A copper sphere having a diameter of 3 0 cm is initially at a uniform temperature of 50C It is suddenly exposed to an airstream of 10C with h 15 W m2C How long does it take the sphere temperature to drop to 25C ...

A copper sphere having a diameter of 3.0 cm is initially at a uniform temperature of 50C.

Question:

A copper sphere having a diameter of 3.0 cm is initially at a uniform temperature of 50ºC. It is suddenly exposed to an airstream of 10ºC with h = 15 W/m2·ºC. How long does it take the sphere temperature to drop to 25ºC?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Heat Transfer

ISBN: 978-0073529363

10th edition

Authors: Jack Holman

See More Books

Question Posted: Apr 22, 2016 04:53 AM

See More Questions

A heated sphere having a diameter of 3 cm is maintained at a constant temperature of 90oC and placed in a water flow stream at 20oC. The water flow velocity is 3.5 m/s. Calculate the heat lost by the...
Ahorizontal heating rod having a diameter of 3.0 cm and a length of 1 m is placed in a pool of saturated liquid ammonia at 20oC. The heater is maintained at a constant surface temperature of 70oC....
A granite sphere having a diameter of 15 cm and initially at a uniform temperature of 120C is suddenly exposed to a convection environment with h = 350 W/m2 C and T = 30C. Calculate the temperature...
The following recreation demand function is for a beach: x = 4 (p/500) + q. The visitation amount is represented by x (times), the travel cost is represented by p (yen), and the water quality is...
What is the concept of pushdown accounting and how it would impact the consolidation process?
Why might airline managers choose to lease rather than purchase their planes?
Kay, Kat, and Kim are partners. In a liquidation, Kays share of partnership losses exceeds her capital account balance. Moreover, she is unable to meet the deficit from her personal assets, and her...
Telfer, Inc. reported net income of $2.8 million in 2017. Depreciation for the year was $160,000, accounts receivable decreased $350,000, and accounts payable decreased $280,000. Compute net cash...
The Hogan Company purchased a machine for $250,000. The company expects the service life to be five years. During that time, its expected that the machine will produce 140,000 units. The anticipated...
The Case Study - "Lemonade: Delighting Insurance Customers with AI and Behavioral Economics". 1. How do you explain the phenomenal growth experienced by Lemonade? 2. Does Lemonade create a unique...
The solid of Problem 3-74 is initially uniform in temperature at 100C, but suddenly the two surfaces are lowered to 0 and 40C. If the solid has k = 20 W/mC and = 5 106 m2/s, find the steady-state...
Apply the lumped-capacity criterion of Equation (4-6) [h(V/A)/k < 0.1] to each of the geometries treated with the Heisler charts. Approximately what percent error would result for each geometry in...
$n=610, p_{i}=0.89$ Find the expected frequency for the values of $n$ and $p_{i}$.
Explain Spatial Filtering?
What Is Maximum Filter And Minimum Filter?
Name The Categories Of Image Enhancement And Explain?
Solve the Differential equation. xydx+dy=0
What is Hue and saturation?
Why might a commercial GC decide to self-perform construction of concrete sidewalks instead of hiring a subcontractor for the work?
Which of the following is NOT a magnetic dipole when viewed from far away? a) A permanent bar magnet. b) Several circular loops of wire closely stacked together with the same current running in each...
The internal combustion petrol engine can be modeled on the Otto cycle, the four stages consist of (a) An adiabatic compression from V1 to V2, (b) An isochoric (constant volume) pressure increase,...
A monatomic gas of molecular weight M is held at low pressure and temperature T. The velocity distribution function has the form Write down the value of ?, and derive the form of the energy...
Explain why the distribution of speeds of molecules emerging through a small hole in an effusive molecular beam source is not a Maxwellian distribution
Regarding research and experimental expenditures, which of the following are not qualified expenditures? 3 a. costs of ordinary testing of materials b. costs to develop a plant process c. costs of...
Port Ormond Carpet Company manufactures carpets. Fiber is placed in process in the Spinning Department, where it is spun into yarn. The output of the Spinning Department is transferred to the Tufting...
Oct. 31: Paid salaries, $45,000 ( 75% selling, 25% administrtive). Data table Data table them to retail stores. The company has three inventory items: and floor lamps. RLC uses a perpetual inventory...

A copper sphere having a diameter of 3.0 cm is initially at a uniform temperature of 50C.

Question:

Step by Step Answer:

Lumped Capacity ...View the full answer

Heat Transfer

Students also viewed these Thermodynamics questions