Asolid block of mass m2 = 0.88 kg, at rest on a horizontal frictionless surface, is connected to a relaxed spring (with spring constant k = 146 n/m whose other end is fixed. another solid block of mass m1 = 1.25 kg and speed v1 = 2.40 m/s collides with the 0.88 kg block. if the blocks stick together, what is their speed immediately after the collision?

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)