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An astrounaut lands on a planet that has the same mass as earth and twice the diameterhow does the astrounaut's weight differ from that on earth?
The force between two objects due to gravity is proportional to the product of the two masses. That part doesn't change compared to his weight on earth.
The force is also inversely proportional to the square of the distance between their centers. On the planet with a diameter equal to twice the earth's diameter, the distance is changed by a factor of 2, so the force is changed by a factor of (1/22) = 1/4. His weight on the alien planet is 25% of his weight on earth. Naturally we're assuming that the planet's mass is symmetrically distributed. It doesn't have to be homogeneous with constant density throughout, but it has to be evenly spread around the center. The geometric center of the sphere also has to be its center of mass, with no big off-center lumps.
What else can I help you with?
Which planet can be classified as a lesser planet?
All of the eight planets are all lesser planets but Pluto isn't a planet so it isn't a lesser planet
Why does gravity differ on didderent planets?
Gravity differs on different planets because it is determined by the mass of the planet. The larger the mass, the stronger the gravitational pull. Each planet has a unique mass and size, resulting in different levels of gravity on each planet.
Are any planets of the same size?
No two planets within our solar system have the same exact size. However, Earth and Venus are quite close - their diameters differ by only 652km.
Which planet has 1000 rings?
No known planet has 1000 rings; Saturn which has the most developed ring system may have over 30 - identified by divisions visible between bands, although most sources cite around 3 to 5 "main" rings.
Which planet is called glossy planet?
There is no planet that is called the "glossy planet".
How do the orbit of planets differ from the orbit of moons?
A planet orbits a star. A moon orbits a planet or dwarf planet.
How are planetoids differ from planet?
stanie się gówno
How does an asteroid differ from a planet?
A dwarf planet is larger, big enough to make itself into an approximately spherical shape. Asteroids are smaller and more irregular in shape.
Which planet can be classified as a lesser planet?
All of the eight planets are all lesser planets but Pluto isn't a planet so it isn't a lesser planet
How does a dwarf planet differ from an asteroid?
A dwarf planet is larger, big enough to make itself into an approximately spherical shape. Asteroids are smaller and more irregular in shape.
How many hours does each planet in the solar system take to go around the sun?
they differ because of their distances around the sun
How do prograde rotation amd retrograde rotation differ?
Retrograde motion refers to the behaviour of an outer planet while it is overtaken by the Earth, around the time of opposition. At that time the planet appears to move backwards along the ecliptic.
How would your weight differ if you went to a planet twice the diameter of earth?
It depends upon the density of the planet. Another Answer: A person's weight is their Mass multiplied by the Force of Gravity of that particular planet. Your Mass should never change unless you gradually become skinnier or the opposite. So it prominently depends on the Force of Gravity not necessarily the diameter of the planet.
Why does gravity differ on didderent planets?
Gravity differs on different planets because it is determined by the mass of the planet. The larger the mass, the stronger the gravitational pull. Each planet has a unique mass and size, resulting in different levels of gravity on each planet.
How does the composition of earth atmosphere differ from the composition of the atmosphere of the gas giant planet?
The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere
Why do planets differ in their orbital speed?
Because according to Kepler's laws the orbital speed of a planet is proportional to the square root of the reciprocal of the distance: v = d-½.
How does the moons motion in space differ from the suns?
There is only one legit sun and that sun orbits the center of the milky way whereas the moons orbit their planet.
