What is the rate of heat flow through the bar

Assignment Help Physics

Reference no: EM13304155

Two thermal reservoirs are connected by a solid copper bar. The bar is 3 m long, and the temperatures of the reservoirs are 63.0°C and 32.0°C. (The thermal conductivity of copper is 386 W/(m K).)

(a) Suppose the bar has a constant rectangular cross section, 10 cm on a side. What is the rate of heat flow through the bar?

(b) Suppose the bar has a rectangular cross section that gradually widens from the colder reservoir to the warmer reservoir. The area A is determined by
A = (0.010 m2)[1.0 + x/(3.0 m)],
where x is the distance along the bar from the colder reservoir to the warmer one. Find the (rate of) heat flow.

(c) Find the rate of change of temperature in °C/m with distance at the colder end, at the warmer end, and at the middle of the bar.

Reference no: EM13304155

Questions Cloud

Statutory mandatory life sentences : Pursuant to recent Supreme Court decisions that Juveniles may not be sentenced to death and Juveniles may not be sentenced to "statutory mandatory" life sentences without the possibility of parole, how are states going to have to deal with their pres..

Determine the velocity at x of a particle moves along x-axis : A particle moves along the positive x-axis with an acceleration in meters per second squared which increases linearly with x expressed in millimeters, as shown on the graph for an interval of its motion.

Calculate the pressure variation : Calculate the pressure variation corresponding to a sound insensity of 10-16 W/cm2

Which of the preceding policies would you recommend : Does a 2011 dividend of $9 million seem reasonable in view of your answers to parts a and b? If not, should the dividend be higher or lower?

What is the rate of heat flow through the bar : Two thermal reservoirs are connected by a solid copper bar. The bar is 3 m long, and the temperatures of the reservoirs are 63.0°C and 32.0°C. What is the rate of heat flow through the bar

Find what is maximum grade the vehicle could ascend : a 3200-lb car (Cd = 0.35, Af = 25ft^2, and p= 0.002378 slugs/ft^3) has 14-inch-radius wheels, a drivetrain efficiency of 93%, an overall gear reducation ratio of 3.2 to 1, and drive axle slippage of 3.5%. the engine develops a maximum torque of 21..

What is your reaction to hamlet’s soliloquy : What is your reaction to Hamlet’s soliloquy? Do you sympathize with his situation? Do you see him as self-absorbed or self-reflective? Explain your responses. Why do you think this play continues to be relevant to contemporary audiences?

Estimate the number of neon atoms having : A sealed container contains 7 moles of neon gas at STP. Estimate the number of neon atoms having speeds in the range from 188.0 m/s and 192.0 m/s

Can contractor claim that liquidated damages should in limit : Can a contractor claim that liquidated damages should be limited Because of political unrest, only 20% of rooms are occupied. Liquidated damages are set to $30000 per day -> reasonable amount Contractor is late 15 days.

User Account

All Pages