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A capacitor has a capacitance of 2.1410-8 F. In the charging process, electrons are removed from one plate and placed on the other plate. When the potential difference among the plates is 440 V, how many electrons have been transferred?
A circuit contains six 205 ohm lamps with 60 W bulbs and a 9 ohm heater connected in parallel. voltage across the circuit is 120 V.what is the current in the circuit when four lamps are turned on.
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 275 kg · m2, What is the new angular speed of the merry-go-round
question the handle of a grinding wheel goes around a circle with a circumference of 1.2m. if it requires a force of
lets say you take an ordinary wire coat hanger and straighten out the hook shaped part that normally hangs over the
In order for a car to turn along a curve in the road, it must experience a centripetal acceleration (according to an inertial observer). what force is responsible for providing this acceleration
Suppose an object is placed at the edge of a recordplayer. The record player has a diameter 30.0cm and rotatesat 33.3 RPM (revolutions per minute). how fast is the outside edge of the record moving
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
The air inside a bicycle tire pump has 243 joules of work done on it as 66.5 joules of heat is conducted away from it
Suppose you need to image the structure of a virus with a diameter of 50 nm, For light of wavelength 2.5nm, what is the energy (in eV) of a single photon? In what part of the electromagnetic spectrum is this
A 50 g block of ice at 0 °C rests in a pan in a room at 22 °C and melts completely. What is the entropy change (in cal/K) in the ice system
Find the magnitude of the electron acceleration. Under an influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
What is speed of the resulting ball of clay
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