Physics
Physics, 28.06.2019 09:00, maxi12312345

In d. c circuit power dissipated per unit volume is proportional to: a. currentb. resistancec. square of electric fieldd .electric field

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Physics, 24.06.2019 17:30, emilycarmadelle6653
When a point charge of +q is placed on one corner of a square, an electric field strength of 2 n/c is observed at the center of the square. suppose three identical charges of +q are placed on the remaining three corners of the square. what is the magnitude of the net electric field at the center of the square? a. the magnitude of the net electric field at the center of the square is 6 n/c.b. the magnitude of the net electric field at the center of the square is 0 n/c.c. the magnitude of the net electric field at the center of the square is 4 n/c.d. the magnitude of the net electric field at the center of the square is 8 n/c.e. the magnitude of the net electric field at the center of the square is 2 n/c.
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Physics, 05.07.2019 01:10, pandasarecute53
State clearly the difference (a) between electric potential and clectric field, (b) between electric potential and electric potential energy 22. the si unit for electric potential energy is a) n b) j c) v d) c 23. the si unit for electric potential is e) n 0 j g) v h) c 24. a rock moving through a gravitational field is analogous to a charge moving through an electric field. ) positive ) negative k) neutral continuous distribution of 25. which of the following has the smallest poterntial difference associated with it? m) power supply for tv tube n) flashlight battery o) automobile ignition p) houschold outlet 26. to determine the work done, one can always just simply multiply force time distance. a) true b) false 27. which of these charge configurations was not an example from these sections? c) a sphere of charge d) a ring of charge e) a disk of charge f) two opposite point charges 28. a conductor must be entirely a) true b) false at the same potential in the static case. 29, the electron-yolt is an alternate unit for a) electric potential. b) electric potential energy c) electric current d) electric charge.
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Physics, 05.08.2019 22:20, khynia11
For dry air at a temperature of 0°c and at 1 atm of pressure, electric breakdown occurs when the air is subjected to an electric field with amplitude above about 3.00 mv/m. a high-power laser is shone up into earth's atmosphere, and the laser's associated electric field ionizes the air and turns it into a conducting plasma. assume the conditions of the air are such that an electric field of 3.00 mv/m causes the air to ionize. (a) what will be the intensity (in w/m2) of a laser beam that can produce a field of this magnitude? w/m2 (b) assuming the laser is operating at this maximum intensity, what is the power (in w) delivered in a cylindrical beam with a diameter of d = 4.10 mm? remember that the intensity is defined as power per unit area; solve this relationship for power. w
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Physics, 02.11.2019 04:31, angel0203wilcox
If the voltage across two oppositely charged parallel plates is kept constant, what happens to the relationship between the electric field and the distance between the two plates? a) the electric field is directly proportional to the distance. b) the electric field is inversely proportional to the distance. c) the electric field is independent of the distance. d) the electric field becomes zero if the distance changes.
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