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Calculate the energy stored in a 60 pF capacitor
(a) when it is charged to a potential difference of 2.0Kv and
(b) when the charge on the plate is 30nC.
A bolt is dropped from a bridge under construction, falling 92m to the valley below the bridge. (a) How much time does it take to pass through the last 26 percent of its fall? What is its speed (b) when it begins that last 26 percent of its fall a..
calculate a characteristic reynolds number for an aircraft cruising at 1000kmhr. make any assumptions necessary and
In some places, insect "zappers," with their blue lights, are a familiar sight on a summer's night. how many turns are in the secondary coil
A charged capacitor is connected to an ideal inductor. At time t = 0, the charge on the capacitor is equal to 6.00 µC. What is the amplitude of the current at that same instant
A 350g object on a frictionless, horizontal lab table is pushed against a spring of force constant 40.0N/cm, How fast is the object moving when it has gained half of the spring's original stored energy
the thermal expansion coefficient of copper is about 1.7 x 10-5 oc. a copper cable has a length of 20 m early in the
A car moving at 35 m/s approaches a stationary whistle that emits a 220Hz sound. The speed of sound is 343m/s. What is the frequency of sound heard by the driver of the car
a jet airliner moving initially at 300 mih due east enters a region where the wind is blowing at 105 mih in a direction
A transformer with a turns ratio (secondary/primary) of 1:15 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.
If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. Estimate the net rate at which your body loses energy by radiation to the night sky under these conditions
A 1,200-N crate rests on the floor. How much work is needed to move it at constant speed 4.8 m along the floor against a friction force of 240 N? How much work is needed to move it at constant speed the same distance vertically?
A small package rests on the horizontal dashboard of a car. If ?s = 0.302, what is the minimum acceleration of the car
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