Which statements best describe the motion of car a
and car b? check all that apply.
position vs time
for two cars
car a and car b are both moving toward the origin.
car a and car b are moving in opposite directions.
car a is moving faster than car b.
c car a and car b started at the same location.
car a and car b pass each other at the crossover
point on the graph.
position (m)
time (s)

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

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)

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.