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Field Theory
Calculate the force of attraction between two small objects of mass 5kg and 8kg respectively which are 10cm apart. (G = 6.7 x 10^(-11) Nm^2kg^-2. Comment on the value of your answer.
Field Theory
A satellite of mass 200kg is placed into Earth orbit at a height of 200km above the surface.
(a) Assuming a circular orbit, how long does the satellite take to complete one orbit?
(b) What's the satellite's speed?
(a) Assuming a circular orbit, how long does the satellite take to complete one orbit?
(b) What's the satellite's speed?
Field Theory
A 1000kg satellite orbits the Earth at a constant altitude of 100km.
(a) How much energy must be added to the system to move the satellite into a circular orbit with altitude 200km?
(a) How much energy must be added to the system to move the satellite into a circular orbit with altitude 200km?
Field Theory
How much energy is reqyired to move a 1000kg object from the Earth's surface to an altitude twice the Earth's radius?
Field Theory
A satellite in Earth orbit has a mass of 100kg and is at an altitude of 2.00 x 10^6 m.
(a) What is the potential energy of the satellite-Earth system? (b) What is the magnitude of the gravitational force exerted by the earth on the satellite?
(a) What is the potential energy of the satellite-Earth system? (b) What is the magnitude of the gravitational force exerted by the earth on the satellite?
Field Theory
How much kinetic energy must a 100 kg spacecraft have at the surface of the earth to the earth to be able to leave the earth completely?
Explain what will happen if the space craft had (i) Less energy (ii) More energy
Explain what will happen if the space craft had (i) Less energy (ii) More energy
Field Theory
Explain in what ways the Coulomb force between two charged particles is (i) different (ii) similar, to the gravitational force between two masses.
Field Theory
A communication satellite is placed in an orbit above the equator in such a way that it remains stationary above a given point on the earth below. How much high above the surface of the earth is such a synchronous orbit? (Re = 6400Km)
Field Theory
A communication satellite is placed in an orbit above the equator in such a way that it remains stationary above a given point on the earth below. What is a geosynchronous orbit and state another name for it?
Field Theory
The free fall acceleration on the surface of the moon is about one-sixth that on the surface of the Earth. The radius of the moon is about 0.250Re where Re = 6.37 x 10^6 m. Find the ratio of their average densities, pMoon/pEarth.
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#339914 on Dec 2023
#339914 on Dec 2023