While working out, you decide it would be funny to throw a 7.0 kg medicine ball at your friend, who is not expecting it. At the time you throw the ball towards your friend, who has a mass of 55 kg, they are walking towards you (in the opposite direction of the ball) at 0.5 m/s. If you threw the ball at 10 m/s and they reacted quickly enough to catch it, what is the combined final velocity of your friend and the ball?

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

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)

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.