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A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.55 104 m/s, and the radius of the orbit is 5.40 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.80 106 m. What is the orbital speed of the second satellite?
a student standing on a train staiton observes that the pitch (frequency) of the train decreases from 888.8 Hz to 862.8 Hz, What is the speed of the train
A Ge semiconductor has a gap of 0.7 eV between the valence and conduction band. What fraction of the electrons are in the conduction band
An electron enters a region of space containing a uniform 0.0000201-T magnetic field. Find the radius of the electrons path, and the frequency of the motion
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
At the 18th green of the U. S. Open you need to make a 20.5 ft putt to win the tournament. Assuming the deccelration caused by the grass is constant, what should the initial speed have to be to make the putt
A 1.50-m-diameter MRI solenoid with a length of 2.20m has a magnetic field of 1.60T along its axis. find the emf in one turn of the solenoid's windings
A flight attendant pulls her 69N flight bag a distance of 246m along a level airport floor at a constant velocity. The force she exerts is 37N at an angle of 58° above the horizontal. Find the coefficient of kinetic friction between flight bag and..
A cluster of galaxies has a radius of about 5.2 million light-years (4.9×10^22) and an intracluster medium with a temperature of (6.5×10^7) K. Estimate the mass of the cluster. Give the answer in both kilograms and solar masses. Suppose combined l..
A 200 mL volume of neon gas is at 1.2 atm of pressure. If it was heated from 250 K to 500 K what is the volume if the pressure is held constant
Provide your answer in m/s in scientific notation to three significant digits (i.e. 1.15*10^2)
In an experiment, 300 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 54.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum-water system
Two plates separated by a distance 18.3 mm are charged to a potential difference of 7.25 volts, Using the concept of work-energy, calculate the change in kinetic energy
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