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Problem: During a lunar eclipse, a picture of the moon (which has a diameter of 3.48 x 106 m and is 3.86 x 108 m from the earth) is taken with a camera whose lens has a focal length of 285 mm.
Part A. What is the diameter of the image on the film?
Part B. What percent is this of the width of a 24mm × 36mm color slide?
Show me the all steps of the solution.
A portable x-ray unit has a step-up transsformer, the 120 V input of which is transformed to the 100kV output needed by the x-ray tubr, what is the number of loops in the secondary
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Chromium is produced by reacting with its oxide with aluminium. If 304 g of Cr2O3 and 108 g of Al completely react to form 204 g of Al2O3 how many grams of Cr are formed.
A spherical balloon is made from a material whose mass is 3.86 kg. The thickness of the material is negligible compared to the 2.16-m radius of the balloon. Find the absolute pressure of the helium gas
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Each of the protons in a particle beam has a kinetic energy of 3.05 x 10-15 Joule. Find what are the magnitude and direction of electric field that will stop these protons in a distance of 1.40 meter
to measure the acceleration due to gravity on a distant planet an astronaut hangs a 0.055-kg ball from the end of a
The escape speed of a particular planet with a radius of 7.900e+6 m is 14,500 m/s. What is the mass of the planet
A uniform ladder 10 m long and weighing 50 N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle by the ground, find the coefficient of static friction among the ladder and the ground.
Air is trapped above liquid ethyl alcohol in a rigid container. If the air pressure above the liquid is 1.10 atm, determine the pressure in the bulb inside a bubble 4.0 m below the surface of the ethanol.
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