Physics

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Early AM radios required very long antennae wires. FM antennae are often approximately a meter in ... Started by geoffrey	1 Replies 109 Views	Jul 27, 2018 by mirabriestensky
A vertical wire carries a current straight up in a region where the magnetic field vector points due ... Started by berenicecastro	1 Replies 163 Views	Jul 27, 2018 by Jadwiga9
The thermal conductivity of concrete is 0.80 W/m-C and the thermal conductivity of wood is 0.10 ... Started by Zoey63294	3 Replies 103 Views	Jul 27, 2018 by macybarnes
Daisy (50. kg mass) skates on ice at 4.0 m/s to greet her friend (70. kg mass), who is standing ... Started by jeatrice	1 Replies 62 Views	Jul 27, 2018 by pami445
Consider two current-carrying circular loops. Both are made from one strand of wire and both carry ... Started by armygirl	1 Replies 88 Views	Jul 27, 2018 by ong527
If the newly discovered planet of Krypton has 100. times the mass of the Earth and 100. times the ... Started by abarnes	1 Replies 107 Views	Jul 27, 2018 by sokh
An induced emf is produced in a loop or complete circuit whenever the number of magnetic field lines ... Started by Melani1276	3 Replies 109 Views	Jul 27, 2018 by hramirez205
A mass of 1000 kg hangs at the end of a steel rod 5.0 m in length. The diameter of the rod is 0.80 ... Started by hbsimmons88	1 Replies 78 Views	Jul 27, 2018 by taylorsonier
Current just enough to cause ventricular fibrillation is A) 1. mA. B) 10. mA. C) 100. mA. D) ... Started by iveyjurea	1 Replies 38 Views	Jul 27, 2018 by AmberC1996
What are the first three harmonics of a string of linear mass density 2.00 g/m and length 0.600 m ... Started by michelleunicorn	1 Replies 68 Views	Jul 27, 2018 by steff9894
An astronaut goes out for a space-walk at a distance above the Earth equal to the radius of the ... Started by LaDunn	3 Replies 123 Views	Jul 27, 2018 by mathjasmine
Which type or types of rock cannot be dated radiometrically? A) igneous and metamorphic B) ... Started by OSWALD	1 Replies 73 Views	Jul 27, 2018 by carojassy25
After seeing a flash of lightning, if one counts the seconds before hearing the thunder, one can ... Started by danielfitts88	1 Replies 84 Views	Jul 27, 2018 by brittiany.barnes
Impedance is the total, or effective, opposition to current that takes into account both resistances ... Started by jessicacav	1 Replies 49 Views	Jul 27, 2018 by Joc
At what temperature is the average kinetic energy of an atom in helium gas equal to 6.21 10-21 J? ... Started by jeatrice	3 Replies 231 Views	Jul 27, 2018 by dpost18
When a 12.0 volt battery is connected to a 6.00 F capacitor: (a) how much energy is stored? (b) ... Started by olgavictoria	1 Replies 162 Views	Jul 27, 2018 by mmpiza
James moves in a circular path (radius 15.0 m) with a speed of 60.0 m/s. His ANGULAR VELOCITY is ... Started by jman1234	1 Replies 282 Views	Jul 27, 2018 by Hikerman221
A constant magnetic field can be used to produce an electric current. Indicate whether the ... Started by panfilo	1 Replies 93 Views	Jul 27, 2018 by cloudre37
The escape speed from the moon is what fraction of Earth's escape speed? (Earth/Lunar mass ratio = ... Started by Pineappleeh	3 Replies 206 Views	Jul 27, 2018 by softEldritch
The search for life in the solar system that is similar to life on Earth is essentially a search for ... Started by scienceeasy	1 Replies 120 Views	Jul 27, 2018 by Danny Ewald
The dedicated third wire on a 3-prong plug is connected to A) ground. B) a fuse. C) a ground ... Started by dmcintosh	1 Replies 97 Views	Jul 27, 2018 by lkoler
A 0.600-mm diameter wire stretches 0.5 of its length when it is stretched with a tension of 20 N. ... Started by abern	1 Replies 108 Views	Jul 27, 2018 by kkenney
A plane is headed eastward at a speed of 156 m/s. A 20.0 m/s wind is blowing southward at the same ... Started by tichca	3 Replies 113 Views	Jul 27, 2018 by jrpg123456
A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N. What is the ... Started by shofmannx20	1 Replies 39 Views	Jul 27, 2018 by asdfasdf
Your motorboat can move at 30 km/h in still water. How much time will it take you to move 12 km ... Started by magmichele12	1 Replies 109 Views	Jul 27, 2018 by katara