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Discover the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person(2.0 m) from an SR-71 Blackbird airplane flying at an altitude of 29 km. (Suppose light with a wavelength of 450 mm.)
A 70 kg human body typically contains 140 g of potassium. Potassium has a chemical atomic mass of 39.1 u and has three naturally occurring isotopes.
two blocks connected by a rod going down a 30.0 degree slope, bigger mass 3.30kg is first and the smaller 1.65kg is following. calculate the common acceleration of the blocks
Two metal spheres of different sizes are charged such that the electric potential is the same at the surface of each. Sphere A has a radius 7 times that of sphere B. Let and be the charges on the two spheres, and let and be the electric-field magnitu..
Suppose 0.0330 kg of steam (at 100.00°C) is added to 0.330 kg of water (initially at 21.1°C.). Find the final temperature (in °C) of the water after equilibrium is reached
The gap between electrodes in a spark plug is 6.00 * 10^-2cm. In order to produce an electric spark in a gasoline-airmixture, the electric field must reach a value of 3.000*10^6V/m. What minimum voltage must be supplied by the ignitioncircuit when st..
You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 273 N for 7.2 s, What is the work done by friction
A sound wave with intensity 39 mW/m2 interferes constructively with a sound wave that has an intensity of 12 mW/m2. What is the intensity of the superposition of the two
A 1.0-cm-tall candle flame is 55 cm from a lens with a focal length of 22 cm. What is the image distance? What is the height of the flame's image
A peak intensity of an EM wave is 3.40x10^7 W/m^2. if the peak magnetic field is 2.87x10^-6 T, what is the peak electric field
A toy of mass 0.155 kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 305 N/m. What is the maximum speed attained by the object during its motion?
Electron A has a De Broglie wavelength (lambda). If electron B has twice the kinetic energy of electron A, the de Broglie wavelength of electron B is: A) 2lambda B) lamda * square root 2 C) lambda/ square root 2 D) lambda/ 2
At the top a giant 360 swing on the high bar, a 50 kg gymnast has a velocity of 1 m/s and he is 3.5 m about the ground, What is the gymnast's gravitational potential energy
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