenance management?

In: Mechanical Engineering

Do maintenance management principles have any relevance in the service industry?

Do maintenance management principles have any relevance in the service industry?

In: Mechanical Engineering

Explain the following briefly : Redundancy Availability Maintainability

Explain the following briefly :

Redundancy

Availability

Maintainability

In: Mechanical Engineering

670 meter Cubic Cupper ball at 104°C is thrown into a lake which is at 19°C...

670 meter Cubic Cupper ball at 104°C is thrown into a lake which is at 19°C determine the amount of heat loss by the ball after it reaches a thermal equilibrium with the lake ,base your calculations on the room temperature
The answer should be -195.6 kj
Please explain each stepin words in details
Thank you

In: Mechanical Engineering