Problem 2.1 the vigorous stirring of 0.60 kg of a thick liquid causes its temperature to increase by 3.0°c with negligible change in volume. the specific heat of the liquid is c'= 24 kj kg-1 k-1 (a) find the work done on the fuid (i. e, ind -w). (b) if the stirring is done by a 75 w (0.10 hp), how long was the liquid stirred?

The atoms in a sidewalk on a hot summer day are vibrating the atoms in the sidewalk on a freezing day in winter. a. more rapidly than b. more slowly than c. at the same speed as

What are chlorofluorocarbons and what impact do they have on the atmosphere?

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c