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To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. As the satellite passes through A, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. The booster is again fired at B to insert the satellite into a geosynchronous orbit. Knowing that the second firing increases the speed of the satellite by 4810ft/s, determine:
(a.) the speed of the satellite as it approaches B on the elliptic transfer orbit,
(b.) the increase in speed resulting from the first firing at A.
A spark plug in a car has electrodes separated by a gap of 6.5×10?2in. What potential difference must be applied to the spark plug to initiate a spark
The sun is 150,000,000 km away. The mass of the sun is 2x1030 kg, the mass of the earth is 6x1024 kg. What is the torque of the earth on the sun
Light of wavelength 6.00 102 nm passes through a slit of width 0.210 mm. (a) Find the width of the central maximum on a screen located 1.40 m from the slit. ______ mm (b) Determine the width of the first-order bright fringe.______ mm
A 211-? and a 221-? resistor are connected in series across an unspecified power supply, what is the exact current (in A) through the 221-? resistor
A stone has a mass of 9.00 x 10 ^-3 kg and is wedged into the tread of an automobile tire. The coefficient of static friction between the stone and each side of the tread channel is 0.70. determine the radius r of the tire
A uniformly charged thin ring has radius 14.5cm and total charge 20.0nC, Find the speed of the electron when it reaches the center of the ring
In reaching her destination, a backpackerwalks with an average velocoity of 1.34 m/s. How far east did she walk
A rotating cylinder about 18km in length and 6km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that residents on it will experience the same acceleration because of gravity on Earth.
a 14.0kg bucket is lowered vertically by a rope in which there is 169 n of tension at a given instant. what is the
An object is placed L = 7.20 cm to the left of a converging lens of focal length 3.00 cm. What is the magnification due to the mirror
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. The left end is put on the tailgate of the truck. However the tailgate is tilted a bit, so it only contacts the boar..
A two-slit pattern is viewed on a screen 1.08 m from the slits. what is the total width of the central bright fringe
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