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Solve the given question:
Kim says that she was less than 10 ft away from the president when she took a picture of him with her 43-mm focal length camera lens. The picture shows the upper half of the president's body (or 3.3 ft of his total height). On the negative of the film, this part of his body is 18 mm high. How close was Kim to the president when she took the picture?
(In ft)
Show all work, use additional paper if necessary.
a current of 0.77 a flows through a copper wire 0.47 mm in diameter when it is connected to a potential difference of
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A 350 gram stone is swung in a circular path, on a 60 centimeter length of string and in a vertical plane. Find the tension in the string at the top of the circle
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A crate of mass 10.0 kg is pulled up arough incline with an initial speed of 1.50 m/s. The pulling forceis 100 N parallel to the incline, which makes an angle of16.0° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate..
you want to get an idea of the magnitude of magnetic fields produced by overhead power lines. you estimate that a
A concave mirror's has a radius of curvature of 33.2 centimeter, Determine what is its focal length
A speedboat starts from rest and accelerates at+1.91 m/s2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of+0.518 m/s2.
A 2300 kg truck traveling north at 39 km/h turns east and accelerates to 57 km/h. What is the change in the truck's kinetic energy
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