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The intensity in normal conversation, when about50 cm from the speaker, is about 3×10?6W/m2. Assume the sound spreads roughly uniformly over a sphere centered on the mouth. Estimate the power output of sound from a person speaking in normal conversation.
If a 2.00{rm kg} mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?
A dielectric-filled parallel-plate capacitor has plate area A = 10.0cm2 , plate separation d = 5.00mmand dielectric constant k = 5.00. Find the energy U1 of the dielectric-filled capacitor
This situation is like that of a car on a curve that is banked at an angle of 21.50°. If she tries to make the turn without slowing down, what is the minimum distance from the seawall that she can begin making her turn and still keep away from a c..
how much work is required to accelerate a proton from rest up to a speed of 0.957c, what would be the momentum of this proton
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
A horizontal beam of electrons initially moving at 4.1 107 m/s is deflected vertically by the vertical electric field between oppositely charged parallel plates.
A 91 g arrow is fired from a bow whose string exerts an average force of 115 N on the arrow over a distance of 78 cm. Illustrate what is the speed of the arrow as it leaves the bow?
a river with a water temperature T(L)=20 degree C is to be used as the low temperature reservoir of a large power plant, what is the largest electrical output that the plant can deliver to its customers
A 2.30-?F capacitor is fully charged by being connected to a 6.0-V battery, Calculate the maximum current in the inductor, Calculate the frequency of oscillation of the LC circuit
Two charge distributions, Q1=1.4X10^-10C and Q2=3.5X10^-10, WHat is the force between them and the electric field between them?
Differentiate between the following three types of plain carbon steels.
Three capacitors are connected in series. The equivalent capacitance of this combination is 2.60, What is the third capacitance (in F)
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