In an air standard Otto cycle the maximum and minimum temperature are 1400 and 15。C. The heat supplied per kg of air is 800 kJ. Calculate, a. the compression ratio; b. the cycle efficiency; c. The ratio of maximum to minimum pressure in the cycle.

Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

In an experiment, how can i change human errors? be specific.