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A broken spaceship is located 10 km above the center of a large circular thin sheet of unknown dust. The sheet has a radius of 106km and a density of 71011kg=m2. The spaceship and the dust attract each other due to the gravitational force. a) Discover the initial acceleration of the spaceship. b) Discover the acceleration of the spaceship right before the spaceship hits the dust. c) What will the astronauts in the spaceship experience right before the spaceship hits the dust?
Fred (mass 72 kg) is running with the football at a speed of 5.8 m/s when he is met head-on by Brutus (mass 120 kg), who is moving at 4.0 m/s. How far do they slide
A helium weather balloon is used to lift a meteorological sensor package high up into the atmosphere. Calculate the number of moles of helium in the balloon
A person travels by car from one city to another with different constant speeds between pairs of cities. Determine the average speed for the trip
How would you describe why we have different atmospheric pressure on different level (height) of earth's atmosphere in molecular level (molecular behaviour and what causes such behaviour).
A thin glass rod is bent into a semicircle of radius r=5cm. A charge of +q = 4.5 pC is uniformly distributed along the upper quadrant and -q = -4.5 pC along the lower quadrant. What is the magnitude and direction of the electric field at P, the cen..
Red light of wavelength 671.0 nm produces photoelectrons from a certain photoemissive material. What is the material's work function
neptunium has a density of 19.5 . what would be the radius of a sphere made of this material that has a critical mass?
A 232-kg satellite is in circular orbit around the Earth and moving at a speed of 4.88 km/s. How much work must be done to move the satellite into another circular orbit
A flat uniform circular disk (radius = 2.60 m, mass = 1.00 x 102 kg) is initiallystationary. Find the resulting angular speed of the disk
A nitrogen molecule is initially in a large volume of calm air at STP. How many collisions does the nitrogen molecule suffer in 10 minutes
Planets go around the sun in elliptical orbits. The extremely exaggerated diagram below shows a portion of such an orbit and the force on the planet at one position along that orbit. The planet is moving to the right. F|| and F are the components of ..
A solid, uniform sphere of mass 2.0 kilogram and radius 1.7 meter rolls without slipping down an inclined plane of height 7.4 meter. Determine the angular velocity of the sphere
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