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A stroboscope is a light that flashes on and off at a constantrage. It can be used to illuminate a rotating object, and ifthe flashing rate is adjusted properly, the object can be made toappear stationary.
(a) What is the shortest time between flashes of light that will make a three-bladed propeller appearstationary when it is rotating with an angular speed of 16.7 rev/s?
(b) What is the next shortest time?
a ball leaves a 0.60 meter high table with an initial horizontal velocity of 2.4 ms. predict the time required for the
In a series L-R-C circuit, the components have the following values: L = 18.0 mH, C = 170 nF, and R = 380 ohms. The generator has an rms voltage of 120 V and a frequency of 1.25 kHz. Determine the average power supplied by the generator. P=_____W Det..
A charge of +2 x 10^-7 C is 10 cm from a charge of -6 x 10^-6 C. Find the magnitude and direction of the force on each charge
Since there is no accommodation and the implant allows for correct distance vision, a corrective lens for close work or reading must be used. calculate the power of the lens in the reading glasses
A charged particle is projected in a uniform electric field between two plates with initial velocity 5x10^3m/s at angle 40 degrees to the x-axis. Its charge is q= -1.0x10^-11 C and mass is m=3.0x10^-14 kg.
A solenoid of length 4.0 cm and diameter 0.93 cm is wound with 165 turns per cm. What is the induced emf in one of the windings
The color of many ceramic glazes comes from cadmium compounds, If a piece of cadmium with mass 65.6 g and a temperature of 100.0°C is dropped into 25.0 cm3 of water at 23.0°C, what will be the final temperature of the system
A bullet of mass 0.002 kg moving at 421 m/s impacts a large fixed block of wood and travels 6.1 cm before coming to rest. find the force exerted by the wood on the bullet
Suppose a flat roof has a surface area of 1.29000×102 m2. What is the force with which the air inside the house pushes the roof upward
When an 78.3-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.08 x 103 J. By how much does the potential energy of a 19.5-kg child increase when the child climbs a normal st..
If a car of mass 1000 kg is moving along a highway at 92 km/h, what is car's kinetic energy as determined by someone standing alongside the highway.
Consider a mixed RLC circuit where an ideal capacitor of capacitance C = 60.0 ?F, What is the resonance frequency of this mixed RLC circuit
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