Two students are discussing the motion of the dart-block system at the instant it reaches height H. The students make the following statements: Student 1: The speed of the system at height H is zero. Since it is moving in a circular motion and centripetal acceleration is given by, the acceleration must also be zero. Student 2: The acceleration of the system at height H can’t be zero, or the system would not swing. The acceleration must be equal to g at height H.

Which underlined phrase or phrases, if either, are correct about student 1's statement? If neither phrase is correct, write "none."Read more on Sarthaks. com -

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)

Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity