Physics, 08.07.2019 16:20 pikachu4111
Two traffic signal systems are being considered for an intersection. one system costs $32,000 for installation and has an efficiency rating of 78%, requires 28kw power (output), incurs a user cost of $0.24 per vehicle, and has a life of 10 years. a second system costs $45,000 to install, has an efficiency rating of 90%, requires 34 kw power (output), has a user cost of $0.22 per vehicle, and has a life of 15 years. annual maintenance costs are $75 and $100, respectively. marr = 10% per year. how many vehicles per year must use the intersection to justify the second system when electricity costs $0.08/kwh?
Answers: 2
Physics, 22.06.2019 14:00
Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.
Answers: 3
Physics, 22.06.2019 15:30
Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?
Answers: 2
Physics, 22.06.2019 16:00
Apersons beliefs and general outlook, which act like filters on the information they receive are called ?
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