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Question1
Two long insulated wires lie in the identical horizontal plane. A current of I = 17.0 A flows toward the north in wire A and a current of 10.0 A flows toward the east in wire B. What is the magnitude and direction of the magnetic field at a point that is h = 4.00 cm above the point where the wires cross.
Question2
A thin layer of magnesium fluoride (n = 1.38) is used to coat a flint-glass lens (n = 1.61). What least thickness should the magnesium fluoride film have if the reflection of 607 nm light is to be suppressed? Imagine that the light is incident at right angles to the film.
A 0.36-kg object connected to a light spring with a force constant of 24.4 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
If a lens with focal length 10 cm is placed 30 cm from an image 3 cm tall, how tall is the resulting image
The work done by an engine equals one-half the energy it expels to a cooler at 0C. what is the temperature of the heater
How much heat does an engine with an efficiency of 26.0% absorb in order to deliver 2.00 kJ of work, How much heat is exhausted by the engine
A geothermal power plant uses geothermal water extracted at 160oC at a rate of 440 kg/s as the heat source and produces 22 MW of net power.
Evaluate the electrostatic energy of two opposite charges
Planet A and Planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than Planet B. What is the ratio of their speeds
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 40 at 20°C. what is the temperature coefficient of resistivity
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
An atom is ionized so that it has only one electron. When the electron drops from the n = 4 shell to the n = 1 shell, What is the atomic number
A 1200-turn coil of wire that is 2.0cm in diameter is in a magnetic field that drops from 0.14T to 0 T in 11ms. What is the emf of the coil
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2πJ • s. Fuzzy has a mass of 2.00 kg and is at first known to be within a pond 1.00 m wide.
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