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Two satelities S1 and S2 revolve round a planet in coplanar circular orbits in the same sense. Their periods of revoluions are 1h and 8h respectively. The radius of the orbit of S1 is 10^4km. When S2 is closed to S1 FIND ; (i) speed of S2 relative to S1 and (ii) angular speed of S2 actually observed by an astronaut in S1?
A wheel with a radius of 20 cm rotates constantly counter-clockwise once every 5 s. What is the centripetal acceleration of the wheel rim
Two flat surfaces are exposed to a uniform, horizontal magnetic field of magnitude 0.42 T. When viewed edge-on, Determine the area of the first surface
A sealed 63 m3 tank is filled with 5000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. determine The mass density of the oxygen gas
Two long parallel wires each with a mass per unit length of 25.10 g/m are supported in a horizontal plane by 2.5 cm long strings. Each wire carries the same current, I, causing the wires to repel each other so that the angle between supporting string..
A bus is traveling up a hill at a speed of 34m/s. The hill is 23 degrees relative to horizontal and the coefficient of static friction between the bus's tires and the road is 0.6
when jim abd rob ride bicycles, jim can only accelerate at three quarters the acceleration of Rob. Both start from rest at the bottom of a long straight road with constant upward slope. If rob takes 5.7 minutes to react the top, how much earlier s..
A galvanometer with a coil resistance of 14.1 is used with a shunt resistor to make a nondigital ammeter that has an equivalent resistance of 0.755. determine the full-scale current of the galvanometer
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.53x1011 m apart. What is the mass of the smaller star
The average depth of Earth's oceans is 2.236 mi. Suppose 68% of the earth is covered in water and that the population of the earth is 6.33 billion. (a) How much water mass on the surface of earth is there per person and (b) to help visualize it, w..
Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -2.86E-6 C. Calculate the difference in mass between the charged objects
An iron rod of diameter 2.6 cm and length 80.0 cm is to be inserted inside a long solenoid to make an electromagnet. how many turns of wire will be needed for the solenoid
A 100kg hollow sphere is neutrally buoyant and completely underwater. Its volume is 0.5 cubic meter. what fraction of this volume is helium
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