Which of the following is NOT true for all mechanical waves? •They are made up of oscillations in a medium

•The medium moves parallel to the direction of motion

•They carry energy

•They are made by a vibration

Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?