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Kim says that she was less than 10 feet away from the president when she took a picture of him with her 52 millimeter focal length camera lens. The picture shows the upper half of the president's body (or 2.7 feet of his total height). On the negative of the film, this part of his body is 18 millimeter high. Find how close was Kim to the president when she took the picture?
consider two identical particles in a 1D infinite square well of length L. write the symmetric and anti-symmetric spatial ground state wave functions
two long parallel wires each carry a current of 5.0 a directed to the east. the two wires are separated by 8.0 cm. what
At a particular moment in kayla's skydive, her acceleration is 16 meters/sec^2. how much force of air resistance is acting on her
A coach tells his little league players that hitting a .275 batting average, within 7% percentage error, means that they had a really great season. 7-year-old Tommy ended the season hitting a .258 batting average. According to his coach, did he ha..
An electric dipole consists of 1.30g spheres charged to ± 1.70 nC at the ends of a 15.0cm -long mass less rod. The dipole rotates on a frictionless pivot at its center. The dipole is held perpendicular to a uniform electric field by field strength 96..
The pickup coil in an electric guitar contains 10,000 turnsand has a diameter of 2.1 mm. When thepickup coil is very close to a guitar string, there is a field ofmagnitude B = 0.09 T in thecoil. If this steel string is vibrating at a frequency of2..
If, as is typical, each of them breathes about 500 {rm{ cm}}^3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year.
Determine the thermal energy dissipated from brakes in a 1600 kilogram vehicle that descends a 20 degree hill
A 65 kg skateboarder comes over the top of a hill at 5.0 m/s and reaches 10 m/s at the bottom. Find the total work done on the skateboarder
a positive point charge q1 2.15 times 10-5 c is fixed at the origin of coordinates and a negative point charge q2
A particle attached to a spring with k 50 N/m is undergoing simple harmonic motion, and its position is described by the equation x (5.7 m)cos(7.5t), What is the maximum potential energy
Refraction is caused by the fact that
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