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Hand-held cameras (even fancy photographer's cameras), rarely use film any more, but the physics is nearly the same as an old fashioned camera: there is a lens, and a plane onto which the image focuses. (In the old days, the plane was where the film went, now there will likely be a solid state CCD array there. But we still call this the "film plane".) Suppose a 60.0mm focal length lens is used to focus an image onto the film plane. The maximum distance available in this (large!) camera between the lens and the film plane is 105mm. How far ahead of the film plane should the lens be, if the object to be photographed is 1.2m away?
A 100-watt light bulb is brighter than a 25-watt light bulb because it uses more power. Which bulb has a greater resistance, the 100-watt or the 25-watt light bulb
Discuss the relative merits of using the Biot-Savart law and Ampere's law to calculate the magnetic field around the wire. In this case, is it necessary to include the Maxwell correction to Ampere's law?
A particle leaves the origin with an initial velocity, v= (3.00i+1.00j) m/s, and experiences a constant acceleration, a=(-1.00 - 3.00j) m/s2. At what time since leaving the origin did it reach this maximum x-position
When electrons are moving from right to left in a conducting wire, the electric field is directed to ward the right. Electric current is a vector quantity.
one mole of oxygen gas is at a pressure of 6.70 atm and a temperature of 24.0degc.a if the gas is heated at constant
A 1.09-µF capacitor is charged by a 31.0-V power supply. The fully charged capacitor is then discharged through a 9.8-mH inductor. Find the maximum current in the resulting oscillations.
Just after each jumps, that person is moving away from the crate with a speed of 4.40 m/s relative to the crate.
A 1000N force inclined at 40 degrees with the horizontal is applied to move a block mass 150kg. compute the normal force acting on block
A ramp is 25 meters long and is inclined at 30 degrees with the horizontal. A block of mass 25 is pulled up at a constant acceleration of 1 m/s2. The coefficient of kinetic friction is 0.15. If the box starts at rest from the bottom, what would be..
The terminals of a 12-V battery are connected to parallel plates. What plate separation would produce an electric field between the plates of 1400 N/C
In the standing broad jump, one squats and then pushes off with the legs to see how far one can jump, Determine how far can they jump in meters? Suppose the person leaves at an angle of 45 degree and on level ground
a 10 kg box is pushed along a frictionless horizontal surface by a horizontal force of 50n. if the box starts from rest
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