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A satellite circles the earth in an orbit whose radius is 3.26 times the earth's radius. The earth's mass is 5.98 x 1024 kg, and its radius is 6.38 x 106 m. What is the period of the satellite?
What is potential barrier for the molecule aggregation? Will the solution be stable at these conditions? Will it be stable at 100 mmol/L salt concentration?
A singly charged ion of unknown mass moves in a circle of radius 14cm in a magnetic field of 8.2 T. The ion was accelerated through a potential difference of 9kV before it entered the magnetic field.What is the mass of the ion.
assume a planet had a density that varied with radius according to the equation, ρ =A/r, where A is some constant. Determine a formula that gives the central pressure for this kind of planet.
A sprinter explodes out of the starting block with an acceleration of +3.9 m/s2, What is her velocity at the end of the race
The Barringer meteor crater in northern Arizona is 180 m deep and 1.2 km in diameter. what was the meteor's speed at impact
Speedboat A negotiates a curve whose radius is 150m. Speedboat B negotiates the curve whose radius is 190m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
Consider a balloon being filled up with oxygen. You have approximately 30 moles of oxygen gas in this balloon with volume 1.3m3, what is the temperature of the molecules
On a summer day, the air conditioning breaks down and the air in your classroom becomes very warm and muggy with a vapour pressure of 20 hPa and a temperature of 25o C.
Two very thick equally-magnetized square plates of side 0.23m and of mass 20 g, are hung by threads 20.0 cm long from a common point. Calculate the magnetic field energy stored between the two plates
The drive shaft AB of an automobile is to be designed as a thin-walled tube. The engine delivers 125 kW when the shaft is turning at 1500 rev/min. Determine the minimum thickness of the shaft's wall
The wheels of an automobile are locked as it slides to a stop from an initial speed of 30.0 m/s, approximately how long does it take the car to stop
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