Imagine for a minute that the Moon is held in its orbit about the Earth by electrical forces rather than by gravitation. What electrical charges ?Q on the Earth and +Q on the Moon are necessary to hold the Moon in a circular orbit with a period of 27.3 days? The Earth-Moon distance is 384 000 km and the mass of the Moon is 7.35 × 10^22 kg
Q = 5.73 × 10^13 C
Physics & Space Science
You might also like to view...
Using Jupiter's axial tilt, explain why its rings are harder to observe from Earth than even the dark rings of Uranus
What will be an ideal response?
Physics & Space Science
Company X increases its profits every year by 1% million. Its growth in profits is
A) Exponential. B) Quadratic. C) Parabolic. D) Linear.
Physics & Space Science
Gamma rays are emitted
A) often after beta decay. B) often after alpha decay. C) often from metastable states. D) in all of the above. E) in none of the above.
Physics & Space Science
In the formula E=mc2, what does E represent?
A) the mass-energy, or potential energy stored in an object's mass B) the kinetic energy of a moving object C) the radiative energy carried by light D) the gravitational potential energy of an object held above the ground
Physics & Space Science