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An older camera has a lens with a focal length of 50 mm and uses 34-mm-wide film to record its images. Using this camera, a photographer takes a picture of the Golden Gate Bridge that completely spans the width of the film. Now he wants to take a picture of the bridge using his digital camera with its 12-mm-wide CCD detector. What focal length should this camera's lens have for the image of the bridge to cover the entire detector?
I can't even figure out what equations to use for this. I didn't know width of the detector even played a role? Can someone explain how width affects any of this?
a weightlifter curls a 35kg bar raising it each time a distance of 0.65m. how many times must he repeat this exercise
A cart loaded with bricks has a total mass of 21.2 kg and is pulled at constant speed by a rope. The rope is inclined at 27.2 ? above the horizontal and the cart moves 27.1 m on a horizontal floor. The coefficient of kinetic friction between groun..
A 117 V potential difference isapplied to a space heater that dissipates 500 W during operation. What is its resistance during operation
a crate on the floorhas an applied force 11 degrees below horizontal of 815 Newtons. what is the mass of the crate
Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires
A 1kg of ice at -30° C is added to 10 kg of steam at 500°C. What is the final phase of the system of ice + steam if no heat escaped from it
20 kg of water occupy a volume of 1 m^3 in a piston cylinder device at a pressure of 45 bars, Determine the final temperature of the water and Calculate the work and heat involved during this process
A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s^2 for 14.0 s. What is the total distance travelled
Brian is trying to pull Julie on a sled across a flat snowy field. Brian pulls on a rope attached to the sed. His pulling force is directed forward and upwards at a 30 degree angle above horizontal. Julie's mass is 50kg and the sleds mass is 8kg. If ..
when you blow up a balloon do you slightly warm the balloon? when air is allowed to rush out of it how if at all does
A glass bead charged to 3.8 nC exerts an 6.0Ã-10âˆ'4N repulsive electric force on a plastic bead 2.7 cm away
A fireman d = 40.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 36.0° above the horizontal , At what height will the stream of water strike the building
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