Determine the minimum applied force p required to move wedge a to the right. the spring is compressed a distance of 175 mm. neglect the weight of a and b. the coefficient of static friction for all contacting surfaces is î¼s=0.35. neglect friction at the rollers.

An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?