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A communications satellite is in a synchronous orbit that is 3.6 x107 m directly above the equator. The satellite islocated between two cities almost on the equator that are separatedby a distance of 3.5 x 106 m. Find the time it takes for a telephone call to go by way of satellite between these cities. Ignore the curvature of the earth.
A typical color television draws about 2.9 A when connected to a 150 V source. What is the efiective resistance of the T.V. set
(a)For a satellite to be in a circular orbit 660 km above the surface of the earth, what orbital speed must it be given (b)What is the period of the orbit (in hours)
A typical half life calculated from the simplest such theory, the SU(5) model, is about 10^32 years. How many protons are in all the oceans on earth
One billiard ball is shot east at 3.5 m/s. A second, identical billiard ball is shot west at 2.1 m/s. The balls have a glancing collision, not a head on collision, deflecting the second ball by 90 degrees and sending it north at 1.8 m/s.
An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 W
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
A 2.0 kg block is projected down a plane that makes an angle of 20.degree with the horizontal with an initial kinetic energy of 2.0 J. If the coefficient of kinetic friction between the block and plane is 0.40, how far will the block slide down along..
While Voyager 2 sent back pictures of Neptune during its historic flyby of that planet in 1989, the spacecraft's radio signals travelled for 4 hours at the speed of light to reach Earth. How far away was the spacecraft.
A 22.98 g ice cube at -9.45 oC is place in an aluminum cup whose initial temperature is 79.96 oC. What is the mass in grams of the cup
A rectangular plate has a length of (20.4 0.2) cm and a width of (8.7 0.1) cm. Calculate the area of the plate
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for the trip
An aluminum rod is 19.5 cm longat 20°C and has a mass of 350 g. If 10000 J of energy is added to the rod by heat, what is the change in length of the rod
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