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A rotating cylinder about 23 km in length and9.0 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on itwill experience the same acceleration due to gravity on Earth?
What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20?C? Find the ratio of the kinematic viscosity of air to that of water for the same condition?
The Earth can be approximated as a sphere of uniform density, rotating on its axis once a day. The mass of the Earth is 5.97×1024 kg, the radius of the Earth is 6.38×106 m, and the time of rotation for the Earth is 24.0 hrs.
A thin layer of magnesium fluoride (n = 1.38) is used to coat a flint-glass lens (n = 1.61). What atleast thickness should the magnesium fluoride film have if the reflection of 669 nm light is to be suppressed? suppose that the light is incident a..
A proton is passing the origin. The magnetic field at the (x,y,z) position ( 2mm , 0 mm, 0 mm) is1.4×10?13?^T. What is the speed of the proton
A magnetic field of 2.00T is applied to a bubble chamber to make the tracts of protons, what is the momentum of the proton
A car battery stores about 3.00 MJ of energy. If all this energy were used to generate a uniform electric field of 27.0 kV/m, what volume would it occupy.
One morning in New York City at 9:AM, Larry looks south and sees the moon is due south. Suppose Curly were to look at the Earth again 7 days later. What would the apparent shape of the Earth be
A sky-diver jumps out of a plane and achives (terminal velocity) before opening his parachute. Explain what is meant by the term terminal velocity, why it occurs and what value of velocity a typical sky diver might experience. Include references t..
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 54 dB by an observer 10 km away. Treat the horn as a point source and neglect any absorption of sound by the air. What is the average power generated..
What is the main possible displacement of the shopper
When people exercise they shed heat to the environment by sweating and radiating. calculate the rise in body temperature after 1 hour
Imagine there has been a drastic rise in food-borne illness in the city in which you live. The public lacks the knowledge about proper food safety to stop these problems and they also do not know how to find precise nutritional information to educ..
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