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A piece of audio equipment is said to have a signal-to-noise ratio of 52 dB. Obtain the ratio of intensities of the signal and the background noise?
A highway is to be built between two towns, one of which lies 50.0 km south and 80.0 km west of the other. at what angle would this highway be directed
Two particles execute simple harmonic motion of the sameamplitude and frequency along the same straight line. What is the phase difference between them
It is currently popular for automobiles to use 10% ethanol / 90%gasoline mixtures (‘gasohol’) as fuel. According topopular consensus the main benefit of gasohol use is that it“reduces our dependence upon foreign oil.” Determine the ‘break-even’ fu..
Accomplished silver workers in India can pound silver intoincredibly thin sheets, as thin as 3.00*10-7 m. Find the area of such a sheet that can be formed from 1.00 kg ofsilver
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 159-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
A plane flies 338 km at an angle of 22.3 degrees north of east. find the displacement the plane must now take to reach the airport
A 20 g bullet traveling at 300 m/s is shot into a 4.0 kg block at rest on a frictionless horizontal surface. What is the speed of the block right after shooting
With each cycle, a 2510-W engine extracts 2070 J from a thermal reservoir at 90 °C and expels 1340 J into a thermal reservoir at 20 °C. What is the work done for each cycle? What is the engine's efficiency?
An iron anchor of density 7870 kg/m^3 appears 200 N lighter in water than in air. What is the volume of the anchor
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
light of intensity i0 and polarized parallel to the transmission axis of a polarizer is incident on an analyzer. if
Two identical charges of 6.0uC are located along the y-axis at +6.4 cm and -6.4 cm respectively. Calculate the net electric field strength at a point P located at 17.6 cm along the x-axis.In addition, what force would be experienced by a 4.5uC charge..
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