Consider a block of mass m attached to two springs, one on the left with spring constant k1 and one on the right with spring constant k2. each spring is attached on the other side to a wall, and the block slides without friction on a horizontal surface. when the block is sitting at x = 0, both springs are relaxed. write newton’s second law, f = ma, as a differential equation for an arbitrary position x of the block. what is the period of oscillation of this system?

Why there is no inductive reactance in dc circuits

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

Simple machines can a. increase force only b. decrease force only c. increase or decrease force