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An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.0 MJ when the flywheel is rotating at 1.4×10^4 revolutions per minute.
What is the moment of inertia of the flywheel?
K=...?... kg*m^2
Two large, flat metal plates are separated by a distance that is very small compared to their height and width. Find the field outside the plates on either side
A weather satellite encircles the earth at an orbital speed of 6200 m/s. How high above the earth's durface does it orbit
A charged particle moves 19 mm in electric field with magnitude of 242 N/C If electrical potential energy of moving charge decreases by 91.3 x 10^-19 J due to this motion what is the charge of this moving particle
A mass m1 = 1 kg rests on top of a mass m2 = 5 kg which is attached to a spring (k = 50 N/m), Determine the maximum amplitude of the motion such that the top mass does not slip
While snorkeling you hear a dolphin's sound as it approaches at 5.00 m/s. what is the actual frequency being emitted
Compute the voltage drop along a 23 length of household no. 14 copper wire (used in 15- circuits). The wire has diameter 1.628 and carries a 12 current.
200 Joules of heat flows into a 35 g sample. If the temperature increases by 10°C, then what is the heat capacity of the sample
A rocket with a mass of 2.9×10^6 kg has a relativistic kinetic energy of 2.5×10^23 J. How fast is the rocket moving
Ultrasound intensity level: Beta = 10Log (I2/I1), I1 and I2 = intensity at different locations/times An ultra sound signal is sent under sea water (v=1530m/s) to detect the location of an object. Determine the location of the object from the source
A variable force of the form F=3x2 + 2x + 5 N acts on a 2 kg object as it moves from x = 2 m to x = 3 m. How much work is done by this force
find the coefficient of kinetic friction between the crates and the table.
Coin is placed 14.0 from the axis of the rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on turntable until a rate of 40.0 (revolutions per minute) is reached, at that point the coin s..
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