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A 1590 kg satellite orbits the Earth at an altitude of 50.4 km. It is desired to increase the altitude of the orbit to 298 km.
How much energy must be added to the system to effect this change in alti- tude? The universal gravitational constant is 6.67259 × 10?11 N · m2/kg2 ,, the radius of the Earth is 6.37×106 m, and its mass is 5.98×1024 kg.
A 29? and a 41? resistor are in series, Find the current when this series combination is connected across a 12V battery
In the troposphere, the part of the atmosphere that extends from the surface to an altitude of about 11 km, calculate the pressure p at height y=8863m
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
What is the net force exerted on the skier, assuming his acceleration is constant.
Explain how does that compare with the heat needed to reaise the temp of the same mass of water through the same temp difference?
A thin rod consists of two parts joined together. One-fourth of it is silver and three-fourths is gold. The temperature decreases by 21 C°.
The flywheel of an engine has a moment of inertia 2.50 about its rotation axis. What constant torque is required to bring it up to the angular speed of 390 in a time of 8.50, starting from rest? What is its last kinetic energy . Discover an angular..
A uniform metal rod, with a mass of 3 {rm kg} and a length of 1.2 {rm m}, is attached to a wall by the hinge at its base. A horizontal wire bolted to the wall 0.51 m above the base of the rod holds the rod at an angle of 25{rm ^circ} above the hor..
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
What is the greatest amount through which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass.
A chair of weight 70 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 37.0 directed at the angle of 42 below the horizontal and the chair slides along the floor.
Explain why heat can only be transferred from a hot object to a cold object and not the other way around.
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