A piston releases 18 J of heat into it’s surroundings while expanding from 0.0002 m3 to 0.0006 m3 at a constant pressure of 1.0 x 10 5 pa. What are the correct values for heat and work for the piston? A. Q = +18 J, W = +40 J

B. Q = -18 J, W = -40 J

C. Q = +18 J, W = -40 J

D. Q = -18 J, W = +40 J

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive