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Power to a cooling fan is turned off when it is turning at 720rpm. The fan makes 1350 revolutions before it comes to rest. Calculate the fan's average angular acceleration and the time it took to come to rest.
An object is placed directly between a large planet and a star. Find the distance from the planet for which the net gravitational force exerted by the planet and by the star on this object is zero. DATA: Mstar= 1.90E+30 kg, Mplanet= 6.90E+25 kg, Dpla..
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. determine the voltage drop from cathode to anode
A 0.75 mm diameter copper wire carries a small current of 3.5 µA. What is the drift speed of the electrons in the wire
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 8°C. 20 Hz
Imagine a figure that shows a system of two masses connected by a string. As m falls a distance h, M accelerates up the plane. What is the work done by friction on the system
Residents of Hawaii are warned of the approach of a tsunami (tidal wave) by sirens mounted on the top of towers. Treating the siren as a point source of sound, and ignoring reflections and absorption, find the intensity level of one siren heard by a..
A capacitor is connected across the terminals of an ac generator that has a frequency of 430 Hz and supplies a voltage of 19 V. Find the capacitance of the second capacitor
One arm of a U-shaped tube (open at both ends) contains water, and the other alcohol. at what height will the water be
The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface 1 has an area of 2.2 m2, while surface 2 has an area of 3.5 m2.
A wire has a length of 6.63 Ã- 10-2 m and is used to make a circular coil of one turn. compute the maximum torque that this coil can experience
q1. a proton is moving at 2.00times105 ms and begins to circle at a radius of 5.00e-3 m. what is the strength of the
A 3.00-k? resistor and a 2.00-?F capacitor are connected in series with an AC generator; What is the average power dissipation in this circuit
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