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A pendulum consists of a 3.7 kg stone swinging on a 4.4 m string of negligible mass. The stone has a speed of 8.2 m/s when it passes its lowest point.
(a) What is the speed when the string is at 61 ? to the vertical?
(b) What is the greatest angle with the vertical that the string will reach during the stone's motion?
(c) If the potential energy of the pendulum-Earth system is taken to be zero at the stone's lowest point, what is the total mechanical energy of the system?
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Regarding the Earth and a cloud layer 750m above the Earth as the "plates" of a capacitor, calculate the capacitance. Suppose cloud layer has an area of 1 km2 and that the air between cloud and ground is pure and dry.
100.0 W tungsten filament bulb generates 95.0 W of heat, which dissipated through glass bulb which has radius of 3.00 cm and 0.500 mm thick. If thermal conductivity of glass is 0.836 W/m°C, determine difference in temp. between inner and outer sur..
A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon). how many tanks of gas will you use to drive 1600 km
The ferromagnet gadolinium has a Curie temperature of 298 K and each atom has J=7/2 and g=2. Find the value of the molecular field at low temperatures
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