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A charge of 24.5uC is located at (4.40m, 6.22m), and a charge of-11.2uC is located at (-4.50m, 6.75m). What charge must be locatedat (2.23m, -3.31m) if the electric potential is to be zero at the origin?
A 2.20 kg hoop 2.00 m in diameter is rolling to the right without slipping on a horizontal floor at a steady 2.40{\rm rad/s}. What is the total kinetic energy of the hoop
a gas is admitted to an evacuated 2m3 container at 320 k the gas then undergoes an isobaric expansion to a volume of
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current.
an extremely long nonconducting cylinder has a radius r0. the charge density within the cylinder is a function of the
the solar constant is the flux of the suns radiation at the top of the earths atmosphere. calculate its value assuming
Two upward wave pulses are generated at opposite ends of a string and travel toward each other. find the maximum displacement of any particle of the string
A skier of mass 70kg starts on top of a frictionless hill of height 10m. Once the skier reaches the bottom the snow is mixed with sand and no longer frictionless. how far will the skier travel before he stops
An electron with a speed of 3.0x10^6m/s moves into a uniform electric field of magnitude 1.0x10^3 N/C. How far does the electron travel before it is brought to rest
An iron casting containing a number of cavities weighs 23137.8 N in air and 19020.3 N in water. What is the total volume of all the cavities in the casting
question1a hot-air balloon is downward at a rate of 2.4 when a passenger drops a camera. if a camera is 48 above the
If a 200 kg, 3 m radius merry-go-round was spinning at 1 rev/s and you dropped a 25 kg bag of sand vertically onto the edge of the platform, what is the angular speed
A 0.45 V potential difference is maintained across a 1.3m length of tungsten wire that has a cross-sectional area of 0.67 mm2 and the resistivity of the tungsten is 5.6 ×10−8 · m. What is the current in the wire?
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