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With an irradiance of 0.001W/cm2 incident on a detector of area 0.5 cm 2 and with a bandwidth of 2 Hz, the ratio of the noise voltage to the signal voltage is 10. What is the noise equivalent power of the detector?
In trying to move across a slippery icy surface, a 175-lb man uses two ropes AB and AC. Knowing that the force exerted on the man by the icy surface is perpendicular to that surface, determine the tension in each rope.
A rectangular loop of wire is placed next to a straight wire, as shown in the (Figure 1) . There is a current ofI = 4.5A in both wires
The objective lens of the refracting telescope at the Lick Observatory in California has a focal length of 57 ft. What is the refractive power of this lens? What focal length (mm) eyepiece would give a magnification of 1000× for this telescope?
A beam of pions (Pi-mesons, with rest energy m(Pi)c^2=140 MeV) consisting of 10^10pions/cm^2s moves with speed such that the total energy of each pion is 10^5 MeV. What is the pressure the beam exerts on a surface that absorbs it and brings it to res..
A 10 kg cart is moving at a velocity of 5m/s hits a tricycle of mass 20kg moving at a velocity of 2m/s. If these objects get stuck to each other when they collide, what is their final velocity? What is this type of collision known as? Please show ..
A uranium nucleus (mass 238 u), initially at rest, undergoes radioactive decay. what is the recoil speed of the thorium nucleus
A 3 kg toy car with a speed of 5 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 5 m/s, how much kinetic energy is lost
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
An air bubble is expelled by an underwater diver at a depth of 17.2 m. Find the final volume of the bubble if its initial volume is 10.4 cm3
A chair of weight 130 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 43.00 N directed at the angle of 35.0 degrees below the horizontal and the chair slides along the floor. Using Newton's law..
particle a of charge 4.00 10-4 c is at the origin particle b of charge -5.00 10-4 c is at 7.00 m 0 and particle c of
A daredevil on a motorcycle leaves the end of a ramp with a speed of 39.5 m/s, what is the maximum height that he reaches
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