How long it take sphere temperature to drop temperature
A pure copper sphere with a diameter of 3.0 cm is initially at uniform temperature of 50 °C. It is suddenly exposed to an airstream of 10 °C with h = 15 W/m2-°C. How long does it take the sphere temperature to drop to 25 °C?
Expected delivery within 24 Hours
A charged particle A exerts a force of 2.60 µN to the right on charged particle B when the particles are 14.0 mm apart. Particle B moves straight away from A to make the distance between them 17.1 mm. What vector force does particle B then e
Steam at 260 c and 1 atm flow through an 8-in. schedule-80 steel pipe at a rate of 10,000 lb/hr. Estimate the value of h which applies at the inside pipe surface.
Assuming that the engine is made of iron and has an average thickness of 6.5cm between the combustion chamber and the outside surface, determine the heat transfer rate per unit of wall area when combustion of fuel occurs.
Suppose 5.00 g of hydrogen is separated into electrons and protons. Suppose also the protons are placed at the earth's North Pole and the electrons are placed at the South Pole. What is the resulting compressional force on the Earth?
It is suddenly exposed to an airstream of 10 °C with h = 15 W/m2-°C. How long does it take the sphere temperature to drop to 25 °C?
A-2-m by 1.5-m section of wall of an industrial furnace burning natural gas is not insulated, and the temperature at the outer surface of this section is measured to be 80 C.
In a jet engine a flow of air at 1000 K, 200 kPa and 40 m/s enters a nozzle where the air exits at 500 m/s, 90 kPa. What is the exit temperature assuming no heat loss?
A diffuser, shown in Fig. P6.36, has air entering at 100 kPa, 300 K, with a velocity of 200 m/s. The inlet cross-sectional area of the diffuser is 100 mm2. At the exit, the area is 860 mm2, and the exit velocity is 20 m/s.
The front of a jet engine acts as a diffuser receiving air at 900 km/h, -5°C, 50 kPa, bringing it to 80 m/s relative to the engine before entering the compressor. If the flow area is reduced to 80% of the inlet area find the temperature and pr
1944310
Questions Asked
3,689
Active Tutors
1418054
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
What is the role of knowledge-oriented leadership and employee retention in banks? What is the role of employee empowerment in customer retention?
Based upon your memos, dashboard, risks and mitigation strategies, and plan to address customer concerns. Your supervisor approved the people part of the transf
The purpose of this discussion is to help you begin developing your introduction for Paper 2 by choosing a topic, clearly stating your stance, and identifying
Explain how you would go about developing a ticket policy for your school that complies with the 2010 ADA requirements.
Termination of treatment can be tricky. Oftentimes, clients are not ready to discontinue treatment believing they require continued support
Choose one of the following controversial statements: Obesity is caused by a lack of willpower. There are large differences between men and women's cognitive ab
Three ethical and legal concerns stand out: duty to protect, limits of confidentiality, and practicing within boundaries of competence when psychiatric referra