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Question1
A space station is constructed in the shape of a wheel 20 in diameter, with essentially all of its 5.1×105 mass at the rim. Once the station is completed, it is set rotating at a rate that requires an object at the rim to have radial acceleration, thereby simulating Earth's surface gravity. This is proficient using two small rockets, each with 100 thrust which are mounted on the rim of the station.
Question2
At a factory, a noon whistle is sounding with a frequency of 486 Hz. since a car travelling at 81 km/h approaches the factory; driver hears the whistle at frequency fi. After driving past factory, the driver hears frequency ff. What is modify in frequency ff - fi heard by the driver? (Suppose a temperature of 20° C.)
Biologically usefull technetium nucleuii (at wt 99) have half life of 6 hours. A solution containing 10^-12 gram of this is injected into the bladder of a patient.
An elevator is able to raise 9,800 N to a height of 37 m in 12 s, What is the elevator's power output and How much work does the elevator do
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. suppose the manufacturer's claim of 60% efficiency.
A pair of narrow slits are .075 mm apart and are located 1.5 m from the screen. Find the wavelength of the beam
A car travels with an initial velocity of 2 meters per second, at initial position of 0 meters with an accerleration of 2 meters per second at time of 2.0 seconds
A cylinder with a hole bored completely through it is resting upright in the water. The inner radius is 1 m, The outer radius is 2 m. How long is the part of cylinder above water
An object is to the left of a thin lens. The lens forms an image on a screen that is 2.60 m to the right of the object. Is the image upright or inverted
Boat A negotiates a curve whose radius is 370 m. Boat B negotiates a curve whose radius is 120 m. Each boat experiences the similar centripetal acceleration. What is the ratio of speed of boat A to that of boat B.
Workers pushing a 180-kg trunk across a level floor encounter a 10-m long region where the floor becomes increasingly rough; the coefficient of kinetic friction enhancements.
Suppose that a person in Tilted Land throws a ball straight up at 20 m/s. Where does the ball hit the ground?
An object has a kinetic energy of 257J and a momentum of magnitude 21.8 kg·m/s. Find out the speed and the mass of the object.
A satellite has a mass of 6076 kg and is in a circular orbit 4.65 × 105 m above the surface of a planet. What would be the true weight of the satellite if it were at rest on the planet's surface
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