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An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 1.6 x 10-7 C/m2, and the plates are separated by a distance of 1.3 x 10-2 m. How fast is the electron moving just before it reaches the positive plate?
An engine performs 4000 joules of work in 10 seconds. What is the power output in kilowatts and in horsepower
If two successive overtones of a vibrating string are 420 Hz and 480 Hz, what is the frequency of the first overtone
A horizontal force of 2.8 N is applied to a 1.2- kg radio, initially at rest on a table with a level surface. What is the coefficient of friction if it just begins to move
a sinusoidal transverse wave moves along a stretched string in the +j direction with amplitude 5 cm, wavelength 2 m, and wave speed 200 m/s. Write a possible wave function for the wave with an explanation
Find (a) the wavelength in the medium, (b) the optical path length, and (c) the phase difference after moving that distance, with respect to light travelling the same distance in a vacuum.
question1a plane leaves the airport in galisteo and flies 170 km at 68deg east of north and after that changes
a train traveling at v0 25.0 ms begins to brake by applying a velocity-dependent instantaneous acceleration av alpha
An electron enters a region of space containing a uniform 0.0000227-T magnetic field. Its speed is 115 m/s, Find the radius r of the electron\'s path, and the frequency f of the motion
It requires 78.73 J of work to lift a rock to a height of 4.03 m. What is the mass of the rock
a student is reading material written on a blackboard. her contact lenses have a refractive power of 57.50 diopters; the lens to retina distance is 1.750cm. how far in meters is the blackboard from her eyes
A consumer upset with the latest trend of postal rate increases has decided to try to send letters by balloon even though they may not reach their intended destination
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
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