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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?
Three point charges, -6.05 10-9 C, -9.75 10-9 C, and +7.50 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
A rope can withstand 1.0 x 10^3 N of tension. If the rope is being used to pull a 10.0-kg package across a c=frictionless surface, what is the greatest acceleration that will not break the rope
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail and the nail deflects downward by 2.00 x 10^-5. what is the diameter of the nail
A 100 kg rocket moving radially outward from Earth has a speed of 4 km/s as its engine shuts off 200 km above Earth's surface.
Two flat surfaces are exposed to a uniform, horizontal magnetic field of magnitude 0.52 T. Calculate the area of the first surface
An oceanliner is heading due north with a speed of 8.5 m/srelative to the water. Determine the directional angle relative to due north
An electron is to be accelerated from a velocity of 1.00×106m/s to a velocity of 7.00×106 m/s. Through what potential difference must the electron pass
a harmonic sound of wavelength 40cm is resonating in the first overtone of an organ pipe which is closed at one end and open at the other. what is the length of the pipe
Two positive point charges, each 17?C , lie along the x-axis at x = -0.12m and x = +0.12m . Find the electric field at the point (0, 0.21m)
A house painter stands 3 m above the ground on a 4.9-m-long ladder that leans against the wall at a point 4.7 m above the ground. find the force of friction that the driveway exerts on the bottom of the ladder
A soccer player kicks a rock horizontally off a 34.0-m-high cliff into a pool of water. what was the initial speed given to the rock
An experiment that can be utilized to measure the velocity of a bullet is to have two cardboard disks attached to a rotating shaft some distance apart and to gauge the angular separation of the holes made by the bullet.
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