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A plane polarized electrodynamics wave travelling in a dielectric medium of refractive index 'n' is reflected at normal incidence from the surface of a conductor. Find the phase change undergone by its electric vector if the refractive index of the conductor is n2=n(1+Ip)
A satellite is orbiting the Earth at a distance of 2.67RE and with a speed of 4.29 km/s. With what speed would the satellite hit the Earth's surface
A small but measurable current of 1.6 10-10A exists in a copper wire whose diameter is 3.1 mm. suppose the current is uniform. Compute the current density. Compute the electron drift speed.
A hiker walks 25 degrees north of east for 200 m, How far north and how far east is he from his starting position
A small coil has a cross section of 4.5 cm2 and consists of 14 turns of wire. If the loop carries a current of 100 mA, what is the torque required to hold the loop
512 g of an unknown metal at a temperature of 15 degrees celsius is dropped into a 100 g aluminum container holding 325
The resistances of the primary and secondary coils of a transformer are 59 and 13 Ω, correspondingly. Both coils are made from lengths of the similar copper wire. The circular turns of each coil have the similar diameter. Find the turn’s ratio Ns/Np.
If the hypotenuse of a right triangle is 6.00cm long, and the opposite is 4.00. What is the angle facing the opposite
A proton, initially traveling in the +x-direction with a speed of 5.50×10^5m/s , enters a uniform electric field directed vertically upward. After traveling in this field for 4.02×10^7s
If 2 waves are traveling through a container with nitrogen gas. The Amplitude of the first wave is .3cm and the amplitude of the 2nd wave is .9cm. Which wave is going fastest and which one has more energy?
a 2.40 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 14.9 ms.
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
Consider a bird that flies at an average speed of 10.7m/s and releases energy from its body fat reserves at an average rate of 3.70W, How far will the bird fly before feeding again
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