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An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through a slot at the outside edge of the wheel, as in Fig. 10-31, travels to a distant mirror, and returns to the wheel just in time to pass through the next slot in the wheel. One such slotted wheel has a radius of 5.0 cm and 220 slots at its edge. Measurements taken when the mirror is L = 620 m from the wheel indicate a speed of light of 3.0 x 105 km/s.
(a) What is the (constant) angular speed of the wheel?
(b) What is the linear speed of a point on the edge of the wheel?
A parallel plate capacitor has plates of area 2.0*10^3 and plate separation 1.0*10^4m. find the capacitance of this system if air fills the volume between the plates.
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg, What is the speed of the ?-particle and What is the radius of its circular path
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A woman pulls a loaded sled of mass m = 75 kg along a horizontal surface at constant velocity
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A long string carries a wave; a 4.00-m segment of the string contains four complete wavelengths and has a mass of 180 g. Determine the power being supplied to the string
An air mass has a temperature of 68F and 970hPa with a mixing ratio of 5 g/kg. Without any condensation or mixing the air mass now has a temperature of 50F and a pressure of 750hPa. Find the initial and final values of a) r, b) T(dew), and c) vapor p..
A 20 cm long organ pipe is filled with air and is open at one end and closed at the other. The velocity of sound in air at 0°C is 331 m/s. What is the wavelength of the fundamental frequency
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