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A communications satellite is in synchronous orbit that is 4.0*107 m directly above the equator. The satellite is located midway among Quito, Equador and Belem, Brazil, two cities on the equator that are separated by a distance of 3.5*106 m. Find the time it takes for a telephone call to go by way of satellite among these two cities. Ignore the curvature of the earth.
a banner is suspended from a horizontal pivoted pole. the pole is 2.10 m long and weighs 170 n. the banner which weighs
A piece of copper at 320 degrees Celsius is dropped into 1.4 kg of water at 17 degrees Celsius. If the equilibrium temperature is degrees Celsius , what is the mass of the copper
A resistor of unknown resistance and a 48.0-? resistor are connected across a 128.0-V emf device in such a way that an 10.0-A current flows
question1a square plate of side a and mass m is thrown into the air so that it rotates freely under zero torque. the
q1. a rifle with the barrel length of 62cm fires a 12g bullet with a horizontal speed of 380ms. the bullet strikes a
A wheel turns with a constant angular acceleration of 0.600rad/s^2. Through how many revolutions does the wheel turn in this interval
Two billiard balls, one heading north at 15.0 m/s and a secondheading south at 10.0 m/s, collide head-on. Take the collision tobe perfectly elastic and choose the positive direction north.
A person hums into the top of a well and finds that standing waves are established at frequencies of 44.0, 132.0, and 220.0 Hz. The frequency of 44.0 Hz is not necessarily the fundamental frequency. The speed of sound is 343 m/s. How deep is the well..
A spaceship is approaching a space station at a speed of 2.0 105 m/s. find the frequency of the beacon observed on the spaceship
A ring of charge is centered at the origin in the vertical direction, Find the total electric field, E, of the ring at the point P = (2.25 m, 0.00 m)
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope. What is the increase in internal energy in the sledge and the surface due to friction
A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground. What are the speeds of the two s..
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