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In a region of space, the electric field E→ = Eoxi^ + Eoyj^). Consider an imaginary cubical volume of edge 'a' with its edges parallel to the axes of coordinates. Now,
(A) the total electric flux through the faces 1 and 3 is Eoa3
(B) the charge inside the cubical volume is 2εoEoa3
(C) the total electric flux through the faces 2 and 4 is 2E0a3
(D) the charge inside the cubical volume is εoEoa3
The resistance of a very fine aluminum wire with a 20.0um* 20.0um square cross section is 1000 ohms. How many turns of wire are needed
What is the ratio of the cardinal's magnitude pc of momentum to the magnitude pb of the baseball's momentum?
A Carnot engine operates between the temperatures 420 K and 300 K. How much heat must be given to the engine to produce 2500 J of work
a coil of radius 75 mm has 250 turns and carries a current of 2.2 a.find the magnetic field at the centre of the coil
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.20 times 106 kg/s. If two thirds the potential energy of this water were converted to electric energy, how much power would be produced by these falls?
When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall. (a) What is the mirror's focal length? (b) How tall is the pencil's image if the pencil is move..
The pulling force has a magnitude of 81.5 N and is directed at an angle of 30.0° above the horizontal. Identify the coefficient of kinetic friction.
A speed skater goes around a turn that has a radius of 36 m. The skater has a speed of 12 m/s and experiences a centripetal force of 461 N
Waly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. What is the actual maximum efficiency of his engine
A LASIK vision correction system uses a laser that emits 10 ns-long pulses of light, each with 2.5 mJ of energy. What is the average power of each laser pulse
administrative expenses are avoidable if product R97C is discontinued. Illustrate what would be the effect on the company's overall net operating income if product R97C were dropped?
A coin rests on the bottom of a beaker filled with an unknown liquid. A ray of light from the coin travels to the surface of the liquid and is refracted as it enters into the air. How fast is the light traveling in the liquid
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