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Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. These are called geosynchronous orbits. The radius of the earth is 6.37 \times 10^6 {\rm{ m}}, and the altitude of a geosynchronous orbit is 3.58 \times 10^7 {\rm{ m}}( \approx 22000 miles). What is the speed of a satellite in geosynchronous orbit and what is the magnitude of the acceleration of the satellite?
A 4.40-g lead bullet at 32.0°C is fired at a speed of 230 m/s into a large block of ice at 0°C, What quantity of ice melts
The mass of a copper atom is 3.57*10^-25 kg, and the density of copper is 8920 kg/m^3. Determine the volume of each cube
a 1.00 x 10^4 kg railroad car is rolling at 6 meters per sec. What is the cars speed just after gravel is loaded
A 124-? resistor and a 163-? resistor are both connected in parallel across a power supply. If the potential drop across the 124-? resistor is 12 V, what is the exact potential drop (in volts) across resistorv 3
What is work done by the non-conservative force
How long does it take an automobile travelling 56.50 km/h to become even with a car that is travelling in another lane at 36.50 km/h if the cars' front bumpers are initially 148m apart.
Two skaters with masses of 66kg and 51kg , respectively, stand 7.5m apart, each holding one end of a piece of rope. how far does each skater travel
An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v=5.5m/s in the positive x direction. Write an expression for the normal force, F_n, that the ice pushes against both skates together
Two particles, with charges of q1 = 60.0nC and q2 = 60.0nC, are placed at the points with coordinates (0, 12.00 cm) and (0, 12.00 cm). A particle with charge q3 = 30.0 nC is located at the origin.(a) Find the electric potential energy of the confi..
An electron remains in an excited state of an atom for typically 10-8 s. What is the minimum uncertainty in the energy of the state
She only uses the most accelerated depreciation method possible. The computer is the only personal property which she places in service during the year. Illustrate what is her total depreciation deduction for 2011?"
24.0g of copper pellets are removed from a 300 ? C oven and immediately dropped into 120mL of water at 24.0 ? C in an insulated cup. What will the new water temperature be
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