Physics, 21.09.2019 05:20 kaygirlnelson6258
Aperson driving her car at 48 km/h approaches an intersection just as the traffic light turns yellow. she knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection (fig. 2-29). should she try to stop, or should she make a run for it? the intersection is 15 m wide. her car's maximum deceleration is -7.0 m/s2, whereas it can accelerate from 48 km/h to 70 km/h in 6.6 s. ignore the length of her car and her reaction time. if she hits the brakes, how far will she travel before stopping?
Answers: 1
Physics, 22.06.2019 12:10
Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.
Answers: 3
Physics, 22.06.2019 13:20
Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.
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Physics, 22.06.2019 16:00
The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?
Answers: 3
Physics, 22.06.2019 19:30
Which of the following compounds would be primarily ionic? methane, ch4, ammonia nh3, calcium chloride, cacl2, or carbon dioxide, co2
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Aperson driving her car at 48 km/h approaches an intersection just as the traffic light turns yellow...
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