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The ultrasonic transducer used in medical ultrasoundimaging, is a very thin disk ( m =0.10g) driven back and forth in SHM at 1.0 MHz by an electromagnetic coil. The maximum restoring force that can be applied to the disk without breaking it is 40,000 N. What is the maximum oscillation amplitude that won't rupture the disk? What is the disk's maximum speed at this amplitude?
A circuit contains six 240 ohm lamps with 60 W bulbs and a 10 ohm heater connected in parallel. the voltage across the circuit is 120 V. If the circuit has a fuse rated at 12 A, would it melt if everything is on.
An atomic nucleus of mass m travelling with speed v collides elastically with a target particle of mass 2.000m (at first at rest) and is scattered at 90.
35MW of power at 45kV (rms) arrives at a town from a generator via 5.0? transmission lines. Calculate the emf at the generator end of the lines
A pendulum is made with a 4.0 kg mass suspended at the end of a thin rod. What is the length of the thin rod
A 5.0 megawatt windmill has three 45 m-long blades that can be approximately viewed as straight rods. If the rotational speed of the rods is 6 rpm, what is the mass of each rod
A gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft
on turning a corner ,a motorist rushing at 44m/s find a child on road 100m away. he applies the brakes so as to stop the motorcar within 1m of child. calculate the time required to stop.
Argon is a monatomic gas whose atomic mass is 39.9 u. The temperature of eight grams of argon is raised by 71 K under conditions of constant pressure. how much heat is required
A 186 watt motor is used to lift a 114kg container to a height of 6m. How much time does it take to lift the container with the motor.
In the Millikan oil-drop experiment illustrated in the figure below, an atomizer is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates, Estimate the radius of an oil drop of density 854 kg/m3 for which it..
Wildlife biologists fire 20-g rubber bullets to stop a rhinoceros charging at 0.81m/s. What impulse does each bullet deliver
Evaluate the heat loss per meter for each of the combinations you can figure out. Summarize the result in a graphical way, such as a table, such that they are easy to read and understand.
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