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A coil has resistance R=14Ohms and inductance L=3milliHenries and is powered by a generator with variable frequency and maximum voltage V = 10Volts.(a) At what frequency is the inductive reactance equal to resistance? This is when Z=sqrt(2)*R.(b) What is the average power used by the coil when the generator operates at the frequency you found in (a)?(c) What is the average power used by the coil when the generator operates at 60Hz?(d) What is the average power used by the coil when the generator operates at one-thousand times the frequency in (a)?(e) What is the average power used by the coil when the generator operates at one-thousandth of the frequency in (a)?
As you may have learned when studying the properties of thermal energy, building contractors often install double-glazed windows to prevent thermal energy (\"heat\") from entering/exiting the building, find the shift in path ?x as the light enters ..
What is the speed of a wave on a string that has a mass of 9.6 kg and a length of 7.2 m while a 7.0 kg mass is hanging from the end?
While preparing tea water in a mine shaft deep underground, you notice that water boils at 105 C. what is your depth below the surface
just when charliw wants to sit down, a 240 lb bully pushes him away with a force of 450 N. what is the force exerted by charlie brown on the bully
Two indentical spaceships are travelling in the same direction. an observer on earth measure the first to have a speed of 0.80c, what is the speed of second spaceship
The sun radiates energy at the rate 3.8*10^26W. The source of this energy is fusion, a nuclear reaction in which mass is transformed into energy. Estimate the lifetime of the sun
Oxygen (O2) has a molar mass of 32.0g/mol. What is its average translational kinetic energy at that speed
After flying for 19 min in a wind blowing 47 km/h at an angle of 17° south of east, What is the speed of the airplane relative to the air
When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, what is the speed of a particle (in km/s) on the star's equator
A 6.10 g lead bullet traveling at 310 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A 15 kg block is accelerated at 1.7 m/s2 up a frictionless plane inclined at 5.0° to the horizontal, with the speed increasing from 10 m/s to 35 m/s. What is the average rate at which energy is transferred to the block
A certain dog whistle operates at 21.6 hz while another brand X operates at an unknown frequency. estimate the operating frequency of brand X
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