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Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 3.83 ?C/m and are 5.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane containing the two wires?
When a tuning fork of frequency 360 Hz is held above a tube filled with water the resonances are found when the water level is at 25cm and 75cm
A golf club strikes a 0.047-kg golf ball in order to launch it from the tee. With what speed does the ball leave the club
A laser beam whose wavelength is 681 nm falls on a barrier containing a pair of very narrow slits. A screen is located 2.61 m from the slits. find the separation between the centers of the two slits
An eyepiece of 2.6- cm focal length and an objective of 0.32- cm focal length are used in a standard microscope
A hunter wishes to cross a river that is 1.4km wide and flows with a speed of 5km/h parallel to its banks.
In a game of pool, a cue ball with an initial velocity of 1.25 m/s directed to the right (along the +x-axis) collides with the five ball, Find the cue ball's final velocity
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
An audio amplifier provides an alternating rms potential difference of 15.0V. A loudspeaker connected to the amplifier has a resistance of 10.4 ohm. what is the rms current in the speaker
A projectile proton with a speed of v collides elastically with a target proton initially at rest. what is the speed of the projectile proton
A barge floating in fresh water (? = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 650 m2, Find the mass of the coal in kilograms
A 30 ohm resistor has a voltage difference of 3 volts across its leads. What is the power being dissapated in the resistor
A bar magnet is held above the center of the coil with its north pole pointing down. What is the direction of the induced current in the coil
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