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The resistance R in given Figure Pis adjusted until maximum power is delivered to the load consisting of R and the 12-kΩ resistor in parallel.
(a) Find the required value of R.
(b) How much power is delivered to the load?
Can you explain diffraction in term of interference? Are they different phenomena? Explain. Include a clear diagram to support your explanations. What is the diffraction limit and how does it affect optical instruments?
A 64 woman stands on a very light, rigid board that rests on the bathroom scale at each end. 1.5 m left of her and 2.0m total. what is the reading on each of the scales.
The height of a door is measured by four people and their measured values are 217.0 cm, 217.9 cm, 217.3 cm, and 217.6 cm, What is the standard deviation for the four measurements
Water is flowing in a pipe with a varying cross-sectional area, and at all points the water completely fills the pipe. What is the fluid speed at points in the pipe where the cross-sectional area is 4.90×10^?2m^2
Particles with a charge of 4e (electron) are sent through a velocity selector with crossed electric and magnetic fields of 9.5 x 104 V/m and .16 T respectively. What is the mass of the particles
In a specific heat experiment 184.0 grams of aluminum (C=913.0 J/kg.K) at 100.0°C) is mixed with 48.0 g water at 20.0°C. Find the entropy change of the aluminum
Suppose a simple pendulum consists of a small weight (called apendulum bob) suspended from a 0.52-m-long string. If thependulum bob were displaced to one side by a small angle and then released,
A hollow cubical box is 4.09 m on an edge. This box is floating in a lake with one-third of its height beneath the surface. What is the depth of the water in the box at the instant the box begins to sink
A 160 kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.170 m/s. How much work must be done on the hoopto stop it?
In order to calibrate the strength of an Fe-55 source, many measurements of the radiation field are made with the same detector located at different distances.
A gun shoots bullets that leave the muzzle with a speed of 336 m/s. If a bullet is to hit a target 136 m away at the level of the muzzle, the gun has to be aimed at a point above the target. How far above the target is this point.
german physicist werner heisenberg related the uncertainity of an objects position triangle x to the uncertainity in
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