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Two charges q1 = 6 µC, q2 = -49 µC, are L = 19 cm apart. A third charge is to be placed on the line between the two charges. How far from q1 should the third charge be placed so that the net electric force on the third charge is minimized?
what is the strength of the electric field 4.0cm from a small glass bead that has been charged to positive 4.0cm?
A stone is dropped from the top of a cliff at t=0. The splash it makes when striking the water below is heard 6 seconds after it is dropped (i.e. at t=6 sec). How high is the cliff? (i.e. find 'h') suppose that the speed of sound in air is 340m/s ..
A flower pot falls from the roof and passes in front of a window of height h as it falls to the ground to smash to pieces. If the flower pot takes a time T to pass from top to bottom in front of window. Find the (as-yet-unknown) height H from the ..
assume that the microwave radiation has a wavelength of 11.2 cm. How many photons are required to heat 235 mL of coffee from 25.0 ^circ rm C to 62.0 ^circ rm C.
Calculate the amount of work (in electron-volts) it would take to move an electron from 11.6 to 13.4 away from a +3.50 point charge.
When his mom asked him why he is smoking he told her, "Don't worry mom, it is not that bad after all." Which term is being described in Trent's situation.
A metal bar, pivoted at one end, oscillates freely in the absence of a magnetic field. But, when it oscillates between the poles of a magnet, its oscillations are quickly damped. Why? (Such magnetic damping is used in a number of practical devices..
A point P is on a rim of a wheel of radius 2.0m. At time t=0 wheel is at rest and P is on the x-axis. The wheel undergoes a uniform angular acceleration of 0.01 rad/s2 about the center O. Find out the time t, when P returns to an original position on..
Find maximum height reached by the diver using the equation of motion.
Two identical aluminium objects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at the higher potential.
If a 2.00{rm kg} mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer? Imagine the speed of sound in air to be 340 m/s.
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