Physics, 21.09.2019 02:10 prettygirllniyiaa
Apolice officer is driving due north at a constant speed of 29 m/s rel- ative to the ground when she notices a truck on an eastāwest highway ahead of her, driving west at high speed. she finds that the truckās speed relative to her car is 48 m/s (about 110 mph). (a) sketch the vector trian- gle that shows how the truckās velocity relative to the ground is related to the police carās velocity relative to the ground and to the truckās veloc- ity relative to the police car. the sketch need not be to scale, but the ve- locity vectors should be oriented correctly and bear the appropriate labels. (b) what is the truckās speed, relative to the ground?
Answers: 2
Physics, 22.06.2019 00:00
Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?
Answers: 1
Physics, 22.06.2019 02:50
Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450Ā°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)
Answers: 3
Physics, 22.06.2019 05:00
At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2iā4jā2k. find an equation for the position vector of the particle.
Answers: 2
Physics, 22.06.2019 14:30
Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?
Answers: 2
Apolice officer is driving due north at a constant speed of 29 m/s rel- ative to the ground when she...
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