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It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude - by using his pulse to time the period of swinging lamps in the cathedral as they swayed in the breeze. Suppose that one oscillation of a swinging lamp takes 5.5s.
How long is the lamp chain?
What is an average power output of the laser. What is the rms value of the electric field in the beam.
If no, then what will happen if 30 kilocalories of heat is added to the water? Give a numerical result as part of your answer.
A boat moves through the water with two forces acting on it. One is a 1500 N forward push by the water on the propeller, What is the acceleration of the 1400 kg boat
Two charged bodies exert a force of .145N on each other. If they are now moved so they are one fourth as far apart, what force is exerted.
What mass (in grams) of steam at 100°C must be mixed with 251 g of ice at its melting point, in a thermally insulated container, to create liquid water at 66.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, an..
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
A "1m" mercury germicide lamp emits 50 Watt of 0.2537?m light through its quartz tube. compute the frequency of this light
What is the horizontal distance the airplane engine falls. find out the time that was recorded on Earth.
A transverse electromagnetic plane wave with a frequency of 2.84 MHz travels directly away from you (- z direction). At time t = 0, your magnetic field detector measures a magnetic field of 4.57 × 10-8 Tesla pointing down (- y direction) that further..
Find out the change in entropy of the system
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. What is the power of one laser pulse
A 563 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 2.9 meters
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