15. A ball is dropped on a slope like the one shown in Figure 2.116a. A. If we assume that the surface is frictionless, what will be the velocity at point P? (Ignores the effects of rolling and rotating the ball) b. The same ball is dropped on a slope (without friction) as shown in Figure 2.116b. What is the velocity at point Q? c. Explain why the ball reaches point P faster than point Q. d. But if the balls roll down the slopes. Suggest how this fact affects your responses.

According to the tide table below what time of day will the highest tide occur?

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)

Which model displays the change in a gas when the temperature of the gaseous system decreases?