When you hold one end of a solid rod in a fire, the other end becomes hot because of heat convection

a. True
b. False
Indicate whether the statement is true or false


False

Physics & Space Science

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Four things that the resistance of a conducting material depends on are __________, __________, __________ and ___________

Fill in the blank(s) with correct word

Physics & Space Science

Two charges lie on the x axis, +2q at the origin, and -3q at x = 5.0 m. The point on the x axis where the electric potential has a zero value (when the value at infinity is also zero) is

a. 1.0 m. b. 2.0 m. c. 2.5 m. d. 3.0 m. e. 4.0 m.

Physics & Space Science

what are the two forces that compete with each other to determine the ultimate fate of a star?

What will be an ideal response?

Physics & Space Science

Ethanol is to be condensed around cool 10ºC tubes of 1 cm outside diameter and at a 50 saturation temperature of 78.5ºC. Plot the heat transfer per unit length on horizontal tubes arranged as shown in Figure 10-17b and as predicted by Equation 10-49 as the number of tubes is increased. How does this result compare to the heat transfer predicted for a single tube or for a dripping, in-line tube arrangement as shown in Figure 10-17c? Ethanol has a heat of vaporization hnfg of 842 J/kg at atmospheric pressure.



Physics & Space Science