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1. A plate capacitor (filled with air) has a voltage of 5 V when charged to 80 mC. It is then charged some more to a new voltage of 12 V. What is its new charge?
The same capacitor is left connected to the 12 V voltage source, but a material with a dielectric constant of 4 is inserted between its plates. What is its new charge?
2. A 0.209 F capacitor is desired. What area must the plates have if they are to be separated by a 2.07 mm air gap?
Two adjacent sources each emit a frequency of 800 Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved so that an observer in front of the sources hears no sound?
There are two identical, positively charged conducting spheres fixed in space, find the initial charge on each sphere, q1 and q2 if initially q1
My car has rear defrosters that are made of 13 wires embedded into the rear window. They can melt a thin layer of ice, What is the cross-sectional area of each wire
An arrow is shot 30 degrees above horizontal with an initialvelocity of 49 meters/second. What is the maximum height the arrow reaches.
A single slit has aperture width 4.54 μm and lies 14.9 cm from a screen. If light of wavelength 420 nm falls on the slit, find the width of the central maximum in centimeters
an certain resistor dissipates 0.5 w when connected to a 3 v potential difference. when connected to a 1 v potential
If a pendulum is oscillating at an angle Φo=60 degree, compute by what percent the period deviates from its small angle limit
as you get closer, you notice that it is GODZILLA!! and he sees you! and begins to come after you!! if you are now moving away at 15 m/s, what is the new frequency you detect from GODZILLA
question an auto race is held on a circular track. a car completes one lap in a time of 19.3 s with an average
A dipole moment is located in a uniform electric field oriented along an unknown direction. Find what was the initial angle between the direction of the dipole moment and the direction of the electric field
The average density of the planet Saturn is 688 kg/m3. The acceleration of gravity on its surface is 11.20 m/s2. Calculate the average radius of Saturn
A 650 kg elevator startsfrom rest and moves upward for 4.30 swith constant acceleration until it reaches its cruising speed,1.84 m/s. What is the average power during an upward cruise with constantspeed
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