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what are the differences among meteorites asteroids and comets what roles did each play in the formation of the
1which of the following can be considered a definition of theoryaa theory can be an explanation of scientific lawsba
on another planet jim throws a ball directly up into the air the velocity of this ball is a linear function of t he
1a space vehicle returning to earth is fist slowed by its motors to a speed of 450ms and then is slowed further to
assume a spherical uniform planet with mass m and a radius ra develop a relationship which will the give the gravity
1in the picture two spheres of mass m and a third sphere of mass m form an equilateral triangle and a fourth sphere of
a how can a spectrogrph be used to indicate that the rings of saturn are not solidb astronomers in the 1940s had
the mass of uranus is 9x10 to the 25th kg its mean distance from the earth is about 3x10 to the 12th meters estimate
the weight of a object is the same on two different planets the mass of planet a is only sixty percent that of planet b
new york city is traveling around at a tangential speed of about 353 ms ie 790 mih as the earth spins assuming the
during the planning stages for the pioneer 11 mission when relatively little was known about saturns rings it was
is it possible to calculate the masses of the stars in an x-ray binary system when all i know of the system is that one
a planet is rotating around a star if the angular velocity of the planet at the near end is 3 rads find the angular
1 explain what causes a lunar eclipse explain what causes a solar eclipse include a diagram why dont eclipses occur
1 which is hotter mercury or venus why2 explain why there are two general families of planets rocky terrestrial and
a explain how the age of rocks can be determined by radioactivity give an exampleb how can scientists determine the
1a calculate the mass of the earth given the acceleration of gravity at the north pole is 9830 ms2 and the radius of
in the figure the blue planet has a period of 1 year and an average distance from the sun of 16 x 1011 meters if the
if d 308 x 1011 meters and d 108 x 1011 meters and the green planet sweeps an area of 1 x 1014 m2 in a given short
mark the following statements true or false1b a conservative force can do no work on an object2a potential energy is
1 suppose my car engine has a displacement of 350 cubic inches i wish to compare this with a european car which has a
1 a 8754-kg satellite is orbiting planet y at an altitude of 169x106 meters above its surface and with an orbital
planet x rotates in the same manner as the earth around an azis through its north and south poles and is perfectly
why is your weight less at the top of a high mountain or at the equator where there is a slight bulge in the earth are
a planet has a radius of 269 x 107 m and a mass of 306 x 1025 kg it orbits its sun at 115 x 1011 m assume a circular