Physics, 21.08.2019 01:10 mehnamejet92
Aflat, circular, steel loop of radius 75 cm is at rest in a uniform magnetic field. the field is perpendicular to the plane of the loop. the field is changing with time, according to an exponential function: b(t)=(1.4t) e- (0.057sec-1)t. when is the induced emf equal to 5% of its initial value? 170 msec 245 msec 52.6 msec o 39.5 msec
Answers: 1
Physics, 21.06.2019 15:30
The four giant gas points that are made primarily of lightweight elements are
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Physics, 22.06.2019 01:00
An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10
Answers: 3
Physics, 22.06.2019 02:00
Chapter 23, problem 075 the figure shows a geiger counter, a device used to detect ionizing radiation (radiation that causes ionization of atoms). the counter consists of a thin, positively charged central wire surrounded by a concentric, circular, conducting cylindrical shell with an equal negative charge. thus, a strong radial electric field is set up inside the shell. the shell contains a low-pressure inert gas. a particle of radiation entering the device through the shell wall ionizes a few of the gas atoms. the resulting free electrons (e) are drawn to the positive wire. however, the electric field is so intense that, between collisions with gas atoms, the free electrons gain energy sufficient to ionize these atoms also. more free electrons are thereby created, and the process is repeated until the electrons reach the wire. the resulting "avalanche" of electrons is collected by the wire, generating a signal that is used to record the passage of the original particle of radiation. suppose the radius of the central wire is 24 âµm, the inner radius of the shell 2.3 cm, and the length of the shell 14 cm. if the electric field at the shell's inner wall is 2.8 ă— 104 n/c, what is the total positive charge on the central wire?
Answers: 1
Physics, 22.06.2019 05:00
Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock
Answers: 3
Aflat, circular, steel loop of radius 75 cm is at rest in a uniform magnetic field. the field is per...
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