The constant G that appears in the equation F = Gm1m2/r2 is

a. smaller on the Moon than on Earth.
b. the force of gravity.
c. equal to 9.8 m/s2.
d. the acceleration due to gravity.
e. equal to 6.67 × 10^-11 Nm2/kg2.


e

Physics & Space Science

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Indicate whether the statement is true or false

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Orphan planets will most likely be found using which method used for finding exoplanets?

A) Doppler B) transit C) microlensing D) astrometric

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Consider a spherical Gaussian surface of radius R centered at the origin. A charge Q is placed inside the sphere. To maximize the magnitude of the flux of the electric field through the Gaussian surface, the charge should be located

A) at x = 0, y = 0, z = R/2. B) at the origin. C) at x = R/2, y = 0, z = 0. D) at x = 0, y = R/2, z = 0. E) The charge can be located anywhere, since flux does not depend on the position of the charge as long as it is inside the sphere.

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_________is uniform removal of metal from a part to produce a smooth surface by using electrochemical techniques.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science