Recent questions in Engineering Physics

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jojo06-avatar
over 12 years ago

A loose spiral spring carrying no current is hung from a ceiling. When a switch is thrown so that a current exists in the spring, how do the coils move?

A loose spiral spring carrying no current is hung from a ceiling. When a switch is thrown so that a current exists in the spring, how do the coils move? A) farther apart B) not at all C) closer together D) getting wider i know the answer C, But i don't why choice it??
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rahas-avatar
about 6 years ago

A very long, uniformly charged cylinder has radius R and linear charge density λ.

  • A) Find the cylinder's electric field strength outside the cylinder, r≥R. Give your answer as a multiple of λ/ε0.
  • B) Find the cylinder's electric field strength inside the cylinder, r≤R. Give your answer as a multiple of λ/ε0.
Express your answers in terms of some or all of the variables R, r, and the constant π.
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How to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.

how to find angle of divergence experimentally using laser? how to draw graph and take readings in Holmarc set up.
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Electric feild

It has been reported that in some instances people near where a lightning bolt strikes the earth have had their clothes thrown off explain why might that happen
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Physics

. A quarterback throws a football straight toward a receiverwith an initial speed of 20.0 m/s, at an angle of 30.0°above the horizontal. At that instant, the receiver is 20.0 rnfrom the quarterback. In what direction and with whatconstant speed should the receiver run in order to catchthe football at the level at which it was thrown?
2

Physics

Your grandfather is copilot of a bomber, flying horizontally over level terrain, with a speed of 275 m/s relative to the ground, at an altitude of 3000 m. (a) The bombardier realeses one bomb. how far will it travel horizontally between it release and its impact on the ground? neglect the effects of air resistence.(b) Firing from the people on the ground suddenly in capacitates the bombardier before he can call, "Bombs away!" Consequently, the pilot maintains the plane's original of course, altitude,and speed through a storm of flak. where will the plane be when the bomb hits the ground? (c) The plane has a telescopic bomb sight set so that the bobm hits the target seen in the sight at the time of release. At what angle from the vertical was the bomb sight set?
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Engineering Physics