Physics, 24.11.2020 17:50 danielamejia13
You have a summer job with the telephone company working in a group investigating the vulnerability of underground telephone lines to natural disasters. Your task is to write a computer program which will be used determine the possible harm to a telephone wire from the high electric fields caused by lightning. The underground telephone wire is supported in the center of a long, straight steel pipe that protects it. When lightening hits the ground it charges the steel pipe. You are concerned that the resulting electric field might harm the telephone wire. Since you know that the largest field on the wire will be where it leaves the end of the pipe, you calculate the electric field at that point as a function of the length of the pipe, the radius of the pipe, and the charge on the pipe
Answers: 2
Physics, 22.06.2019 00:00
A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?
Answers: 1
Physics, 22.06.2019 01:00
An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75
Answers: 2
Physics, 22.06.2019 03:50
Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
Answers: 1
Physics, 22.06.2019 06:00
Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves
Answers: 3
You have a summer job with the telephone company working in a group investigating the vulnerability...
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